./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/zero_sum3.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/array-crafted/zero_sum3.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 d3267df59902b667587c98ecbe021c99cc3d2a5e5866fbd08ee1fb3133370aa4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:12:05,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:12:05,880 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:12:05,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:12:05,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:12:05,919 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:12:05,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:12:05,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:12:05,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:12:05,925 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:12:05,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:12:05,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:12:05,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:12:05,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:12:05,926 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:12:05,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:12:05,928 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:12:05,928 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:12:05,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:12:05,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:12:05,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:12:05,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:12:05,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:12:05,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:12:05,932 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:12:05,933 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:12:05,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:12:05,933 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:12:05,933 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:12:05,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:12:05,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:12:05,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:12:05,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:12:05,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:12:05,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:12:05,935 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:12:05,935 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:12:05,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:12:05,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:12:05,936 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:12:05,936 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:12:05,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:12:05,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3267df59902b667587c98ecbe021c99cc3d2a5e5866fbd08ee1fb3133370aa4 [2024-11-09 18:12:06,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:12:06,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:12:06,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:12:06,242 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:12:06,243 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:12:06,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum3.c [2024-11-09 18:12:07,776 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:12:07,992 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:12:07,993 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum3.c [2024-11-09 18:12:08,000 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743eea867/e6bd2af2f2d0498b979816e54a07ec93/FLAG4474e28bd [2024-11-09 18:12:08,018 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743eea867/e6bd2af2f2d0498b979816e54a07ec93 [2024-11-09 18:12:08,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:12:08,024 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:12:08,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:12:08,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:12:08,033 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:12:08,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aeab216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08, skipping insertion in model container [2024-11-09 18:12:08,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,058 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:12:08,256 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/array-crafted/zero_sum3.c[400,413] [2024-11-09 18:12:08,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:12:08,296 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:12:08,307 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/array-crafted/zero_sum3.c[400,413] [2024-11-09 18:12:08,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:12:08,339 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:12:08,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08 WrapperNode [2024-11-09 18:12:08,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:12:08,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:12:08,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:12:08,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:12:08,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,372 INFO L138 Inliner]: procedures = 15, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 101 [2024-11-09 18:12:08,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:12:08,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:12:08,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:12:08,374 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:12:08,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,402 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 18:12:08,402 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,402 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,408 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,408 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:12:08,414 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:12:08,414 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:12:08,414 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:12:08,415 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (1/1) ... [2024-11-09 18:12:08,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:12:08,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:08,449 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 18:12:08,451 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 18:12:08,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:12:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:12:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:12:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:12:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:12:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:12:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:12:08,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:12:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:12:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:12:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:12:08,574 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:12:08,577 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:12:08,789 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-09 18:12:08,789 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:12:08,800 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:12:08,801 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:12:08,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:12:08 BoogieIcfgContainer [2024-11-09 18:12:08,803 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:12:08,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:12:08,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:12:08,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:12:08,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:12:08" (1/3) ... [2024-11-09 18:12:08,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d05f8ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:12:08, skipping insertion in model container [2024-11-09 18:12:08,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:08" (2/3) ... [2024-11-09 18:12:08,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d05f8ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:12:08, skipping insertion in model container [2024-11-09 18:12:08,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:12:08" (3/3) ... [2024-11-09 18:12:08,814 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum3.c [2024-11-09 18:12:08,830 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:12:08,830 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:12:08,884 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:12:08,890 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;@52f8d698, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:12:08,890 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:12:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 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 18:12:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 18:12:08,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:08,899 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:08,900 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:08,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1617069078, now seen corresponding path program 1 times [2024-11-09 18:12:08,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:08,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128878337] [2024-11-09 18:12:08,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:08,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:09,054 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 18:12:09,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:09,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128878337] [2024-11-09 18:12:09,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128878337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:12:09,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:12:09,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:12:09,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870125985] [2024-11-09 18:12:09,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:12:09,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:12:09,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:09,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:12:09,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:12:09,094 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 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) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 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 18:12:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:09,107 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2024-11-09 18:12:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:12:09,110 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 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 20 [2024-11-09 18:12:09,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:09,116 INFO L225 Difference]: With dead ends: 62 [2024-11-09 18:12:09,116 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 18:12:09,119 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 18:12:09,122 INFO L432 NwaCegarLoop]: 40 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, 40 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 18:12:09,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:12:09,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 18:12:09,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-09 18:12:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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 18:12:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-09 18:12:09,149 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 20 [2024-11-09 18:12:09,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:09,150 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-09 18:12:09,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 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 18:12:09,150 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-09 18:12:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:12:09,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:09,151 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:09,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:12:09,152 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:09,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:09,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1488502304, now seen corresponding path program 1 times [2024-11-09 18:12:09,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:09,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712616003] [2024-11-09 18:12:09,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:09,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:09,379 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 18:12:09,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:09,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712616003] [2024-11-09 18:12:09,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712616003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:12:09,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:12:09,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:12:09,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596061478] [2024-11-09 18:12:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:12:09,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:12:09,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:09,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:12:09,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:12:09,389 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 18:12:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:09,443 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2024-11-09 18:12:09,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:12:09,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 18:12:09,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:09,444 INFO L225 Difference]: With dead ends: 53 [2024-11-09 18:12:09,445 INFO L226 Difference]: Without dead ends: 30 [2024-11-09 18:12:09,445 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 18:12:09,446 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:09,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:12:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-09 18:12:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-09 18:12:09,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 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 18:12:09,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-09 18:12:09,453 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 27 [2024-11-09 18:12:09,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:09,454 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-09 18:12:09,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 18:12:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-09 18:12:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 18:12:09,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:09,455 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:09,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:12:09,455 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:09,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:09,457 INFO L85 PathProgramCache]: Analyzing trace with hash -631137985, now seen corresponding path program 1 times [2024-11-09 18:12:09,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:09,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83490174] [2024-11-09 18:12:09,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:09,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:12:09,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:09,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83490174] [2024-11-09 18:12:09,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83490174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:12:09,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:12:09,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:12:09,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311478339] [2024-11-09 18:12:09,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:12:09,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:12:09,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:09,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:12:09,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:12:09,587 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 18:12:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:09,667 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2024-11-09 18:12:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:12:09,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 29 [2024-11-09 18:12:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:09,668 INFO L225 Difference]: With dead ends: 62 [2024-11-09 18:12:09,668 INFO L226 Difference]: Without dead ends: 42 [2024-11-09 18:12:09,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:12:09,670 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:09,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 31 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-09 18:12:09,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-09 18:12:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 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 18:12:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-09 18:12:09,687 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 29 [2024-11-09 18:12:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:09,687 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-09 18:12:09,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 18:12:09,688 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-09 18:12:09,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 18:12:09,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:09,690 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:09,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:12:09,690 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:09,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:09,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1028766657, now seen corresponding path program 1 times [2024-11-09 18:12:09,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:09,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025461875] [2024-11-09 18:12:09,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:09,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:09,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:09,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025461875] [2024-11-09 18:12:09,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025461875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:09,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763656077] [2024-11-09 18:12:09,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:09,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:09,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:09,873 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 18:12:09,874 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 18:12:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:09,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:12:09,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:10,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:12:10,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763656077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:10,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:10,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 18:12:10,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697425842] [2024-11-09 18:12:10,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:10,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:12:10,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:10,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:12:10,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:12:10,099 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 18:12:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:10,177 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2024-11-09 18:12:10,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:12:10,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 18:12:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:10,178 INFO L225 Difference]: With dead ends: 79 [2024-11-09 18:12:10,179 INFO L226 Difference]: Without dead ends: 44 [2024-11-09 18:12:10,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:12:10,181 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:10,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-09 18:12:10,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-09 18:12:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 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 18:12:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2024-11-09 18:12:10,189 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 41 [2024-11-09 18:12:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:10,190 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2024-11-09 18:12:10,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 18:12:10,190 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2024-11-09 18:12:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 18:12:10,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:10,192 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:10,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:10,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:10,394 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:10,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:10,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1775290718, now seen corresponding path program 2 times [2024-11-09 18:12:10,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:10,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510998571] [2024-11-09 18:12:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 18:12:10,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:10,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510998571] [2024-11-09 18:12:10,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510998571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:10,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11237296] [2024-11-09 18:12:10,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:12:10,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:10,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:10,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:12:10,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:12:10,633 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:12:10,634 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:10,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:12:10,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 18:12:10,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 18:12:10,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11237296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:10,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:10,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-09 18:12:10,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813461788] [2024-11-09 18:12:10,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:10,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 18:12:10,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:10,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 18:12:10,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:12:10,883 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 18:12:10,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:10,986 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2024-11-09 18:12:10,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 18:12:10,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 18:12:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:10,990 INFO L225 Difference]: With dead ends: 86 [2024-11-09 18:12:10,990 INFO L226 Difference]: Without dead ends: 56 [2024-11-09 18:12:10,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:12:10,992 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:10,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 65 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:10,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-09 18:12:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-09 18:12:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 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 18:12:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-11-09 18:12:11,007 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 43 [2024-11-09 18:12:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:11,008 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-11-09 18:12:11,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 18:12:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-11-09 18:12:11,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 18:12:11,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:11,013 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:11,031 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 18:12:11,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:11,218 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:11,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1971745886, now seen corresponding path program 3 times [2024-11-09 18:12:11,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:11,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483482272] [2024-11-09 18:12:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:11,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:13,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:13,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483482272] [2024-11-09 18:12:13,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483482272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:13,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122772657] [2024-11-09 18:12:13,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:12:13,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:13,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:13,462 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 18:12:13,469 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 18:12:13,550 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:12:13,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:13,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-09 18:12:13,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:13,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:12:14,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:12:14,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 18:12:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:12:14,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:12:14,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122772657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:14,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:14,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 12] total 29 [2024-11-09 18:12:14,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607786851] [2024-11-09 18:12:14,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:14,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 18:12:14,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:14,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 18:12:14,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2024-11-09 18:12:14,850 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 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 18:12:15,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:15,468 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2024-11-09 18:12:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 18:12:15,469 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 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 55 [2024-11-09 18:12:15,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:15,470 INFO L225 Difference]: With dead ends: 98 [2024-11-09 18:12:15,470 INFO L226 Difference]: Without dead ends: 93 [2024-11-09 18:12:15,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 18:12:15,471 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:15,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 494 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:12:15,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-09 18:12:15,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2024-11-09 18:12:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 88 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 18:12:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2024-11-09 18:12:15,486 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 55 [2024-11-09 18:12:15,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:15,486 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2024-11-09 18:12:15,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 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 18:12:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2024-11-09 18:12:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 18:12:15,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:15,488 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:15,505 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 18:12:15,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:15,689 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:15,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:15,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1231652865, now seen corresponding path program 4 times [2024-11-09 18:12:15,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:15,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945348855] [2024-11-09 18:12:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:15,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:12:15,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:15,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945348855] [2024-11-09 18:12:15,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945348855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:15,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959602864] [2024-11-09 18:12:15,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:12:15,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:15,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:15,824 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 18:12:15,826 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 18:12:15,888 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:12:15,889 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:15,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:12:15,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:12:15,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:12:16,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959602864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:16,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:16,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-09 18:12:16,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192542430] [2024-11-09 18:12:16,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:16,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 18:12:16,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:16,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 18:12:16,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:12:16,091 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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 18:12:16,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:16,526 INFO L93 Difference]: Finished difference Result 189 states and 216 transitions. [2024-11-09 18:12:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 18:12:16,527 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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 18:12:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:16,528 INFO L225 Difference]: With dead ends: 189 [2024-11-09 18:12:16,531 INFO L226 Difference]: Without dead ends: 105 [2024-11-09 18:12:16,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 100 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2024-11-09 18:12:16,532 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 101 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:16,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 444 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:12:16,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-09 18:12:16,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2024-11-09 18:12:16,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.120879120879121) internal successors, (102), 91 states have internal predecessors, (102), 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 18:12:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2024-11-09 18:12:16,551 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 57 [2024-11-09 18:12:16,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:16,552 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2024-11-09 18:12:16,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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 18:12:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2024-11-09 18:12:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 18:12:16,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:16,555 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:16,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:12:16,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:16,757 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:16,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:16,758 INFO L85 PathProgramCache]: Analyzing trace with hash -934039268, now seen corresponding path program 5 times [2024-11-09 18:12:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:16,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784328886] [2024-11-09 18:12:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:16,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 18:12:16,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:16,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784328886] [2024-11-09 18:12:16,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784328886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:16,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146024833] [2024-11-09 18:12:16,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:12:16,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:16,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:16,893 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 18:12:16,895 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 18:12:16,970 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 18:12:16,970 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:16,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:12:16,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 18:12:17,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:12:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 18:12:17,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146024833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:12:17,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:12:17,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:12:17,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804944402] [2024-11-09 18:12:17,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:12:17,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:12:17,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:12:17,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:12:17,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:12:17,128 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 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 18:12:17,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:12:17,247 INFO L93 Difference]: Finished difference Result 135 states and 149 transitions. [2024-11-09 18:12:17,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 18:12:17,248 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 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 59 [2024-11-09 18:12:17,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:12:17,250 INFO L225 Difference]: With dead ends: 135 [2024-11-09 18:12:17,250 INFO L226 Difference]: Without dead ends: 70 [2024-11-09 18:12:17,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 107 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:12:17,251 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 63 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:12:17,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 119 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:12:17,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-09 18:12:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-09 18:12:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 69 states have internal predecessors, (76), 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 18:12:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2024-11-09 18:12:17,264 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 59 [2024-11-09 18:12:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:12:17,265 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2024-11-09 18:12:17,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 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 18:12:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2024-11-09 18:12:17,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 18:12:17,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:12:17,266 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:12:17,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 18:12:17,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:17,471 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:12:17,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:12:17,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2144648643, now seen corresponding path program 6 times [2024-11-09 18:12:17,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:12:17,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547110137] [2024-11-09 18:12:17,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:12:17,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:12:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:12:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:20,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:12:20,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547110137] [2024-11-09 18:12:20,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547110137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:12:20,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485463208] [2024-11-09 18:12:20,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:12:20,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:12:20,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:12:20,427 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 18:12:20,429 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 18:12:20,518 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 18:12:20,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:12:20,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-09 18:12:20,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:12:26,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:12:26,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:12:26,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 33 [2024-11-09 18:12:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:12:26,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:00,781 INFO L349 Elim1Store]: treesize reduction 10, result has 92.0 percent of original size [2024-11-09 18:13:00,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 125 [2024-11-09 18:13:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:03,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485463208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:03,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:03,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 36, 31] total 88 [2024-11-09 18:13:03,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578330253] [2024-11-09 18:13:03,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:03,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-09 18:13:03,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:03,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-09 18:13:03,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=613, Invalid=7035, Unknown=8, NotChecked=0, Total=7656 [2024-11-09 18:13:03,285 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 88 states, 88 states have (on average 2.2386363636363638) internal successors, (197), 88 states have internal predecessors, (197), 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 18:13:06,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:06,052 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2024-11-09 18:13:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 18:13:06,053 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.2386363636363638) internal successors, (197), 88 states have internal predecessors, (197), 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 18:13:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:06,054 INFO L225 Difference]: With dead ends: 133 [2024-11-09 18:13:06,054 INFO L226 Difference]: Without dead ends: 128 [2024-11-09 18:13:06,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 3696 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=835, Invalid=9057, Unknown=8, NotChecked=0, Total=9900 [2024-11-09 18:13:06,058 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 124 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:06,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1180 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 18:13:06,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-09 18:13:06,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2024-11-09 18:13:06,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.115702479338843) internal successors, (135), 121 states have internal predecessors, (135), 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 18:13:06,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2024-11-09 18:13:06,085 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 69 [2024-11-09 18:13:06,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:06,086 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2024-11-09 18:13:06,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.2386363636363638) internal successors, (197), 88 states have internal predecessors, (197), 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 18:13:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2024-11-09 18:13:06,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 18:13:06,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:06,087 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:06,104 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 18:13:06,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:06,288 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:06,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:06,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1796072420, now seen corresponding path program 7 times [2024-11-09 18:13:06,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:06,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994967640] [2024-11-09 18:13:06,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:06,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:13:06,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:06,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994967640] [2024-11-09 18:13:06,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994967640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:06,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980764265] [2024-11-09 18:13:06,473 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:13:06,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:06,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:06,475 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 18:13:06,476 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 18:13:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:06,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:13:06,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:13:06,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 18:13:06,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980764265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:06,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:06,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:13:06,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964160706] [2024-11-09 18:13:06,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:06,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:13:06,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:06,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:13:06,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:13:06,839 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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 18:13:07,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:07,036 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2024-11-09 18:13:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:13:07,037 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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 71 [2024-11-09 18:13:07,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:07,038 INFO L225 Difference]: With dead ends: 251 [2024-11-09 18:13:07,038 INFO L226 Difference]: Without dead ends: 113 [2024-11-09 18:13:07,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 129 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:13:07,039 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 35 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:07,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 236 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:13:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-09 18:13:07,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-09 18:13:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.1071428571428572) internal successors, (124), 112 states have internal predecessors, (124), 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 18:13:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2024-11-09 18:13:07,061 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 71 [2024-11-09 18:13:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:07,062 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2024-11-09 18:13:07,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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 18:13:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2024-11-09 18:13:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 18:13:07,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:07,063 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:07,081 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 18:13:07,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:07,265 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:07,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2112898429, now seen corresponding path program 8 times [2024-11-09 18:13:07,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:07,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183555088] [2024-11-09 18:13:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:07,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 18:13:07,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:07,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183555088] [2024-11-09 18:13:07,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183555088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:07,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981778913] [2024-11-09 18:13:07,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:13:07,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:07,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:07,418 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 18:13:07,420 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 18:13:07,493 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:13:07,493 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:07,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:13:07,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 18:13:07,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 18:13:07,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981778913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:07,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:07,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-09 18:13:07,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896048926] [2024-11-09 18:13:07,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:07,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:13:07,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:07,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:13:07,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:13:07,719 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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 18:13:07,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:07,856 INFO L93 Difference]: Finished difference Result 166 states and 186 transitions. [2024-11-09 18:13:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 18:13:07,857 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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 73 [2024-11-09 18:13:07,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:07,858 INFO L225 Difference]: With dead ends: 166 [2024-11-09 18:13:07,858 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 18:13:07,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 132 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:13:07,859 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 69 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:07,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 127 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:13:07,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 18:13:07,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-09 18:13:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0843373493975903) internal successors, (90), 83 states have internal predecessors, (90), 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 18:13:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2024-11-09 18:13:07,866 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 73 [2024-11-09 18:13:07,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:07,866 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2024-11-09 18:13:07,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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 18:13:07,867 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2024-11-09 18:13:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-09 18:13:07,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:07,867 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:07,884 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 18:13:08,068 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,SelfDestructingSolverStorable10 [2024-11-09 18:13:08,068 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:08,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash 651435484, now seen corresponding path program 9 times [2024-11-09 18:13:08,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:08,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358313808] [2024-11-09 18:13:08,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:08,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:11,795 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:11,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:11,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358313808] [2024-11-09 18:13:11,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358313808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:11,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390078276] [2024-11-09 18:13:11,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:13:11,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:11,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:11,798 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 18:13:11,799 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 18:13:11,892 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 18:13:11,892 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:11,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-09 18:13:11,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:11,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:13,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:13:13,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:13:13,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 33 [2024-11-09 18:13:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:13,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:13:14,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390078276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:14,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:14,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 22, 16] total 63 [2024-11-09 18:13:14,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108683468] [2024-11-09 18:13:14,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:14,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-09 18:13:14,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:14,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-09 18:13:14,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3601, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 18:13:14,135 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 63 states, 63 states have (on average 3.5555555555555554) internal successors, (224), 63 states have internal predecessors, (224), 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 18:13:18,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:18,150 INFO L93 Difference]: Finished difference Result 283 states and 313 transitions. [2024-11-09 18:13:18,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 18:13:18,151 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.5555555555555554) internal successors, (224), 63 states have internal predecessors, (224), 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 83 [2024-11-09 18:13:18,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:18,152 INFO L225 Difference]: With dead ends: 283 [2024-11-09 18:13:18,152 INFO L226 Difference]: Without dead ends: 276 [2024-11-09 18:13:18,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1705 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=785, Invalid=6871, Unknown=0, NotChecked=0, Total=7656 [2024-11-09 18:13:18,155 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 738 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 3705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:18,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 2491 Invalid, 3705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 18:13:18,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-09 18:13:18,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 168. [2024-11-09 18:13:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.095808383233533) internal successors, (183), 167 states have internal predecessors, (183), 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 18:13:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 183 transitions. [2024-11-09 18:13:18,177 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 183 transitions. Word has length 83 [2024-11-09 18:13:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:18,177 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 183 transitions. [2024-11-09 18:13:18,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.5555555555555554) internal successors, (224), 63 states have internal predecessors, (224), 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 18:13:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 183 transitions. [2024-11-09 18:13:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 18:13:18,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:18,179 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:18,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 18:13:18,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:18,379 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:18,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:18,380 INFO L85 PathProgramCache]: Analyzing trace with hash 886213627, now seen corresponding path program 10 times [2024-11-09 18:13:18,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:18,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891094326] [2024-11-09 18:13:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:18,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 18:13:18,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:18,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891094326] [2024-11-09 18:13:18,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891094326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:18,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751897032] [2024-11-09 18:13:18,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:13:18,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:18,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:18,563 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 18:13:18,565 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 18:13:18,639 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:13:18,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:18,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:13:18,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 18:13:18,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 18:13:19,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751897032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:19,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:19,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-09 18:13:19,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824861725] [2024-11-09 18:13:19,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:19,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 18:13:19,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:19,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 18:13:19,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:13:19,009 INFO L87 Difference]: Start difference. First operand 168 states and 183 transitions. Second operand has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 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 18:13:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:19,264 INFO L93 Difference]: Finished difference Result 321 states and 353 transitions. [2024-11-09 18:13:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 18:13:19,265 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 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 85 [2024-11-09 18:13:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:19,266 INFO L225 Difference]: With dead ends: 321 [2024-11-09 18:13:19,266 INFO L226 Difference]: Without dead ends: 98 [2024-11-09 18:13:19,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 150 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2024-11-09 18:13:19,267 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 134 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:19,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 327 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:13:19,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-09 18:13:19,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-09 18:13:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 97 states have internal predecessors, (104), 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 18:13:19,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2024-11-09 18:13:19,283 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 85 [2024-11-09 18:13:19,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:19,283 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2024-11-09 18:13:19,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 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 18:13:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2024-11-09 18:13:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 18:13:19,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:19,284 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:19,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 18:13:19,488 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,SelfDestructingSolverStorable12 [2024-11-09 18:13:19,489 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:19,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:19,489 INFO L85 PathProgramCache]: Analyzing trace with hash -661358789, now seen corresponding path program 11 times [2024-11-09 18:13:19,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:19,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567037125] [2024-11-09 18:13:19,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:19,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 6 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:24,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567037125] [2024-11-09 18:13:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567037125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999693181] [2024-11-09 18:13:24,376 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:13:24,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:24,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:24,377 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 18:13:24,378 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 18:13:24,672 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 18:13:24,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:24,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 143 conjuncts are in the unsatisfiable core [2024-11-09 18:13:24,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:24,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:24,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:24,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:13:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:13:25,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 18:13:26,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999693181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:26,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:26,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 21, 15] total 64 [2024-11-09 18:13:26,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152621226] [2024-11-09 18:13:26,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:26,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-09 18:13:26,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:26,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-09 18:13:26,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=3788, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 18:13:26,268 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 64 states, 64 states have (on average 3.875) internal successors, (248), 64 states have internal predecessors, (248), 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 18:13:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:13:28,497 INFO L93 Difference]: Finished difference Result 235 states and 256 transitions. [2024-11-09 18:13:28,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 18:13:28,498 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.875) internal successors, (248), 64 states have internal predecessors, (248), 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 97 [2024-11-09 18:13:28,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:13:28,499 INFO L225 Difference]: With dead ends: 235 [2024-11-09 18:13:28,499 INFO L226 Difference]: Without dead ends: 230 [2024-11-09 18:13:28,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1880 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=544, Invalid=6938, Unknown=0, NotChecked=0, Total=7482 [2024-11-09 18:13:28,502 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 291 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:13:28,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 1486 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 18:13:28,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-09 18:13:28,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 142. [2024-11-09 18:13:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.0780141843971631) internal successors, (152), 141 states have internal predecessors, (152), 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 18:13:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2024-11-09 18:13:28,535 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 97 [2024-11-09 18:13:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:13:28,535 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2024-11-09 18:13:28,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.875) internal successors, (248), 64 states have internal predecessors, (248), 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 18:13:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2024-11-09 18:13:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 18:13:28,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:13:28,536 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:13:28,549 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 18:13:28,737 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,SelfDestructingSolverStorable13 [2024-11-09 18:13:28,737 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:13:28,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:13:28,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2011302298, now seen corresponding path program 12 times [2024-11-09 18:13:28,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:13:28,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378634590] [2024-11-09 18:13:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:13:28,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:13:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:13:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 32 proven. 40 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 18:13:29,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:13:29,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378634590] [2024-11-09 18:13:29,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378634590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:13:29,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909365953] [2024-11-09 18:13:29,003 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:13:29,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:13:29,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:13:29,005 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 18:13:29,007 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 18:13:29,109 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 18:13:29,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:13:29,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 18:13:29,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:13:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 18:13:29,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:13:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 18:13:29,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909365953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:13:29,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:13:29,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 28 [2024-11-09 18:13:29,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779603173] [2024-11-09 18:13:29,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:13:29,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 18:13:29,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:13:29,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 18:13:29,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2024-11-09 18:13:29,505 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand has 28 states, 28 states have (on average 3.25) internal successors, (91), 28 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)