./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de52.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/loops-crafted-1/in-de52.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9b751a069fbdcae3e94881bf50bfce280447c39410a7e3e609a38e97e353596d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:21:21,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:21:21,155 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:21:21,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:21:21,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:21:21,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:21:21,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:21:21,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:21:21,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:21:21,185 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:21:21,185 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:21:21,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:21:21,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:21:21,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:21:21,187 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:21:21,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:21:21,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:21:21,188 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:21:21,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:21:21,188 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:21:21,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:21:21,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:21:21,192 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:21:21,192 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:21:21,192 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:21:21,192 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:21:21,193 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:21:21,193 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:21:21,193 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:21:21,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:21:21,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:21:21,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:21:21,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:21:21,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:21:21,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:21:21,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:21:21,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:21:21,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:21:21,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:21:21,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:21:21,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:21:21,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:21:21,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b751a069fbdcae3e94881bf50bfce280447c39410a7e3e609a38e97e353596d [2024-11-09 22:21:21,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:21:21,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:21:21,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:21:21,441 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:21:21,441 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:21:21,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/in-de52.c [2024-11-09 22:21:22,845 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:21:23,020 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:21:23,021 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de52.c [2024-11-09 22:21:23,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8a7f5b7d/cef3dec3926445de898683497e7dfc99/FLAG01dec292b [2024-11-09 22:21:23,418 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8a7f5b7d/cef3dec3926445de898683497e7dfc99 [2024-11-09 22:21:23,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:21:23,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:21:23,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:21:23,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:21:23,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:21:23,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ddedd75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23, skipping insertion in model container [2024-11-09 22:21:23,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,445 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:21:23,620 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/loops-crafted-1/in-de52.c[368,381] [2024-11-09 22:21:23,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:21:23,648 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:21:23,664 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/loops-crafted-1/in-de52.c[368,381] [2024-11-09 22:21:23,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:21:23,684 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:21:23,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23 WrapperNode [2024-11-09 22:21:23,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:21:23,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:21:23,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:21:23,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:21:23,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,703 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,718 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2024-11-09 22:21:23,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:21:23,719 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:21:23,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:21:23,719 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:21:23,727 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,729 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,739 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 22:21:23,739 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,745 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:21:23,758 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:21:23,758 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:21:23,758 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:21:23,759 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (1/1) ... [2024-11-09 22:21:23,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:21:23,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:23,791 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) [2024-11-09 22:21:23,793 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 [2024-11-09 22:21:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:21:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:21:23,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:21:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:21:23,895 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:21:23,899 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:21:24,069 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-09 22:21:24,069 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:21:24,084 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:21:24,085 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:21:24,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:21:24 BoogieIcfgContainer [2024-11-09 22:21:24,085 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:21:24,087 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:21:24,087 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:21:24,090 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:21:24,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:21:23" (1/3) ... [2024-11-09 22:21:24,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74dfef66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:21:24, skipping insertion in model container [2024-11-09 22:21:24,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:21:23" (2/3) ... [2024-11-09 22:21:24,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74dfef66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:21:24, skipping insertion in model container [2024-11-09 22:21:24,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:21:24" (3/3) ... [2024-11-09 22:21:24,092 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de52.c [2024-11-09 22:21:24,104 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:21:24,104 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:21:24,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:21:24,154 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;@c58736e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:21:24,155 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:21:24,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 22:21:24,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:24,168 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:24,169 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:24,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:24,175 INFO L85 PathProgramCache]: Analyzing trace with hash -947610293, now seen corresponding path program 1 times [2024-11-09 22:21:24,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:24,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079439402] [2024-11-09 22:21:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:24,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:21:24,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:24,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079439402] [2024-11-09 22:21:24,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079439402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:21:24,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:21:24,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:21:24,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274333566] [2024-11-09 22:21:24,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:21:24,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:21:24,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:24,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:21:24,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:21:24,341 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:24,351 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2024-11-09 22:21:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:21:24,354 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 22:21:24,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:24,359 INFO L225 Difference]: With dead ends: 41 [2024-11-09 22:21:24,359 INFO L226 Difference]: Without dead ends: 18 [2024-11-09 22:21:24,376 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 [2024-11-09 22:21:24,382 INFO L432 NwaCegarLoop]: 26 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, 26 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 [2024-11-09 22:21:24,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:21:24,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-09 22:21:24,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-09 22:21:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-09 22:21:24,430 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2024-11-09 22:21:24,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:24,431 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-09 22:21:24,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,431 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-09 22:21:24,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 22:21:24,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:24,432 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:24,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:21:24,432 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:24,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:24,433 INFO L85 PathProgramCache]: Analyzing trace with hash 286596535, now seen corresponding path program 1 times [2024-11-09 22:21:24,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:24,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602626593] [2024-11-09 22:21:24,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:24,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:21:24,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:24,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602626593] [2024-11-09 22:21:24,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602626593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:21:24,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:21:24,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 22:21:24,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221571428] [2024-11-09 22:21:24,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:21:24,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:21:24,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:24,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:21:24,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:21:24,698 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:24,746 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2024-11-09 22:21:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:21:24,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-09 22:21:24,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:24,748 INFO L225 Difference]: With dead ends: 42 [2024-11-09 22:21:24,748 INFO L226 Difference]: Without dead ends: 29 [2024-11-09 22:21:24,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:21:24,749 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:24,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 45 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:21:24,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-09 22:21:24,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-09 22:21:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-09 22:21:24,766 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 17 [2024-11-09 22:21:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:24,767 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-09 22:21:24,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,767 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-09 22:21:24,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:21:24,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:24,769 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:24,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:21:24,769 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:24,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:24,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1831665386, now seen corresponding path program 1 times [2024-11-09 22:21:24,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:24,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643943691] [2024-11-09 22:21:24,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:24,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:21:24,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:24,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643943691] [2024-11-09 22:21:24,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643943691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:21:24,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:21:24,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 22:21:24,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764983053] [2024-11-09 22:21:24,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:21:24,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 22:21:24,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:24,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 22:21:24,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 22:21:24,844 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:24,862 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-11-09 22:21:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 22:21:24,863 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 22:21:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:24,864 INFO L225 Difference]: With dead ends: 46 [2024-11-09 22:21:24,864 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 22:21:24,864 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 [2024-11-09 22:21:24,865 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:24,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:21:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 22:21:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 22:21:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2024-11-09 22:21:24,873 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 19 [2024-11-09 22:21:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:24,874 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2024-11-09 22:21:24,874 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,874 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2024-11-09 22:21:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:21:24,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:24,875 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:24,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 22:21:24,875 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:24,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash -29632170, now seen corresponding path program 1 times [2024-11-09 22:21:24,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:24,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464969474] [2024-11-09 22:21:24,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:24,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:21:24,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:24,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464969474] [2024-11-09 22:21:24,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464969474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:21:24,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:21:24,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 22:21:24,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371543987] [2024-11-09 22:21:24,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:21:24,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 22:21:24,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 22:21:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 22:21:24,949 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:24,970 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2024-11-09 22:21:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 22:21:24,971 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 22:21:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:24,972 INFO L225 Difference]: With dead ends: 64 [2024-11-09 22:21:24,973 INFO L226 Difference]: Without dead ends: 47 [2024-11-09 22:21:24,974 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 [2024-11-09 22:21:24,975 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:24,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:21:24,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-09 22:21:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-09 22:21:24,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2024-11-09 22:21:24,995 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 19 [2024-11-09 22:21:24,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:24,996 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2024-11-09 22:21:24,996 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:24,996 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2024-11-09 22:21:24,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 22:21:24,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:24,999 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:24,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 22:21:24,999 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:24,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:25,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1415219637, now seen corresponding path program 1 times [2024-11-09 22:21:25,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:25,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085314754] [2024-11-09 22:21:25,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:25,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:21:25,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:25,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085314754] [2024-11-09 22:21:25,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085314754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:21:25,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:21:25,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 22:21:25,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078393003] [2024-11-09 22:21:25,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:21:25,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:21:25,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:21:25,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:21:25,112 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:25,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:25,166 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2024-11-09 22:21:25,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:21:25,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 22:21:25,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:25,168 INFO L225 Difference]: With dead ends: 58 [2024-11-09 22:21:25,169 INFO L226 Difference]: Without dead ends: 40 [2024-11-09 22:21:25,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:21:25,170 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:25,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 48 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:21:25,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-09 22:21:25,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-09 22:21:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2024-11-09 22:21:25,181 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 21 [2024-11-09 22:21:25,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:25,181 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2024-11-09 22:21:25,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:25,181 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2024-11-09 22:21:25,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 22:21:25,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:25,186 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:25,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 22:21:25,187 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:25,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:25,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1969968726, now seen corresponding path program 1 times [2024-11-09 22:21:25,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:25,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472666635] [2024-11-09 22:21:25,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:25,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:21:25,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:25,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472666635] [2024-11-09 22:21:25,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472666635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:25,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975645793] [2024-11-09 22:21:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:25,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:25,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:25,317 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) [2024-11-09 22:21:25,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:21:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:25,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 22:21:25,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:21:25,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:21:25,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975645793] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:25,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:21:25,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2024-11-09 22:21:25,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272259922] [2024-11-09 22:21:25,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:21:25,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:21:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:25,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:21:25,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:21:25,525 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:25,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:25,561 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2024-11-09 22:21:25,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:21:25,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 22:21:25,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:25,563 INFO L225 Difference]: With dead ends: 45 [2024-11-09 22:21:25,566 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 22:21:25,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:21:25,567 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:25,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:21:25,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 22:21:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-09 22:21:25,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-11-09 22:21:25,575 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 23 [2024-11-09 22:21:25,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:25,575 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-11-09 22:21:25,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:25,576 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-09 22:21:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 22:21:25,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:25,579 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:25,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 22:21:25,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 22:21:25,780 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:25,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1359795670, now seen corresponding path program 1 times [2024-11-09 22:21:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:25,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258253336] [2024-11-09 22:21:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:25,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:21:25,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:25,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258253336] [2024-11-09 22:21:25,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258253336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:25,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233734216] [2024-11-09 22:21:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:25,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:25,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:25,892 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) [2024-11-09 22:21:25,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:21:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:25,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 22:21:25,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:21:25,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:21:26,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233734216] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:26,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:21:26,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-11-09 22:21:26,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120077697] [2024-11-09 22:21:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:21:26,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:21:26,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:21:26,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:21:26,027 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:26,056 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-11-09 22:21:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:21:26,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 22:21:26,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:26,057 INFO L225 Difference]: With dead ends: 43 [2024-11-09 22:21:26,059 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 22:21:26,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:21:26,060 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:26,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:21:26,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 22:21:26,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-09 22:21:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-09 22:21:26,067 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 23 [2024-11-09 22:21:26,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:26,067 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-09 22:21:26,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:26,068 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-09 22:21:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 22:21:26,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:26,069 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:26,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:21:26,273 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,SelfDestructingSolverStorable6 [2024-11-09 22:21:26,274 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:26,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:26,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1723840971, now seen corresponding path program 1 times [2024-11-09 22:21:26,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:26,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373656806] [2024-11-09 22:21:26,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:26,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:21:26,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373656806] [2024-11-09 22:21:26,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373656806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:26,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962211129] [2024-11-09 22:21:26,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:26,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:26,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:26,362 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) [2024-11-09 22:21:26,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:21:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:26,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 22:21:26,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:21:26,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:21:26,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962211129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:26,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:26,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-09 22:21:26,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227555686] [2024-11-09 22:21:26,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:26,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:21:26,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:26,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:21:26,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:21:26,521 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:26,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:26,579 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2024-11-09 22:21:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:21:26,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 22:21:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:26,583 INFO L225 Difference]: With dead ends: 65 [2024-11-09 22:21:26,583 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 22:21:26,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:21:26,584 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:26,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 75 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:21:26,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 22:21:26,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2024-11-09 22:21:26,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-09 22:21:26,599 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 25 [2024-11-09 22:21:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:26,599 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-09 22:21:26,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-09 22:21:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 22:21:26,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:26,601 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:26,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 22:21:26,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:26,807 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:26,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:26,807 INFO L85 PathProgramCache]: Analyzing trace with hash 78192245, now seen corresponding path program 1 times [2024-11-09 22:21:26,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:26,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934957340] [2024-11-09 22:21:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:26,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:21:26,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:26,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934957340] [2024-11-09 22:21:26,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934957340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:26,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949455350] [2024-11-09 22:21:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:26,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:26,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:26,922 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) [2024-11-09 22:21:26,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:21:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:26,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 22:21:26,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:21:27,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:21:27,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949455350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:27,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:27,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2024-11-09 22:21:27,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631814841] [2024-11-09 22:21:27,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:27,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 22:21:27,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:27,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 22:21:27,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:21:27,094 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:27,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:27,394 INFO L93 Difference]: Finished difference Result 175 states and 220 transitions. [2024-11-09 22:21:27,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 22:21:27,395 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 22:21:27,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:27,396 INFO L225 Difference]: With dead ends: 175 [2024-11-09 22:21:27,399 INFO L226 Difference]: Without dead ends: 140 [2024-11-09 22:21:27,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:21:27,400 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 59 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:27,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 141 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:21:27,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-09 22:21:27,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 81. [2024-11-09 22:21:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2) internal successors, (96), 80 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:27,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2024-11-09 22:21:27,419 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 25 [2024-11-09 22:21:27,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:27,420 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2024-11-09 22:21:27,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:27,420 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2024-11-09 22:21:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 22:21:27,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:27,422 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:27,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 22:21:27,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:27,623 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:27,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:27,623 INFO L85 PathProgramCache]: Analyzing trace with hash -244725164, now seen corresponding path program 1 times [2024-11-09 22:21:27,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:27,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589752978] [2024-11-09 22:21:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:27,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:21:27,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:27,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589752978] [2024-11-09 22:21:27,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589752978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:27,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413278220] [2024-11-09 22:21:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:27,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:27,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:27,736 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) [2024-11-09 22:21:27,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 22:21:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:27,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 22:21:27,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:21:27,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:21:27,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413278220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:27,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:27,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-09 22:21:27,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25362695] [2024-11-09 22:21:27,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:27,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 22:21:27,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 22:21:27,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:21:27,952 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:28,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:28,056 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2024-11-09 22:21:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 22:21:28,057 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 22:21:28,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:28,058 INFO L225 Difference]: With dead ends: 106 [2024-11-09 22:21:28,058 INFO L226 Difference]: Without dead ends: 73 [2024-11-09 22:21:28,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:21:28,059 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:28,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 139 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:21:28,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-09 22:21:28,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2024-11-09 22:21:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2024-11-09 22:21:28,079 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 27 [2024-11-09 22:21:28,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:28,080 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2024-11-09 22:21:28,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:28,080 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2024-11-09 22:21:28,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:21:28,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:28,082 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:28,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 22:21:28,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 22:21:28,287 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:28,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:28,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1168498860, now seen corresponding path program 2 times [2024-11-09 22:21:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:28,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634899647] [2024-11-09 22:21:28,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:28,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:21:28,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:28,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634899647] [2024-11-09 22:21:28,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634899647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:28,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240089971] [2024-11-09 22:21:28,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:21:28,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:28,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:28,467 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) [2024-11-09 22:21:28,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 22:21:28,514 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:21:28,515 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:28,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 22:21:28,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 22:21:28,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 22:21:28,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240089971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:28,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:28,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2024-11-09 22:21:28,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565849477] [2024-11-09 22:21:28,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:28,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 22:21:28,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:28,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 22:21:28,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:21:28,697 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:29,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:29,053 INFO L93 Difference]: Finished difference Result 171 states and 218 transitions. [2024-11-09 22:21:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 22:21:29,054 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-09 22:21:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:29,055 INFO L225 Difference]: With dead ends: 171 [2024-11-09 22:21:29,055 INFO L226 Difference]: Without dead ends: 118 [2024-11-09 22:21:29,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:21:29,056 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 44 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:29,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 234 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:21:29,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-09 22:21:29,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 109. [2024-11-09 22:21:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.1944444444444444) internal successors, (129), 108 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 129 transitions. [2024-11-09 22:21:29,078 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 129 transitions. Word has length 31 [2024-11-09 22:21:29,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:29,078 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 129 transitions. [2024-11-09 22:21:29,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 129 transitions. [2024-11-09 22:21:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 22:21:29,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:29,080 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:29,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 22:21:29,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:29,280 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:29,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:29,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952309, now seen corresponding path program 2 times [2024-11-09 22:21:29,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:29,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673392087] [2024-11-09 22:21:29,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:29,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 22:21:29,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:29,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673392087] [2024-11-09 22:21:29,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673392087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:29,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583026092] [2024-11-09 22:21:29,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:21:29,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:29,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:29,413 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) [2024-11-09 22:21:29,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 22:21:29,457 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:21:29,457 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:29,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 22:21:29,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:21:29,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:21:29,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583026092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:29,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:29,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 9] total 20 [2024-11-09 22:21:29,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229899783] [2024-11-09 22:21:29,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:29,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 22:21:29,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 22:21:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-09 22:21:29,835 INFO L87 Difference]: Start difference. First operand 109 states and 129 transitions. Second operand has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:30,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:30,622 INFO L93 Difference]: Finished difference Result 265 states and 326 transitions. [2024-11-09 22:21:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 22:21:30,623 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-09 22:21:30,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:30,624 INFO L225 Difference]: With dead ends: 265 [2024-11-09 22:21:30,624 INFO L226 Difference]: Without dead ends: 197 [2024-11-09 22:21:30,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=284, Invalid=1198, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 22:21:30,625 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 98 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:30,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 483 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:21:30,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-09 22:21:30,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 162. [2024-11-09 22:21:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.1925465838509317) internal successors, (192), 161 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2024-11-09 22:21:30,657 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 33 [2024-11-09 22:21:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:30,657 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2024-11-09 22:21:30,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:30,659 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2024-11-09 22:21:30,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 22:21:30,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:30,661 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:30,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 22:21:30,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:30,862 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:30,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:30,863 INFO L85 PathProgramCache]: Analyzing trace with hash 138120179, now seen corresponding path program 3 times [2024-11-09 22:21:30,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:30,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153832813] [2024-11-09 22:21:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:30,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:21:31,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:31,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153832813] [2024-11-09 22:21:31,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153832813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:31,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178358709] [2024-11-09 22:21:31,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:21:31,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:31,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:31,047 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) [2024-11-09 22:21:31,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 22:21:31,096 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 22:21:31,096 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:31,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 22:21:31,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 22:21:31,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 22:21:31,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178358709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:31,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:31,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 15 [2024-11-09 22:21:31,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746458716] [2024-11-09 22:21:31,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:31,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 22:21:31,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 22:21:31,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:21:31,352 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:32,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:32,300 INFO L93 Difference]: Finished difference Result 224 states and 273 transitions. [2024-11-09 22:21:32,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-09 22:21:32,300 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 22:21:32,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:32,302 INFO L225 Difference]: With dead ends: 224 [2024-11-09 22:21:32,302 INFO L226 Difference]: Without dead ends: 175 [2024-11-09 22:21:32,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 67 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=292, Invalid=2570, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 22:21:32,303 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 117 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:32,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 503 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:21:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-09 22:21:32,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 140. [2024-11-09 22:21:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.1726618705035972) internal successors, (163), 139 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 163 transitions. [2024-11-09 22:21:32,332 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 163 transitions. Word has length 37 [2024-11-09 22:21:32,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:32,332 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 163 transitions. [2024-11-09 22:21:32,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:32,333 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 163 transitions. [2024-11-09 22:21:32,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 22:21:32,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:32,334 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:32,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 22:21:32,535 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,SelfDestructingSolverStorable12 [2024-11-09 22:21:32,536 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:32,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash -57382347, now seen corresponding path program 2 times [2024-11-09 22:21:32,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:32,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444850684] [2024-11-09 22:21:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:32,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 22:21:32,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:32,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444850684] [2024-11-09 22:21:32,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444850684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:32,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592820904] [2024-11-09 22:21:32,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:21:32,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:32,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:32,649 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) [2024-11-09 22:21:32,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 22:21:32,697 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:21:32,697 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:32,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 22:21:32,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:32,813 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:21:32,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:21:32,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592820904] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:32,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:32,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-09 22:21:32,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811138693] [2024-11-09 22:21:32,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:32,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 22:21:32,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:32,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 22:21:32,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:21:32,951 INFO L87 Difference]: Start difference. First operand 140 states and 163 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:34,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:34,039 INFO L93 Difference]: Finished difference Result 395 states and 492 transitions. [2024-11-09 22:21:34,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 22:21:34,040 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 22:21:34,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:34,041 INFO L225 Difference]: With dead ends: 395 [2024-11-09 22:21:34,041 INFO L226 Difference]: Without dead ends: 342 [2024-11-09 22:21:34,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=383, Invalid=2167, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 22:21:34,043 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 235 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:34,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 415 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 22:21:34,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-09 22:21:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 197. [2024-11-09 22:21:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.163265306122449) internal successors, (228), 196 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 228 transitions. [2024-11-09 22:21:34,080 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 228 transitions. Word has length 37 [2024-11-09 22:21:34,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:34,080 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 228 transitions. [2024-11-09 22:21:34,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:34,080 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 228 transitions. [2024-11-09 22:21:34,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 22:21:34,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:34,081 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:34,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 22:21:34,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 22:21:34,286 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:34,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:34,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1571767856, now seen corresponding path program 3 times [2024-11-09 22:21:34,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:34,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710964955] [2024-11-09 22:21:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:34,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 22:21:34,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:34,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710964955] [2024-11-09 22:21:34,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710964955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:34,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627883050] [2024-11-09 22:21:34,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:21:34,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:34,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:34,422 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) [2024-11-09 22:21:34,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 22:21:34,471 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 22:21:34,471 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:34,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 22:21:34,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 22:21:34,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 22:21:34,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627883050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:34,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:34,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-09 22:21:34,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469319847] [2024-11-09 22:21:34,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:34,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:21:34,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:34,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:21:34,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:21:34,569 INFO L87 Difference]: Start difference. First operand 197 states and 228 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:34,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:34,625 INFO L93 Difference]: Finished difference Result 248 states and 286 transitions. [2024-11-09 22:21:34,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:21:34,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-09 22:21:34,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:34,626 INFO L225 Difference]: With dead ends: 248 [2024-11-09 22:21:34,626 INFO L226 Difference]: Without dead ends: 204 [2024-11-09 22:21:34,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:21:34,627 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:34,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 87 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:21:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-09 22:21:34,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2024-11-09 22:21:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.1576354679802956) internal successors, (235), 203 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 235 transitions. [2024-11-09 22:21:34,662 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 235 transitions. Word has length 39 [2024-11-09 22:21:34,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:34,662 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 235 transitions. [2024-11-09 22:21:34,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:34,662 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 235 transitions. [2024-11-09 22:21:34,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 22:21:34,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:34,663 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:34,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 22:21:34,863 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,SelfDestructingSolverStorable14 [2024-11-09 22:21:34,864 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:34,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash 840258518, now seen corresponding path program 4 times [2024-11-09 22:21:34,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:34,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249565929] [2024-11-09 22:21:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:34,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 22:21:35,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:35,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249565929] [2024-11-09 22:21:35,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249565929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:35,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44930767] [2024-11-09 22:21:35,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:21:35,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:35,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:35,015 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) [2024-11-09 22:21:35,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 22:21:35,088 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:21:35,088 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:35,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 22:21:35,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 22:21:35,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 22:21:35,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44930767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:35,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:35,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 6] total 17 [2024-11-09 22:21:35,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578115113] [2024-11-09 22:21:35,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:35,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 22:21:35,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 22:21:35,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-11-09 22:21:35,230 INFO L87 Difference]: Start difference. First operand 204 states and 235 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:35,548 INFO L93 Difference]: Finished difference Result 449 states and 543 transitions. [2024-11-09 22:21:35,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 22:21:35,548 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-09 22:21:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:35,550 INFO L225 Difference]: With dead ends: 449 [2024-11-09 22:21:35,550 INFO L226 Difference]: Without dead ends: 366 [2024-11-09 22:21:35,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:21:35,552 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 128 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:35,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 371 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:21:35,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-09 22:21:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 214. [2024-11-09 22:21:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.1455399061032865) internal successors, (244), 213 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 244 transitions. [2024-11-09 22:21:35,586 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 244 transitions. Word has length 39 [2024-11-09 22:21:35,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:35,586 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 244 transitions. [2024-11-09 22:21:35,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 244 transitions. [2024-11-09 22:21:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 22:21:35,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:35,587 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:35,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 22:21:35,791 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,SelfDestructingSolverStorable15 [2024-11-09 22:21:35,791 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:35,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:35,792 INFO L85 PathProgramCache]: Analyzing trace with hash -223115597, now seen corresponding path program 4 times [2024-11-09 22:21:35,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:35,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993485173] [2024-11-09 22:21:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:35,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 22:21:35,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:35,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993485173] [2024-11-09 22:21:35,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993485173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:35,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413589002] [2024-11-09 22:21:35,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:21:35,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:35,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:35,937 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) [2024-11-09 22:21:35,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 22:21:35,986 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:21:35,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:35,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 22:21:35,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 22:21:36,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 22:21:36,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413589002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:36,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:36,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 19 [2024-11-09 22:21:36,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495895931] [2024-11-09 22:21:36,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:36,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 22:21:36,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:36,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 22:21:36,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:21:36,188 INFO L87 Difference]: Start difference. First operand 214 states and 244 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:36,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:36,563 INFO L93 Difference]: Finished difference Result 342 states and 393 transitions. [2024-11-09 22:21:36,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 22:21:36,563 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-09 22:21:36,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:36,565 INFO L225 Difference]: With dead ends: 342 [2024-11-09 22:21:36,566 INFO L226 Difference]: Without dead ends: 279 [2024-11-09 22:21:36,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2024-11-09 22:21:36,567 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 72 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:36,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 480 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:21:36,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-09 22:21:36,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 206. [2024-11-09 22:21:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.1365853658536584) internal successors, (233), 205 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 233 transitions. [2024-11-09 22:21:36,633 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 233 transitions. Word has length 41 [2024-11-09 22:21:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:36,633 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 233 transitions. [2024-11-09 22:21:36,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 233 transitions. [2024-11-09 22:21:36,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 22:21:36,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:36,634 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:36,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 22:21:36,838 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,SelfDestructingSolverStorable16 [2024-11-09 22:21:36,839 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:36,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:36,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1905334967, now seen corresponding path program 5 times [2024-11-09 22:21:36,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:36,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686498436] [2024-11-09 22:21:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:36,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:21:36,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:36,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686498436] [2024-11-09 22:21:36,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686498436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:36,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047090621] [2024-11-09 22:21:36,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:21:36,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:36,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:36,990 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) [2024-11-09 22:21:36,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 22:21:37,056 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-09 22:21:37,056 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:37,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 22:21:37,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:21:37,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 22:21:37,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047090621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:37,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:37,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 5] total 21 [2024-11-09 22:21:37,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748132094] [2024-11-09 22:21:37,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:37,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 22:21:37,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:37,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 22:21:37,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:21:37,273 INFO L87 Difference]: Start difference. First operand 206 states and 233 transitions. Second operand has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:38,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:38,035 INFO L93 Difference]: Finished difference Result 447 states and 536 transitions. [2024-11-09 22:21:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 22:21:38,035 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-09 22:21:38,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:38,037 INFO L225 Difference]: With dead ends: 447 [2024-11-09 22:21:38,037 INFO L226 Difference]: Without dead ends: 398 [2024-11-09 22:21:38,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=319, Invalid=2131, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 22:21:38,038 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 102 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:38,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 736 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:21:38,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-09 22:21:38,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 245. [2024-11-09 22:21:38,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.151639344262295) internal successors, (281), 244 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 281 transitions. [2024-11-09 22:21:38,083 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 281 transitions. Word has length 41 [2024-11-09 22:21:38,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:38,083 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 281 transitions. [2024-11-09 22:21:38,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 281 transitions. [2024-11-09 22:21:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 22:21:38,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:38,084 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:38,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 22:21:38,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 22:21:38,288 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:38,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:38,288 INFO L85 PathProgramCache]: Analyzing trace with hash 280368210, now seen corresponding path program 6 times [2024-11-09 22:21:38,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:38,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256914713] [2024-11-09 22:21:38,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:38,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:38,476 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:21:38,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:38,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256914713] [2024-11-09 22:21:38,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256914713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:38,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905689231] [2024-11-09 22:21:38,477 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:21:38,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:38,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:38,478 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:21:38,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 22:21:38,535 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-09 22:21:38,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:38,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 22:21:38,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 22:21:38,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 22:21:38,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905689231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:38,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:38,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 18 [2024-11-09 22:21:38,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072644235] [2024-11-09 22:21:38,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:38,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 22:21:38,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:38,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 22:21:38,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2024-11-09 22:21:38,782 INFO L87 Difference]: Start difference. First operand 245 states and 281 transitions. Second operand has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:39,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:39,927 INFO L93 Difference]: Finished difference Result 356 states and 422 transitions. [2024-11-09 22:21:39,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-09 22:21:39,927 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-09 22:21:39,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:39,928 INFO L225 Difference]: With dead ends: 356 [2024-11-09 22:21:39,928 INFO L226 Difference]: Without dead ends: 319 [2024-11-09 22:21:39,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 77 SyntacticMatches, 8 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=434, Invalid=4822, Unknown=0, NotChecked=0, Total=5256 [2024-11-09 22:21:39,931 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 173 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:39,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 870 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 22:21:39,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-09 22:21:39,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 235. [2024-11-09 22:21:39,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1452991452991452) internal successors, (268), 234 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:39,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 268 transitions. [2024-11-09 22:21:39,976 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 268 transitions. Word has length 43 [2024-11-09 22:21:39,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:39,976 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 268 transitions. [2024-11-09 22:21:39,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:39,976 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 268 transitions. [2024-11-09 22:21:39,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 22:21:39,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:39,977 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:39,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 22:21:40,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:40,181 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:40,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:40,182 INFO L85 PathProgramCache]: Analyzing trace with hash 365190959, now seen corresponding path program 5 times [2024-11-09 22:21:40,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:40,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749532084] [2024-11-09 22:21:40,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:40,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:21:40,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:40,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749532084] [2024-11-09 22:21:40,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749532084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:40,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724380878] [2024-11-09 22:21:40,338 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:21:40,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:40,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:40,340 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:21:40,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 22:21:40,406 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 22:21:40,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:40,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 22:21:40,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:21:40,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:21:40,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724380878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:40,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:40,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-09 22:21:40,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747721002] [2024-11-09 22:21:40,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:40,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:21:40,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:40,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:21:40,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:21:40,541 INFO L87 Difference]: Start difference. First operand 235 states and 268 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:40,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:40,689 INFO L93 Difference]: Finished difference Result 290 states and 329 transitions. [2024-11-09 22:21:40,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 22:21:40,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-09 22:21:40,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:40,691 INFO L225 Difference]: With dead ends: 290 [2024-11-09 22:21:40,691 INFO L226 Difference]: Without dead ends: 267 [2024-11-09 22:21:40,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 8 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:21:40,692 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 13 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:40,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 121 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:21:40,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-09 22:21:40,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2024-11-09 22:21:40,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.131578947368421) internal successors, (301), 266 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:40,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 301 transitions. [2024-11-09 22:21:40,749 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 301 transitions. Word has length 45 [2024-11-09 22:21:40,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:40,749 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 301 transitions. [2024-11-09 22:21:40,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:40,749 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 301 transitions. [2024-11-09 22:21:40,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 22:21:40,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:40,750 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:40,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 22:21:40,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:40,955 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:40,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash -391844873, now seen corresponding path program 6 times [2024-11-09 22:21:40,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:40,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464537492] [2024-11-09 22:21:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:40,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 22:21:41,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:41,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464537492] [2024-11-09 22:21:41,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464537492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:41,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537514021] [2024-11-09 22:21:41,119 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:21:41,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:41,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:41,122 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:21:41,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 22:21:41,168 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-09 22:21:41,168 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:41,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 22:21:41,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 22:21:41,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 22:21:41,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537514021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:41,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:41,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 10] total 27 [2024-11-09 22:21:41,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911008078] [2024-11-09 22:21:41,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:41,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 22:21:41,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:41,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 22:21:41,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2024-11-09 22:21:41,694 INFO L87 Difference]: Start difference. First operand 267 states and 301 transitions. Second operand has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:44,023 INFO L93 Difference]: Finished difference Result 565 states and 664 transitions. [2024-11-09 22:21:44,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-09 22:21:44,024 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-09 22:21:44,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:44,026 INFO L225 Difference]: With dead ends: 565 [2024-11-09 22:21:44,026 INFO L226 Difference]: Without dead ends: 411 [2024-11-09 22:21:44,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=920, Invalid=7270, Unknown=0, NotChecked=0, Total=8190 [2024-11-09 22:21:44,029 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 266 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:44,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1660 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 22:21:44,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-09 22:21:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 261. [2024-11-09 22:21:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.176923076923077) internal successors, (306), 260 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 306 transitions. [2024-11-09 22:21:44,075 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 306 transitions. Word has length 45 [2024-11-09 22:21:44,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:44,075 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 306 transitions. [2024-11-09 22:21:44,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:44,076 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 306 transitions. [2024-11-09 22:21:44,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 22:21:44,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:44,076 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:44,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 22:21:44,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:44,277 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:44,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:44,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1468632749, now seen corresponding path program 7 times [2024-11-09 22:21:44,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:44,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529317051] [2024-11-09 22:21:44,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:44,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 22:21:44,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529317051] [2024-11-09 22:21:44,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529317051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:44,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782986933] [2024-11-09 22:21:44,406 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:21:44,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:44,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:44,408 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:21:44,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 22:21:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:44,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 22:21:44,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 22:21:44,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 22:21:44,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782986933] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:44,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:44,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-09 22:21:44,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684618459] [2024-11-09 22:21:44,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:44,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:21:44,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:44,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:21:44,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:21:44,581 INFO L87 Difference]: Start difference. First operand 261 states and 306 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:44,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:44,662 INFO L93 Difference]: Finished difference Result 288 states and 337 transitions. [2024-11-09 22:21:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:21:44,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-09 22:21:44,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:44,664 INFO L225 Difference]: With dead ends: 288 [2024-11-09 22:21:44,664 INFO L226 Difference]: Without dead ends: 238 [2024-11-09 22:21:44,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:21:44,666 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:44,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:21:44,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-09 22:21:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-11-09 22:21:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.1856540084388185) internal successors, (281), 237 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 281 transitions. [2024-11-09 22:21:44,723 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 281 transitions. Word has length 49 [2024-11-09 22:21:44,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:44,724 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 281 transitions. [2024-11-09 22:21:44,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:44,724 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 281 transitions. [2024-11-09 22:21:44,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 22:21:44,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:44,725 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:44,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 22:21:44,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:44,928 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:44,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1464176689, now seen corresponding path program 3 times [2024-11-09 22:21:44,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:44,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364159146] [2024-11-09 22:21:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:44,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:21:45,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:45,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364159146] [2024-11-09 22:21:45,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364159146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:45,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088027547] [2024-11-09 22:21:45,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:21:45,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:45,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:45,139 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:21:45,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 22:21:45,189 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 22:21:45,189 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:45,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 22:21:45,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 50 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 22:21:45,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 50 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 22:21:45,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088027547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:45,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:45,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 21 [2024-11-09 22:21:45,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319432139] [2024-11-09 22:21:45,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:45,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 22:21:45,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 22:21:45,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:21:45,522 INFO L87 Difference]: Start difference. First operand 238 states and 281 transitions. Second operand has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:47,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:47,255 INFO L93 Difference]: Finished difference Result 476 states and 593 transitions. [2024-11-09 22:21:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-09 22:21:47,255 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-09 22:21:47,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:47,256 INFO L225 Difference]: With dead ends: 476 [2024-11-09 22:21:47,256 INFO L226 Difference]: Without dead ends: 407 [2024-11-09 22:21:47,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 93 SyntacticMatches, 10 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2357 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=590, Invalid=7420, Unknown=0, NotChecked=0, Total=8010 [2024-11-09 22:21:47,258 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 211 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:47,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1213 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 22:21:47,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-11-09 22:21:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 302. [2024-11-09 22:21:47,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.176079734219269) internal successors, (354), 301 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 354 transitions. [2024-11-09 22:21:47,314 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 354 transitions. Word has length 49 [2024-11-09 22:21:47,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:47,314 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 354 transitions. [2024-11-09 22:21:47,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 354 transitions. [2024-11-09 22:21:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 22:21:47,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:47,315 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:47,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 22:21:47,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:47,515 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:47,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:47,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1537881450, now seen corresponding path program 7 times [2024-11-09 22:21:47,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:47,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582619686] [2024-11-09 22:21:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:47,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 22:21:47,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:47,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582619686] [2024-11-09 22:21:47,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582619686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:47,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104501600] [2024-11-09 22:21:47,713 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:21:47,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:47,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:47,714 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:21:47,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 22:21:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:47,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 22:21:47,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 40 proven. 44 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 22:21:47,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 40 proven. 44 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 22:21:48,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104501600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:48,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:48,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 8] total 23 [2024-11-09 22:21:48,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096229434] [2024-11-09 22:21:48,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:48,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 22:21:48,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:48,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 22:21:48,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2024-11-09 22:21:48,099 INFO L87 Difference]: Start difference. First operand 302 states and 354 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:50,280 INFO L93 Difference]: Finished difference Result 581 states and 694 transitions. [2024-11-09 22:21:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-09 22:21:50,280 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-09 22:21:50,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:50,282 INFO L225 Difference]: With dead ends: 581 [2024-11-09 22:21:50,282 INFO L226 Difference]: Without dead ends: 482 [2024-11-09 22:21:50,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 96 SyntacticMatches, 10 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1930 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=663, Invalid=6477, Unknown=0, NotChecked=0, Total=7140 [2024-11-09 22:21:50,284 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 229 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:50,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1369 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 22:21:50,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-09 22:21:50,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 327. [2024-11-09 22:21:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.1595092024539877) internal successors, (378), 326 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:50,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 378 transitions. [2024-11-09 22:21:50,342 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 378 transitions. Word has length 51 [2024-11-09 22:21:50,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:50,342 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 378 transitions. [2024-11-09 22:21:50,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:50,343 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 378 transitions. [2024-11-09 22:21:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 22:21:50,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:50,344 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:50,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 22:21:50,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:50,544 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:50,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:50,545 INFO L85 PathProgramCache]: Analyzing trace with hash 545694253, now seen corresponding path program 8 times [2024-11-09 22:21:50,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:50,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608460155] [2024-11-09 22:21:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:50,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 22:21:50,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:50,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608460155] [2024-11-09 22:21:50,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608460155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:50,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815914995] [2024-11-09 22:21:50,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:21:50,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:50,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:50,770 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:21:50,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 22:21:50,826 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:21:50,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:50,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 22:21:50,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 22:21:50,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:51,088 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 22:21:51,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815914995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:51,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:51,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2024-11-09 22:21:51,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050189102] [2024-11-09 22:21:51,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:51,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 22:21:51,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:51,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 22:21:51,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-09 22:21:51,090 INFO L87 Difference]: Start difference. First operand 327 states and 378 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:55,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 22:21:55,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:55,386 INFO L93 Difference]: Finished difference Result 636 states and 747 transitions. [2024-11-09 22:21:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 22:21:55,387 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-09 22:21:55,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:55,389 INFO L225 Difference]: With dead ends: 636 [2024-11-09 22:21:55,389 INFO L226 Difference]: Without dead ends: 570 [2024-11-09 22:21:55,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 95 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:21:55,390 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 60 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:55,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 228 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 101 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-09 22:21:55,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-09 22:21:55,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 464. [2024-11-09 22:21:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.1684665226781858) internal successors, (541), 463 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 541 transitions. [2024-11-09 22:21:55,497 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 541 transitions. Word has length 53 [2024-11-09 22:21:55,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:55,497 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 541 transitions. [2024-11-09 22:21:55,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:55,497 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 541 transitions. [2024-11-09 22:21:55,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 22:21:55,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:55,499 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:55,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 22:21:55,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 22:21:55,699 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:55,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1813464695, now seen corresponding path program 8 times [2024-11-09 22:21:55,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:55,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499250606] [2024-11-09 22:21:55,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:55,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:21:55,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:55,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499250606] [2024-11-09 22:21:55,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499250606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:55,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091604626] [2024-11-09 22:21:55,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:21:55,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:55,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:55,924 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:21:55,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 22:21:55,980 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:21:55,980 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:55,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 22:21:55,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:21:56,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 22:21:56,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091604626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:56,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:56,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21, 13] total 36 [2024-11-09 22:21:56,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875078224] [2024-11-09 22:21:56,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:56,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-09 22:21:56,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-09 22:21:56,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 22:21:56,584 INFO L87 Difference]: Start difference. First operand 464 states and 541 transitions. Second operand has 36 states, 36 states have (on average 2.861111111111111) internal successors, (103), 36 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:59,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:59,753 INFO L93 Difference]: Finished difference Result 1002 states and 1229 transitions. [2024-11-09 22:21:59,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-09 22:21:59,753 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.861111111111111) internal successors, (103), 36 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-09 22:21:59,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:59,756 INFO L225 Difference]: With dead ends: 1002 [2024-11-09 22:21:59,756 INFO L226 Difference]: Without dead ends: 899 [2024-11-09 22:21:59,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2806 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1249, Invalid=8453, Unknown=0, NotChecked=0, Total=9702 [2024-11-09 22:21:59,759 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 281 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:59,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 2079 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 22:21:59,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2024-11-09 22:21:59,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 485. [2024-11-09 22:21:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.2107438016528926) internal successors, (586), 484 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 586 transitions. [2024-11-09 22:21:59,859 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 586 transitions. Word has length 53 [2024-11-09 22:21:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:59,860 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 586 transitions. [2024-11-09 22:21:59,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.861111111111111) internal successors, (103), 36 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 586 transitions. [2024-11-09 22:21:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 22:21:59,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:59,861 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:59,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 22:22:00,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 22:22:00,061 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:22:00,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:22:00,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1750061359, now seen corresponding path program 9 times [2024-11-09 22:22:00,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:22:00,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337218779] [2024-11-09 22:22:00,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:22:00,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:22:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:22:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-09 22:22:00,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:22:00,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337218779] [2024-11-09 22:22:00,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337218779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:22:00,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256262182] [2024-11-09 22:22:00,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:22:00,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:00,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:22:00,291 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:22:00,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 22:22:00,362 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 22:22:00,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:22:00,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 22:22:00,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:22:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 44 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 22:22:00,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:22:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 44 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 22:22:00,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256262182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:22:00,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:22:00,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 21 [2024-11-09 22:22:00,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661159271] [2024-11-09 22:22:00,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:22:00,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 22:22:00,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:22:00,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 22:22:00,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:22:00,793 INFO L87 Difference]: Start difference. First operand 485 states and 586 transitions. Second operand has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:22:02,139 INFO L93 Difference]: Finished difference Result 762 states and 904 transitions. [2024-11-09 22:22:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-09 22:22:02,139 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-09 22:22:02,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:22:02,142 INFO L225 Difference]: With dead ends: 762 [2024-11-09 22:22:02,142 INFO L226 Difference]: Without dead ends: 685 [2024-11-09 22:22:02,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 106 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=362, Invalid=3298, Unknown=0, NotChecked=0, Total=3660 [2024-11-09 22:22:02,143 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 115 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 22:22:02,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 951 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 22:22:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-09 22:22:02,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 529. [2024-11-09 22:22:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.1950757575757576) internal successors, (631), 528 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 631 transitions. [2024-11-09 22:22:02,255 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 631 transitions. Word has length 57 [2024-11-09 22:22:02,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:22:02,255 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 631 transitions. [2024-11-09 22:22:02,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:02,255 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 631 transitions. [2024-11-09 22:22:02,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 22:22:02,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:22:02,257 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:22:02,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 22:22:02,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 22:22:02,457 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:22:02,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:22:02,458 INFO L85 PathProgramCache]: Analyzing trace with hash -870249033, now seen corresponding path program 9 times [2024-11-09 22:22:02,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:22:02,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706668559] [2024-11-09 22:22:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:22:02,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:22:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:22:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:22:02,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:22:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706668559] [2024-11-09 22:22:02,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706668559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:22:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681428376] [2024-11-09 22:22:02,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:22:02,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:02,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:22:02,722 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:22:02,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 22:22:02,767 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 22:22:02,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:22:02,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 22:22:02,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:22:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 22:22:02,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:22:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 22:22:03,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681428376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:22:03,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:22:03,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 8] total 26 [2024-11-09 22:22:03,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078128192] [2024-11-09 22:22:03,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:22:03,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 22:22:03,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:22:03,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 22:22:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-11-09 22:22:03,032 INFO L87 Difference]: Start difference. First operand 529 states and 631 transitions. Second operand has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:22:04,237 INFO L93 Difference]: Finished difference Result 1047 states and 1285 transitions. [2024-11-09 22:22:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-09 22:22:04,237 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-09 22:22:04,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:22:04,240 INFO L225 Difference]: With dead ends: 1047 [2024-11-09 22:22:04,240 INFO L226 Difference]: Without dead ends: 910 [2024-11-09 22:22:04,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 105 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=557, Invalid=2523, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 22:22:04,241 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 330 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:22:04,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1595 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 22:22:04,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2024-11-09 22:22:04,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 652. [2024-11-09 22:22:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 1.1490015360983103) internal successors, (748), 651 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 748 transitions. [2024-11-09 22:22:04,372 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 748 transitions. Word has length 57 [2024-11-09 22:22:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:22:04,373 INFO L471 AbstractCegarLoop]: Abstraction has 652 states and 748 transitions. [2024-11-09 22:22:04,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:04,373 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 748 transitions. [2024-11-09 22:22:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 22:22:04,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:22:04,374 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 7, 7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:22:04,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-09 22:22:04,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:04,575 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:22:04,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:22:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1367975922, now seen corresponding path program 4 times [2024-11-09 22:22:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:22:04,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14004907] [2024-11-09 22:22:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:22:04,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:22:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:22:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 28 proven. 84 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 22:22:04,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:22:04,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14004907] [2024-11-09 22:22:04,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14004907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:22:04,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566063633] [2024-11-09 22:22:04,807 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:22:04,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:04,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:22:04,809 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:22:04,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 22:22:04,867 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:22:04,867 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:22:04,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 22:22:04,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:22:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:22:05,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:22:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 40 proven. 64 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-09 22:22:05,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566063633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:22:05,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:22:05,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 9] total 25 [2024-11-09 22:22:05,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026066304] [2024-11-09 22:22:05,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:22:05,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 22:22:05,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:22:05,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 22:22:05,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2024-11-09 22:22:05,224 INFO L87 Difference]: Start difference. First operand 652 states and 748 transitions. Second operand has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:06,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:22:06,842 INFO L93 Difference]: Finished difference Result 1318 states and 1584 transitions. [2024-11-09 22:22:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-09 22:22:06,842 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-09 22:22:06,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:22:06,845 INFO L225 Difference]: With dead ends: 1318 [2024-11-09 22:22:06,845 INFO L226 Difference]: Without dead ends: 1179 [2024-11-09 22:22:06,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1283, Invalid=5359, Unknown=0, NotChecked=0, Total=6642 [2024-11-09 22:22:06,846 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 316 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 22:22:06,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1329 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 22:22:06,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2024-11-09 22:22:06,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 752. [2024-11-09 22:22:06,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 1.166444740346205) internal successors, (876), 751 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 876 transitions. [2024-11-09 22:22:06,996 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 876 transitions. Word has length 59 [2024-11-09 22:22:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:22:06,996 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 876 transitions. [2024-11-09 22:22:06,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.36) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:06,996 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 876 transitions. [2024-11-09 22:22:06,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 22:22:06,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:22:06,997 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:22:07,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 22:22:07,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 22:22:07,198 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:22:07,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:22:07,198 INFO L85 PathProgramCache]: Analyzing trace with hash -624988809, now seen corresponding path program 10 times [2024-11-09 22:22:07,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:22:07,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27412637] [2024-11-09 22:22:07,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:22:07,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:22:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:22:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:22:07,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:22:07,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27412637] [2024-11-09 22:22:07,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27412637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:22:07,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227291903] [2024-11-09 22:22:07,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:22:07,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:07,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:22:07,461 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:22:07,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 22:22:07,515 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:22:07,515 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:22:07,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 22:22:07,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:22:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:22:07,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:22:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 22:22:07,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227291903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:22:07,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:22:07,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 6] total 23 [2024-11-09 22:22:07,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433437222] [2024-11-09 22:22:07,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:22:07,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 22:22:07,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:22:07,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 22:22:07,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-09 22:22:07,707 INFO L87 Difference]: Start difference. First operand 752 states and 876 transitions. Second operand has 23 states, 23 states have (on average 4.130434782608695) internal successors, (95), 23 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:10,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:22:10,120 INFO L93 Difference]: Finished difference Result 1442 states and 1724 transitions. [2024-11-09 22:22:10,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-09 22:22:10,121 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.130434782608695) internal successors, (95), 23 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-09 22:22:10,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:22:10,124 INFO L225 Difference]: With dead ends: 1442 [2024-11-09 22:22:10,124 INFO L226 Difference]: Without dead ends: 1213 [2024-11-09 22:22:10,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2883 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=758, Invalid=8748, Unknown=0, NotChecked=0, Total=9506 [2024-11-09 22:22:10,125 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 237 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 22:22:10,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1780 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 22:22:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2024-11-09 22:22:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 767. [2024-11-09 22:22:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 1.1723237597911227) internal successors, (898), 766 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 898 transitions. [2024-11-09 22:22:10,302 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 898 transitions. Word has length 61 [2024-11-09 22:22:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:22:10,303 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 898 transitions. [2024-11-09 22:22:10,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.130434782608695) internal successors, (95), 23 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 898 transitions. [2024-11-09 22:22:10,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 22:22:10,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:22:10,305 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:22:10,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 22:22:10,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:10,505 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:22:10,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:22:10,506 INFO L85 PathProgramCache]: Analyzing trace with hash -734701106, now seen corresponding path program 5 times [2024-11-09 22:22:10,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:22:10,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026930812] [2024-11-09 22:22:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:22:10,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:22:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:22:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 22:22:10,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:22:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026930812] [2024-11-09 22:22:10,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026930812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:22:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603045505] [2024-11-09 22:22:10,736 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:22:10,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:10,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:22:10,737 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:22:10,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 22:22:10,859 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-09 22:22:10,859 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:22:10,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 22:22:10,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:22:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 22:22:11,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:22:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 22:22:11,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603045505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:22:11,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:22:11,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 42 [2024-11-09 22:22:11,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733304919] [2024-11-09 22:22:11,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:22:11,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-09 22:22:11,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:22:11,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-09 22:22:11,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 22:22:11,504 INFO L87 Difference]: Start difference. First operand 767 states and 898 transitions. Second operand has 42 states, 42 states have (on average 2.5) internal successors, (105), 42 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:22:20,091 INFO L93 Difference]: Finished difference Result 2315 states and 2795 transitions. [2024-11-09 22:22:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2024-11-09 22:22:20,092 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.5) internal successors, (105), 42 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-09 22:22:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:22:20,096 INFO L225 Difference]: With dead ends: 2315 [2024-11-09 22:22:20,096 INFO L226 Difference]: Without dead ends: 2044 [2024-11-09 22:22:20,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21000 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=5681, Invalid=50725, Unknown=0, NotChecked=0, Total=56406 [2024-11-09 22:22:20,101 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 1267 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:22:20,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 2486 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 22:22:20,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2024-11-09 22:22:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1171. [2024-11-09 22:22:20,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 1.1794871794871795) internal successors, (1380), 1170 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1380 transitions. [2024-11-09 22:22:20,473 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1380 transitions. Word has length 63 [2024-11-09 22:22:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:22:20,473 INFO L471 AbstractCegarLoop]: Abstraction has 1171 states and 1380 transitions. [2024-11-09 22:22:20,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.5) internal successors, (105), 42 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:20,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1380 transitions. [2024-11-09 22:22:20,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 22:22:20,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:22:20,476 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:22:20,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 22:22:20,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-09 22:22:20,678 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:22:20,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:22:20,678 INFO L85 PathProgramCache]: Analyzing trace with hash 96644905, now seen corresponding path program 11 times [2024-11-09 22:22:20,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:22:20,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975236963] [2024-11-09 22:22:20,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:22:20,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:22:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:22:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 50 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 22:22:20,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:22:20,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975236963] [2024-11-09 22:22:20,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975236963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:22:20,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000104872] [2024-11-09 22:22:20,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:22:20,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:20,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:22:20,885 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:22:20,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 22:22:21,005 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 22:22:21,006 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:22:21,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 22:22:21,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:22:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 50 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 22:22:21,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:22:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 50 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 22:22:21,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000104872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:22:21,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:22:21,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2024-11-09 22:22:21,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10801647] [2024-11-09 22:22:21,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:22:21,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 22:22:21,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:22:21,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 22:22:21,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:22:21,200 INFO L87 Difference]: Start difference. First operand 1171 states and 1380 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:22:21,650 INFO L93 Difference]: Finished difference Result 1272 states and 1491 transitions. [2024-11-09 22:22:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 22:22:21,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-09 22:22:21,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:22:21,654 INFO L225 Difference]: With dead ends: 1272 [2024-11-09 22:22:21,654 INFO L226 Difference]: Without dead ends: 1239 [2024-11-09 22:22:21,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 122 SyntacticMatches, 12 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-09 22:22:21,655 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 17 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:22:21,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 194 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:22:21,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2024-11-09 22:22:22,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1181. [2024-11-09 22:22:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 1180 states have (on average 1.1771186440677965) internal successors, (1389), 1180 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1389 transitions. [2024-11-09 22:22:22,071 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1389 transitions. Word has length 65 [2024-11-09 22:22:22,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:22:22,072 INFO L471 AbstractCegarLoop]: Abstraction has 1181 states and 1389 transitions. [2024-11-09 22:22:22,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1389 transitions. [2024-11-09 22:22:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 22:22:22,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:22:22,075 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:22:22,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-09 22:22:22,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:22,280 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:22:22,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:22:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1163865033, now seen corresponding path program 12 times [2024-11-09 22:22:22,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:22:22,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752199557] [2024-11-09 22:22:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:22:22,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:22:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:22:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 22:22:22,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:22:22,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752199557] [2024-11-09 22:22:22,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752199557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:22:22,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25787996] [2024-11-09 22:22:22,569 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:22:22,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:22,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:22:22,570 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:22:22,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 22:22:22,618 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 22:22:22,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:22:22,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 22:22:22,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:22:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 22:22:22,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:22:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 22:22:23,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25787996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:22:23,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:22:23,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 33 [2024-11-09 22:22:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459730454] [2024-11-09 22:22:23,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:22:23,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 22:22:23,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:22:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 22:22:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 22:22:23,238 INFO L87 Difference]: Start difference. First operand 1181 states and 1389 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:27,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:22:27,194 INFO L93 Difference]: Finished difference Result 1774 states and 2092 transitions. [2024-11-09 22:22:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-09 22:22:27,194 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-09 22:22:27,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:22:27,198 INFO L225 Difference]: With dead ends: 1774 [2024-11-09 22:22:27,198 INFO L226 Difference]: Without dead ends: 1478 [2024-11-09 22:22:27,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 107 SyntacticMatches, 10 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4097 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=980, Invalid=14026, Unknown=0, NotChecked=0, Total=15006 [2024-11-09 22:22:27,200 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 310 mSDsluCounter, 2872 mSDsCounter, 0 mSdLazyCounter, 2881 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 3050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:22:27,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 3011 Invalid, 3050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2881 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 22:22:27,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2024-11-09 22:22:27,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1011. [2024-11-09 22:22:27,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 1.191089108910891) internal successors, (1203), 1010 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:27,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1203 transitions. [2024-11-09 22:22:27,491 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1203 transitions. Word has length 65 [2024-11-09 22:22:27,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:22:27,492 INFO L471 AbstractCegarLoop]: Abstraction has 1011 states and 1203 transitions. [2024-11-09 22:22:27,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:27,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1203 transitions. [2024-11-09 22:22:27,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 22:22:27,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:22:27,494 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:22:27,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-09 22:22:27,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:27,695 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:22:27,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:22:27,695 INFO L85 PathProgramCache]: Analyzing trace with hash -984337650, now seen corresponding path program 6 times [2024-11-09 22:22:27,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:22:27,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425534812] [2024-11-09 22:22:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:22:27,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:22:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:22:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:22:28,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:22:28,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425534812] [2024-11-09 22:22:28,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425534812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:22:28,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855167720] [2024-11-09 22:22:28,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:22:28,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:28,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:22:28,076 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:22:28,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 22:22:28,148 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-09 22:22:28,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:22:28,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 22:22:28,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:22:28,447 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 16 proven. 128 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 22:22:28,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:22:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 16 proven. 128 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 22:22:28,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855167720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:22:28,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:22:28,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11, 11] total 30 [2024-11-09 22:22:28,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596148526] [2024-11-09 22:22:28,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:22:28,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 22:22:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:22:28,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 22:22:28,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=811, Unknown=0, NotChecked=0, Total=870 [2024-11-09 22:22:28,912 INFO L87 Difference]: Start difference. First operand 1011 states and 1203 transitions. Second operand has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:22:36,743 INFO L93 Difference]: Finished difference Result 1565 states and 1915 transitions. [2024-11-09 22:22:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2024-11-09 22:22:36,743 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-09 22:22:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:22:36,746 INFO L225 Difference]: With dead ends: 1565 [2024-11-09 22:22:36,746 INFO L226 Difference]: Without dead ends: 1436 [2024-11-09 22:22:36,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 126 SyntacticMatches, 16 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14941 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1940, Invalid=39066, Unknown=0, NotChecked=0, Total=41006 [2024-11-09 22:22:36,749 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 683 mSDsluCounter, 3862 mSDsCounter, 0 mSdLazyCounter, 4632 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 4933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 4632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:22:36,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 4037 Invalid, 4933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 4632 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 22:22:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2024-11-09 22:22:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 995. [2024-11-09 22:22:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 1.1820925553319919) internal successors, (1175), 994 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1175 transitions. [2024-11-09 22:22:37,056 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1175 transitions. Word has length 67 [2024-11-09 22:22:37,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:22:37,057 INFO L471 AbstractCegarLoop]: Abstraction has 995 states and 1175 transitions. [2024-11-09 22:22:37,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1175 transitions. [2024-11-09 22:22:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 22:22:37,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:22:37,059 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:22:37,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 22:22:37,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:37,259 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:22:37,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:22:37,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1418260057, now seen corresponding path program 13 times [2024-11-09 22:22:37,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:22:37,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346885890] [2024-11-09 22:22:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:22:37,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:22:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:22:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 22:22:37,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:22:37,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346885890] [2024-11-09 22:22:37,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346885890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:22:37,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646157566] [2024-11-09 22:22:37,430 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:22:37,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:37,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:22:37,431 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:22:37,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 22:22:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:22:37,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 22:22:37,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:22:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 22:22:37,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:22:37,653 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 22:22:37,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646157566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:22:37,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:22:37,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2024-11-09 22:22:37,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281757487] [2024-11-09 22:22:37,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:22:37,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 22:22:37,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:22:37,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 22:22:37,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:22:37,654 INFO L87 Difference]: Start difference. First operand 995 states and 1175 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:22:37,984 INFO L93 Difference]: Finished difference Result 1038 states and 1227 transitions. [2024-11-09 22:22:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 22:22:37,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-09 22:22:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:22:37,987 INFO L225 Difference]: With dead ends: 1038 [2024-11-09 22:22:37,987 INFO L226 Difference]: Without dead ends: 964 [2024-11-09 22:22:37,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 133 SyntacticMatches, 10 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:22:37,988 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:22:37,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 221 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:22:37,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2024-11-09 22:22:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 924. [2024-11-09 22:22:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 1.1939328277356447) internal successors, (1102), 923 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1102 transitions. [2024-11-09 22:22:38,251 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1102 transitions. Word has length 69 [2024-11-09 22:22:38,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:22:38,252 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1102 transitions. [2024-11-09 22:22:38,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:38,252 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1102 transitions. [2024-11-09 22:22:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 22:22:38,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:22:38,253 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:22:38,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 22:22:38,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-09 22:22:38,454 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:22:38,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:22:38,454 INFO L85 PathProgramCache]: Analyzing trace with hash 94958199, now seen corresponding path program 14 times [2024-11-09 22:22:38,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:22:38,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357977740] [2024-11-09 22:22:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:22:38,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:22:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:22:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 22:22:38,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:22:38,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357977740] [2024-11-09 22:22:38,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357977740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:22:38,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880601836] [2024-11-09 22:22:38,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:22:38,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:38,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:22:38,728 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:22:38,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-09 22:22:38,779 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:22:38,779 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:22:38,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-09 22:22:38,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:22:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:22:39,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:22:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-09 22:22:39,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880601836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:22:39,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:22:39,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 29, 17] total 48 [2024-11-09 22:22:39,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336176272] [2024-11-09 22:22:39,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:22:39,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-09 22:22:39,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:22:39,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-09 22:22:39,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1889, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 22:22:39,622 INFO L87 Difference]: Start difference. First operand 924 states and 1102 transitions. Second operand has 48 states, 48 states have (on average 2.6666666666666665) internal successors, (128), 48 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:22:45,051 INFO L93 Difference]: Finished difference Result 1577 states and 1859 transitions. [2024-11-09 22:22:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-09 22:22:45,051 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.6666666666666665) internal successors, (128), 48 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-09 22:22:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:22:45,056 INFO L225 Difference]: With dead ends: 1577 [2024-11-09 22:22:45,056 INFO L226 Difference]: Without dead ends: 1379 [2024-11-09 22:22:45,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5565 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2065, Invalid=16025, Unknown=0, NotChecked=0, Total=18090 [2024-11-09 22:22:45,058 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 596 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 2878 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 3382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 2878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:22:45,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 2912 Invalid, 3382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 2878 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 22:22:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2024-11-09 22:22:45,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 918. [2024-11-09 22:22:45,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 1.1842966194111233) internal successors, (1086), 917 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1086 transitions. [2024-11-09 22:22:45,353 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1086 transitions. Word has length 69 [2024-11-09 22:22:45,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:22:45,353 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1086 transitions. [2024-11-09 22:22:45,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.6666666666666665) internal successors, (128), 48 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:22:45,353 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1086 transitions. [2024-11-09 22:22:45,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 22:22:45,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:22:45,355 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:22:45,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-09 22:22:45,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-09 22:22:45,556 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:22:45,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:22:45,556 INFO L85 PathProgramCache]: Analyzing trace with hash 682383560, now seen corresponding path program 15 times [2024-11-09 22:22:45,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:22:45,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686468175] [2024-11-09 22:22:45,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:22:45,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:22:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:22:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 42 proven. 54 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-09 22:22:45,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:22:45,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686468175] [2024-11-09 22:22:45,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686468175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:22:45,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075333545] [2024-11-09 22:22:45,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:22:45,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:22:45,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:22:45,905 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:22:45,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-09 22:22:46,022 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 22:22:46,022 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:22:46,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 22:22:46,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:22:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 24 proven. 60 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-09 22:22:46,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:22:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 24 proven. 60 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-09 22:22:46,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075333545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:22:46,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:22:46,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 21 [2024-11-09 22:22:46,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812335671] [2024-11-09 22:22:46,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:22:46,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 22:22:46,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:22:46,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 22:22:46,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:22:46,432 INFO L87 Difference]: Start difference. First operand 918 states and 1086 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)