./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrnlen-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrnlen-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a39001d729fceb66f0e568e2a46f4a77a12199478b1f9dfc07eb9a8b83cb9478 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:04:30,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:04:30,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-21 21:04:30,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:04:30,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:04:30,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:04:30,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:04:30,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:04:30,213 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:04:30,218 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:04:30,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:04:30,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:04:30,221 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:04:30,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:04:30,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:04:30,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:04:30,225 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 21:04:30,225 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 21:04:30,226 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 21:04:30,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:04:30,227 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 21:04:30,228 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:04:30,228 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:04:30,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:04:30,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:04:30,230 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:04:30,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:04:30,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:04:30,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:04:30,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:04:30,234 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:04:30,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:04:30,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:04:30,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:04:30,235 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:04:30,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:04:30,236 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a39001d729fceb66f0e568e2a46f4a77a12199478b1f9dfc07eb9a8b83cb9478 [2023-11-21 21:04:30,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:04:30,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:04:30,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:04:30,525 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:04:30,526 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:04:30,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrnlen-alloca-2.i [2023-11-21 21:04:33,592 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:04:33,834 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:04:33,836 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrnlen-alloca-2.i [2023-11-21 21:04:33,851 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/data/bc951369c/b774d7cd311e4ce3884a16d00cba8ca6/FLAGe3e016bfd [2023-11-21 21:04:33,866 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/data/bc951369c/b774d7cd311e4ce3884a16d00cba8ca6 [2023-11-21 21:04:33,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:04:33,871 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:04:33,873 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:04:33,873 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:04:33,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:04:33,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:04:33" (1/1) ... [2023-11-21 21:04:33,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d754939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:33, skipping insertion in model container [2023-11-21 21:04:33,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:04:33" (1/1) ... [2023-11-21 21:04:33,935 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:04:34,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:04:34,304 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:04:34,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:04:34,379 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:04:34,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34 WrapperNode [2023-11-21 21:04:34,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:04:34,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:04:34,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:04:34,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:04:34,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,425 INFO L138 Inliner]: procedures = 111, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2023-11-21 21:04:34,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:04:34,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:04:34,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:04:34,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:04:34,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,449 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:04:34,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:04:34,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:04:34,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:04:34,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:04:34,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:04:34,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:04:34,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:04:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 21:04:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 21:04:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:04:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:04:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:04:34,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:04:34,655 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:04:34,657 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:04:34,841 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:04:34,962 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:04:34,962 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 21:04:34,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:34 BoogieIcfgContainer [2023-11-21 21:04:34,964 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:04:34,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:04:34,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:04:34,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:04:34,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:04:33" (1/3) ... [2023-11-21 21:04:34,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecb53f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:04:34, skipping insertion in model container [2023-11-21 21:04:34,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34" (2/3) ... [2023-11-21 21:04:34,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecb53f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:04:34, skipping insertion in model container [2023-11-21 21:04:34,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:34" (3/3) ... [2023-11-21 21:04:34,980 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrnlen-alloca-2.i [2023-11-21 21:04:35,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:04:35,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-21 21:04:35,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:04:35,064 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5d77777b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:04:35,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 21:04:35,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 2.0) internal successors, (16), 13 states have internal predecessors, (16), 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) [2023-11-21 21:04:35,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 21:04:35,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:35,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 21:04:35,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 21:04:35,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:35,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2869, now seen corresponding path program 1 times [2023-11-21 21:04:35,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:35,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315157277] [2023-11-21 21:04:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:35,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:35,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:35,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315157277] [2023-11-21 21:04:35,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315157277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:35,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:35,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:04:35,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832894163] [2023-11-21 21:04:35,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:35,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:04:35,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:35,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:04:35,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:04:35,451 INFO L87 Difference]: Start difference. First operand has 14 states, 8 states have (on average 2.0) internal successors, (16), 13 states have internal predecessors, (16), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 21:04:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:35,488 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2023-11-21 21:04:35,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:04:35,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-21 21:04:35,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:35,499 INFO L225 Difference]: With dead ends: 13 [2023-11-21 21:04:35,499 INFO L226 Difference]: Without dead ends: 12 [2023-11-21 21:04:35,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:04:35,505 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:35,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 21:04:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-21 21:04:35,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-21 21:04:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.625) internal successors, (13), 11 states have internal predecessors, (13), 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) [2023-11-21 21:04:35,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-11-21 21:04:35,539 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 2 [2023-11-21 21:04:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:35,539 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-21 21:04:35,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 21:04:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-11-21 21:04:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 21:04:35,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:35,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 21:04:35,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:04:35,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 21:04:35,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:35,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2870, now seen corresponding path program 1 times [2023-11-21 21:04:35,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:35,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647181019] [2023-11-21 21:04:35,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:35,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:35,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:35,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647181019] [2023-11-21 21:04:35,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647181019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:35,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:35,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:04:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478956847] [2023-11-21 21:04:35,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:35,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:04:35,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:35,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:04:35,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:04:35,837 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 21:04:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:35,855 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2023-11-21 21:04:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:04:35,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-21 21:04:35,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:35,858 INFO L225 Difference]: With dead ends: 11 [2023-11-21 21:04:35,858 INFO L226 Difference]: Without dead ends: 11 [2023-11-21 21:04:35,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:04:35,864 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:35,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 6 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 21:04:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-11-21 21:04:35,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-11-21 21:04:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-11-21 21:04:35,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 2 [2023-11-21 21:04:35,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:35,874 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-11-21 21:04:35,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 21:04:35,874 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-11-21 21:04:35,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 21:04:35,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:35,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 21:04:35,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:04:35,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 21:04:35,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:35,878 INFO L85 PathProgramCache]: Analyzing trace with hash 86625374, now seen corresponding path program 1 times [2023-11-21 21:04:35,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:35,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235798255] [2023-11-21 21:04:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:35,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:36,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:36,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235798255] [2023-11-21 21:04:36,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235798255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:36,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:36,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:04:36,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932241407] [2023-11-21 21:04:36,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:36,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:04:36,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:36,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:04:36,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:04:36,022 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-21 21:04:36,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:36,045 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2023-11-21 21:04:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:04:36,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-21 21:04:36,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:36,047 INFO L225 Difference]: With dead ends: 10 [2023-11-21 21:04:36,047 INFO L226 Difference]: Without dead ends: 10 [2023-11-21 21:04:36,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:04:36,056 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:36,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 21:04:36,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-21 21:04:36,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-21 21:04:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) [2023-11-21 21:04:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-11-21 21:04:36,063 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2023-11-21 21:04:36,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:36,064 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-11-21 21:04:36,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-21 21:04:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-11-21 21:04:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 21:04:36,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:36,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 21:04:36,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:04:36,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 21:04:36,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:36,075 INFO L85 PathProgramCache]: Analyzing trace with hash 86625375, now seen corresponding path program 1 times [2023-11-21 21:04:36,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:36,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119653256] [2023-11-21 21:04:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:36,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:36,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:36,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119653256] [2023-11-21 21:04:36,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119653256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:36,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:36,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:04:36,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665655857] [2023-11-21 21:04:36,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:36,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:04:36,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:36,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:04:36,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:04:36,483 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-21 21:04:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:36,532 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2023-11-21 21:04:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:04:36,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-21 21:04:36,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:36,534 INFO L225 Difference]: With dead ends: 15 [2023-11-21 21:04:36,534 INFO L226 Difference]: Without dead ends: 15 [2023-11-21 21:04:36,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:04:36,536 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:36,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 21:04:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-21 21:04:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2023-11-21 21:04:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2023-11-21 21:04:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-11-21 21:04:36,541 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 5 [2023-11-21 21:04:36,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:36,541 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-21 21:04:36,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-21 21:04:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-11-21 21:04:36,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 21:04:36,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:36,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:04:36,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 21:04:36,543 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 21:04:36,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:36,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1642793946, now seen corresponding path program 1 times [2023-11-21 21:04:36,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:36,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220065907] [2023-11-21 21:04:36,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:36,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:36,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:36,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220065907] [2023-11-21 21:04:36,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220065907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:36,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:36,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:04:36,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457457664] [2023-11-21 21:04:36,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:36,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:04:36,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:36,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:04:36,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:04:36,760 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-21 21:04:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:36,842 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-11-21 21:04:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:04:36,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2023-11-21 21:04:36,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:36,845 INFO L225 Difference]: With dead ends: 15 [2023-11-21 21:04:36,846 INFO L226 Difference]: Without dead ends: 15 [2023-11-21 21:04:36,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:04:36,847 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:36,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 10 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 21:04:36,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-21 21:04:36,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2023-11-21 21:04:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-11-21 21:04:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-11-21 21:04:36,851 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2023-11-21 21:04:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:36,852 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-11-21 21:04:36,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-21 21:04:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-11-21 21:04:36,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 21:04:36,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:36,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:04:36,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 21:04:36,854 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 21:04:36,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash -617957596, now seen corresponding path program 1 times [2023-11-21 21:04:36,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:36,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059237356] [2023-11-21 21:04:36,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:36,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:36,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:36,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059237356] [2023-11-21 21:04:36,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059237356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:36,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:36,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:04:36,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162205792] [2023-11-21 21:04:36,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:36,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:04:36,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:04:36,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:04:36,994 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-21 21:04:37,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:37,014 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2023-11-21 21:04:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:04:37,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-21 21:04:37,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:37,016 INFO L225 Difference]: With dead ends: 12 [2023-11-21 21:04:37,016 INFO L226 Difference]: Without dead ends: 10 [2023-11-21 21:04:37,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:04:37,018 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:37,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 21:04:37,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-21 21:04:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-21 21:04:37,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2023-11-21 21:04:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-11-21 21:04:37,029 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2023-11-21 21:04:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:37,029 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-11-21 21:04:37,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-21 21:04:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-11-21 21:04:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 21:04:37,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:37,030 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-21 21:04:37,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 21:04:37,031 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 21:04:37,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:37,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1976399871, now seen corresponding path program 1 times [2023-11-21 21:04:37,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:37,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713795965] [2023-11-21 21:04:37,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:37,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:37,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:37,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713795965] [2023-11-21 21:04:37,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713795965] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:04:37,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692515668] [2023-11-21 21:04:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:37,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:04:37,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:04:37,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:04:37,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 21:04:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:37,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-21 21:04:37,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:04:37,592 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 14 treesize of output 10 [2023-11-21 21:04:37,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 21:04:37,756 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 32 treesize of output 29 [2023-11-21 21:04:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:37,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:04:37,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-11-21 21:04:38,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-21 21:04:38,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-21 21:04:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:38,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692515668] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:04:38,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:04:38,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-21 21:04:38,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758336442] [2023-11-21 21:04:38,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:04:38,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 21:04:38,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:38,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 21:04:38,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:04:38,029 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2023-11-21 21:04:38,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:38,249 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2023-11-21 21:04:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 21:04:38,249 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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 9 [2023-11-21 21:04:38,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:38,250 INFO L225 Difference]: With dead ends: 22 [2023-11-21 21:04:38,250 INFO L226 Difference]: Without dead ends: 22 [2023-11-21 21:04:38,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-11-21 21:04:38,252 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 33 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:38,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 18 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 21:04:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-21 21:04:38,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 14. [2023-11-21 21:04:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2023-11-21 21:04:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-11-21 21:04:38,256 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2023-11-21 21:04:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:38,256 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-11-21 21:04:38,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2023-11-21 21:04:38,257 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-11-21 21:04:38,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 21:04:38,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:38,257 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2023-11-21 21:04:38,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 21:04:38,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-21 21:04:38,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 21:04:38,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:38,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1622105437, now seen corresponding path program 2 times [2023-11-21 21:04:38,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:38,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285645943] [2023-11-21 21:04:38,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:38,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:39,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:39,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285645943] [2023-11-21 21:04:39,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285645943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:04:39,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888949472] [2023-11-21 21:04:39,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 21:04:39,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:04:39,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:04:39,123 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:04:39,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 21:04:39,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 21:04:39,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:04:39,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-21 21:04:39,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:04:39,241 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 13 treesize of output 9 [2023-11-21 21:04:39,576 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2023-11-21 21:04:39,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 33 [2023-11-21 21:04:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:39,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:04:39,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-11-21 21:04:39,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-11-21 21:04:39,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2023-11-21 21:04:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:39,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888949472] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:04:39,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:04:39,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-11-21 21:04:39,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219104772] [2023-11-21 21:04:39,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:04:39,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-21 21:04:39,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-21 21:04:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-11-21 21:04:39,993 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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) [2023-11-21 21:04:41,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:41,210 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2023-11-21 21:04:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-21 21:04:41,211 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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 13 [2023-11-21 21:04:41,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:41,217 INFO L225 Difference]: With dead ends: 49 [2023-11-21 21:04:41,217 INFO L226 Difference]: Without dead ends: 49 [2023-11-21 21:04:41,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=397, Invalid=1325, Unknown=0, NotChecked=0, Total=1722 [2023-11-21 21:04:41,220 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 137 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:41,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 49 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 21:04:41,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-21 21:04:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 22. [2023-11-21 21:04:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2023-11-21 21:04:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-11-21 21:04:41,232 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2023-11-21 21:04:41,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:41,232 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-11-21 21:04:41,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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) [2023-11-21 21:04:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-11-21 21:04:41,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-21 21:04:41,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:41,233 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1] [2023-11-21 21:04:41,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 21:04:41,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:04:41,450 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 21:04:41,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:41,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1803566957, now seen corresponding path program 1 times [2023-11-21 21:04:41,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:41,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250977152] [2023-11-21 21:04:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:41,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 21:04:41,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:41,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250977152] [2023-11-21 21:04:41,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250977152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:41,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:41,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:04:41,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761251704] [2023-11-21 21:04:41,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:41,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:04:41,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:41,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:04:41,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:04:41,481 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-21 21:04:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:41,502 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-11-21 21:04:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:04:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 [2023-11-21 21:04:41,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:41,504 INFO L225 Difference]: With dead ends: 23 [2023-11-21 21:04:41,504 INFO L226 Difference]: Without dead ends: 22 [2023-11-21 21:04:41,505 INFO L412 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 [2023-11-21 21:04:41,507 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:41,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 21:04:41,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-21 21:04:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-21 21:04:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:04:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2023-11-21 21:04:41,515 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2023-11-21 21:04:41,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:41,515 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2023-11-21 21:04:41,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-21 21:04:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2023-11-21 21:04:41,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-21 21:04:41,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:41,516 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1] [2023-11-21 21:04:41,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 21:04:41,517 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 21:04:41,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:41,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1248785639, now seen corresponding path program 3 times [2023-11-21 21:04:41,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:41,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239700911] [2023-11-21 21:04:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:41,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:42,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:42,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239700911] [2023-11-21 21:04:42,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239700911] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:04:42,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285906387] [2023-11-21 21:04:42,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 21:04:42,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:04:42,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:04:42,323 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:04:42,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 21:04:42,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-21 21:04:42,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:04:42,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-21 21:04:42,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:04:42,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2023-11-21 21:04:42,451 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 14 treesize of output 10 [2023-11-21 21:04:55,140 INFO L349 Elim1Store]: treesize reduction 12, result has 87.6 percent of original size [2023-11-21 21:04:55,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 113 [2023-11-21 21:04:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:55,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:04:56,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 45 [2023-11-21 21:04:57,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 21:04:57,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 125 [2023-11-21 21:04:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:57,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285906387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:04:57,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:04:57,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 28 [2023-11-21 21:04:57,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393427259] [2023-11-21 21:04:57,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:04:57,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-21 21:04:57,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:57,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-21 21:04:57,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=746, Unknown=5, NotChecked=0, Total=870 [2023-11-21 21:04:57,264 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 30 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 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) [2023-11-21 21:05:01,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:05:01,556 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2023-11-21 21:05:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 21:05:01,557 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-21 21:05:01,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:05:01,558 INFO L225 Difference]: With dead ends: 39 [2023-11-21 21:05:01,558 INFO L226 Difference]: Without dead ends: 39 [2023-11-21 21:05:01,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=395, Invalid=1761, Unknown=6, NotChecked=0, Total=2162 [2023-11-21 21:05:01,560 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 97 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:05:01,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 78 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:05:01,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-21 21:05:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2023-11-21 21:05:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 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) [2023-11-21 21:05:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2023-11-21 21:05:01,564 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 21 [2023-11-21 21:05:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:05:01,564 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2023-11-21 21:05:01,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 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) [2023-11-21 21:05:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2023-11-21 21:05:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 21:05:01,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:05:01,566 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1] [2023-11-21 21:05:01,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 21:05:01,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 21:05:01,767 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 21:05:01,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:01,768 INFO L85 PathProgramCache]: Analyzing trace with hash -895349393, now seen corresponding path program 4 times [2023-11-21 21:05:01,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:05:01,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222617066] [2023-11-21 21:05:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:01,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:05:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,063 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:05:03,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:05:03,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222617066] [2023-11-21 21:05:03,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222617066] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:05:03,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88114533] [2023-11-21 21:05:03,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 21:05:03,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:05:03,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:05:03,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:05:03,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 21:05:03,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 21:05:03,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:05:03,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 85 conjunts are in the unsatisfiable core [2023-11-21 21:05:03,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:05:03,205 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 13 treesize of output 9 [2023-11-21 21:05:05,152 INFO L349 Elim1Store]: treesize reduction 28, result has 56.9 percent of original size [2023-11-21 21:05:05,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 87 treesize of output 81 [2023-11-21 21:05:05,174 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-21 21:05:05,201 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-21 21:05:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:05:05,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:05:07,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 103 [2023-11-21 21:05:07,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-11-21 21:05:07,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 89 [2023-11-21 21:05:07,371 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-21 21:05:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:05:07,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88114533] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:05:07,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:05:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 48 [2023-11-21 21:05:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898074004] [2023-11-21 21:05:07,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:05:07,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-21 21:05:07,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:05:07,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-21 21:05:07,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=2145, Unknown=0, NotChecked=0, Total=2450 [2023-11-21 21:05:07,475 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 50 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 49 states have internal predecessors, (111), 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) [2023-11-21 21:05:13,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:05:13,645 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2023-11-21 21:05:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-21 21:05:13,645 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-11-21 21:05:13,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:05:13,646 INFO L225 Difference]: With dead ends: 71 [2023-11-21 21:05:13,647 INFO L226 Difference]: Without dead ends: 71 [2023-11-21 21:05:13,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1014, Invalid=5792, Unknown=0, NotChecked=0, Total=6806 [2023-11-21 21:05:13,651 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 196 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 21:05:13,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 338 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 21:05:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-21 21:05:13,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2023-11-21 21:05:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 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) [2023-11-21 21:05:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2023-11-21 21:05:13,657 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 37 [2023-11-21 21:05:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:05:13,657 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2023-11-21 21:05:13,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 49 states have internal predecessors, (111), 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) [2023-11-21 21:05:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2023-11-21 21:05:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-21 21:05:13,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:05:13,660 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1] [2023-11-21 21:05:13,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 21:05:13,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:05:13,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-11-21 21:05:13,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1414663807, now seen corresponding path program 5 times [2023-11-21 21:05:13,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:05:13,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232248417] [2023-11-21 21:05:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:13,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:05:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:05:16,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:05:16,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232248417] [2023-11-21 21:05:16,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232248417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:05:16,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077803633] [2023-11-21 21:05:16,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-21 21:05:16,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:05:16,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:05:16,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:05:16,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43c2f0ac-01e4-41a6-a841-1652df41a8cb/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 21:05:16,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-11-21 21:05:16,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:05:16,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 151 conjunts are in the unsatisfiable core [2023-11-21 21:05:16,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:05:16,535 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 13 treesize of output 9 [2023-11-21 21:05:23,035 INFO L349 Elim1Store]: treesize reduction 60, result has 53.5 percent of original size [2023-11-21 21:05:23,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 17 select indices, 17 select index equivalence classes, 120 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 16 case distinctions, treesize of input 151 treesize of output 145 [2023-11-21 21:05:23,078 WARN L667 sPolynomialRelations]: Constructing 32768(two to the power of 15 dual juncts.