./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd --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 32bit --witnessprinter.graph.data.programhash 961e7f6fbd61acd9d4f1771460dcf26fd486b3de35e5e0e3ca8e6e03bda0fabc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:30:05,864 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:30:05,943 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 13:30:05,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:30:05,949 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:30:05,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:30:05,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:30:05,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:30:05,994 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:30:05,995 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:30:05,996 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:30:05,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:30:05,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:30:05,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:30:05,997 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:30:05,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:30:05,997 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:30:05,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:30:05,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:30:05,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:30:05,998 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 13:30:05,998 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 13:30:05,998 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 13:30:05,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:30:05,998 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:30:05,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:30:05,999 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:30:05,999 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:30:05,999 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:30:06,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:30:06,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:30:06,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:30:06,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:30:06,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:30:06,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:30:06,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:30:06,002 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:30:06,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:30:06,003 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:30:06,003 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:30:06,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:30:06,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:30:06,003 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961e7f6fbd61acd9d4f1771460dcf26fd486b3de35e5e0e3ca8e6e03bda0fabc [2024-11-13 13:30:06,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:30:06,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:30:06,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:30:06,409 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:30:06,409 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:30:06,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i Unable to find full path for "g++" [2024-11-13 13:30:08,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:30:08,809 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:30:08,809 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2024-11-13 13:30:08,833 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/data/990c1ab72/04ace409adc945cd9b8c97c63d4e2047/FLAG7cdafa83e [2024-11-13 13:30:08,865 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/data/990c1ab72/04ace409adc945cd9b8c97c63d4e2047 [2024-11-13 13:30:08,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:30:08,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:30:08,873 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:30:08,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:30:08,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:30:08,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:08" (1/1) ... [2024-11-13 13:30:08,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2973f411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:08, skipping insertion in model container [2024-11-13 13:30:08,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:08" (1/1) ... [2024-11-13 13:30:08,926 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:30:09,308 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 13:30:09,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:30:09,331 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:30:09,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:30:09,421 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:30:09,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09 WrapperNode [2024-11-13 13:30:09,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:30:09,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:30:09,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:30:09,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:30:09,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (1/1) ... [2024-11-13 13:30:09,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (1/1) ... [2024-11-13 13:30:09,460 INFO L138 Inliner]: procedures = 117, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-11-13 13:30:09,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:30:09,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:30:09,464 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:30:09,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:30:09,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (1/1) ... [2024-11-13 13:30:09,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (1/1) ... [2024-11-13 13:30:09,472 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (1/1) ... [2024-11-13 13:30:09,486 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2024-11-13 13:30:09,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (1/1) ... [2024-11-13 13:30:09,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (1/1) ... [2024-11-13 13:30:09,496 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (1/1) ... [2024-11-13 13:30:09,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (1/1) ... [2024-11-13 13:30:09,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (1/1) ... [2024-11-13 13:30:09,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (1/1) ... [2024-11-13 13:30:09,507 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:30:09,508 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:30:09,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:30:09,508 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:30:09,509 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (1/1) ... [2024-11-13 13:30:09,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:30:09,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:09,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:30:09,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:30:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:30:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:30:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:30:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:30:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:30:09,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:30:09,681 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:30:09,683 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:30:09,923 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-13 13:30:09,923 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:30:09,936 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:30:09,937 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:30:09,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:09 BoogieIcfgContainer [2024-11-13 13:30:09,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:30:09,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:30:09,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:30:09,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:30:09,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:30:08" (1/3) ... [2024-11-13 13:30:09,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b47908e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:30:09, skipping insertion in model container [2024-11-13 13:30:09,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:09" (2/3) ... [2024-11-13 13:30:09,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b47908e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:30:09, skipping insertion in model container [2024-11-13 13:30:09,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:09" (3/3) ... [2024-11-13 13:30:09,948 INFO L112 eAbstractionObserver]: Analyzing ICFG strreplace-alloca-2.i [2024-11-13 13:30:09,966 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:30:09,968 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG strreplace-alloca-2.i that has 1 procedures, 33 locations, 1 initial locations, 2 loop locations, and 11 error locations. [2024-11-13 13:30:10,014 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:30:10,032 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@321575ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:30:10,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-13 13:30:10,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 32 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) [2024-11-13 13:30:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 13:30:10,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:10,045 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 13:30:10,045 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:10,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2024-11-13 13:30:10,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:10,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816444429] [2024-11-13 13:30:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:10,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:10,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816444429] [2024-11-13 13:30:10,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816444429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:10,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:10,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:30:10,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938438631] [2024-11-13 13:30:10,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:10,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:30:10,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:10,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:30:10,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:10,399 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 32 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:10,467 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-11-13 13:30:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:30:10,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2024-11-13 13:30:10,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:10,478 INFO L225 Difference]: With dead ends: 38 [2024-11-13 13:30:10,478 INFO L226 Difference]: Without dead ends: 36 [2024-11-13 13:30:10,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:10,485 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:10,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 60 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:30:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-13 13:30:10,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-13 13:30:10,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-11-13 13:30:10,529 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 6 [2024-11-13 13:30:10,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:10,529 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-11-13 13:30:10,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-11-13 13:30:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 13:30:10,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:10,530 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 13:30:10,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:30:10,533 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:10,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2024-11-13 13:30:10,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:10,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946598144] [2024-11-13 13:30:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:10,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:10,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:10,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946598144] [2024-11-13 13:30:10,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946598144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:10,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:10,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:30:10,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77388807] [2024-11-13 13:30:10,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:10,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:30:10,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:10,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:30:10,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:30:10,676 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:10,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:10,731 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-11-13 13:30:10,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:30:10,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-11-13 13:30:10,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:10,734 INFO L225 Difference]: With dead ends: 31 [2024-11-13 13:30:10,734 INFO L226 Difference]: Without dead ends: 31 [2024-11-13 13:30:10,734 INFO L431 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 [2024-11-13 13:30:10,735 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:10,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 39 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:30:10,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-13 13:30:10,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-13 13:30:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-13 13:30:10,742 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 6 [2024-11-13 13:30:10,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:10,742 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-13 13:30:10,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:10,742 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-13 13:30:10,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 13:30:10,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:10,743 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 13:30:10,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:30:10,743 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:10,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:10,749 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2024-11-13 13:30:10,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:10,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383962365] [2024-11-13 13:30:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:10,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:11,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:11,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383962365] [2024-11-13 13:30:11,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383962365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:11,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:11,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:30:11,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668560800] [2024-11-13 13:30:11,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:11,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:30:11,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:11,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:30:11,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:30:11,078 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:11,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:11,200 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2024-11-13 13:30:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:30:11,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 6 [2024-11-13 13:30:11,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:11,202 INFO L225 Difference]: With dead ends: 34 [2024-11-13 13:30:11,202 INFO L226 Difference]: Without dead ends: 34 [2024-11-13 13:30:11,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:30:11,203 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:11,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 69 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:30:11,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-13 13:30:11,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-11-13 13:30:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-13 13:30:11,207 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2024-11-13 13:30:11,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:11,207 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-13 13:30:11,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:11,207 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-13 13:30:11,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 13:30:11,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:11,208 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:11,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:30:11,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:11,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:11,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1804969579, now seen corresponding path program 1 times [2024-11-13 13:30:11,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:11,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319235252] [2024-11-13 13:30:11,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:11,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:11,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:11,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319235252] [2024-11-13 13:30:11,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319235252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:11,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:11,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:30:11,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665281027] [2024-11-13 13:30:11,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:11,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:30:11,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:11,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:30:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:11,454 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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) [2024-11-13 13:30:11,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:11,532 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-11-13 13:30:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:30:11,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 [2024-11-13 13:30:11,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:11,534 INFO L225 Difference]: With dead ends: 35 [2024-11-13 13:30:11,534 INFO L226 Difference]: Without dead ends: 35 [2024-11-13 13:30:11,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:11,536 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:11,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:30:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-13 13:30:11,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-13 13:30:11,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.5) internal successors, (39), 34 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) [2024-11-13 13:30:11,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-13 13:30:11,541 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 7 [2024-11-13 13:30:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:11,541 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-13 13:30:11,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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) [2024-11-13 13:30:11,541 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-13 13:30:11,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 13:30:11,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:11,542 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:11,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:30:11,542 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:11,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:11,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1806816621, now seen corresponding path program 1 times [2024-11-13 13:30:11,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:11,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568242782] [2024-11-13 13:30:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:11,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:11,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:11,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568242782] [2024-11-13 13:30:11,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568242782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:11,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:11,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:30:11,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284174426] [2024-11-13 13:30:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:11,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:30:11,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:30:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:30:11,905 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2024-11-13 13:30:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:11,980 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-11-13 13:30:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:30:11,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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 [2024-11-13 13:30:11,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:11,984 INFO L225 Difference]: With dead ends: 38 [2024-11-13 13:30:11,984 INFO L226 Difference]: Without dead ends: 38 [2024-11-13 13:30:11,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:30:11,985 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:11,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 46 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:30:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-13 13:30:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2024-11-13 13:30:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.5) internal successors, (39), 34 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) [2024-11-13 13:30:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-13 13:30:11,992 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 7 [2024-11-13 13:30:11,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:11,992 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-13 13:30:11,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2024-11-13 13:30:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-13 13:30:11,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 13:30:11,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:11,996 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:11,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:30:11,997 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:11,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:11,997 INFO L85 PathProgramCache]: Analyzing trace with hash -591023154, now seen corresponding path program 1 times [2024-11-13 13:30:11,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:11,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772110266] [2024-11-13 13:30:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:11,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:12,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:12,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772110266] [2024-11-13 13:30:12,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772110266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:12,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:12,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:30:12,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388638165] [2024-11-13 13:30:12,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:12,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:30:12,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:12,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:30:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:12,160 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:12,233 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2024-11-13 13:30:12,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:30:12,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 [2024-11-13 13:30:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:12,235 INFO L225 Difference]: With dead ends: 32 [2024-11-13 13:30:12,235 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 13:30:12,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:12,236 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:12,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 30 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:30:12,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 13:30:12,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-13 13:30:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-13 13:30:12,244 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 9 [2024-11-13 13:30:12,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:12,246 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-13 13:30:12,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:12,246 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-13 13:30:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 13:30:12,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:12,247 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:12,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:30:12,247 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:12,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:12,248 INFO L85 PathProgramCache]: Analyzing trace with hash -591023153, now seen corresponding path program 1 times [2024-11-13 13:30:12,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:12,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716121555] [2024-11-13 13:30:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:12,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:12,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:12,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:12,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716121555] [2024-11-13 13:30:12,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716121555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:12,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:12,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:30:12,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736402762] [2024-11-13 13:30:12,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:12,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:30:12,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:12,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:30:12,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:30:12,465 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:12,602 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-13 13:30:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:30:12,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 [2024-11-13 13:30:12,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:12,604 INFO L225 Difference]: With dead ends: 41 [2024-11-13 13:30:12,605 INFO L226 Difference]: Without dead ends: 41 [2024-11-13 13:30:12,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:30:12,606 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:12,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 56 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:30:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-13 13:30:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2024-11-13 13:30:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-11-13 13:30:12,618 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 9 [2024-11-13 13:30:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:12,618 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-11-13 13:30:12,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-11-13 13:30:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 13:30:12,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:12,619 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:12,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:30:12,619 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:12,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:12,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1185617522, now seen corresponding path program 1 times [2024-11-13 13:30:12,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:12,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615920231] [2024-11-13 13:30:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:12,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:13,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:13,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615920231] [2024-11-13 13:30:13,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615920231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:13,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236505873] [2024-11-13 13:30:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:13,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:13,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:13,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:13,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:30:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:13,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 13:30:13,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:13,171 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 7 [2024-11-13 13:30:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:13,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:13,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236505873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:13,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:13,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-13 13:30:13,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292972638] [2024-11-13 13:30:13,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:13,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 13:30:13,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:13,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 13:30:13,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:30:13,779 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:14,121 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2024-11-13 13:30:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:30:14,122 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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 [2024-11-13 13:30:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:14,122 INFO L225 Difference]: With dead ends: 38 [2024-11-13 13:30:14,122 INFO L226 Difference]: Without dead ends: 38 [2024-11-13 13:30:14,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2024-11-13 13:30:14,123 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:14,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 140 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:30:14,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-13 13:30:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2024-11-13 13:30:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-11-13 13:30:14,130 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 9 [2024-11-13 13:30:14,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:14,131 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-11-13 13:30:14,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-11-13 13:30:14,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 13:30:14,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:14,131 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:14,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:30:14,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:14,340 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:14,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:14,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1900564221, now seen corresponding path program 1 times [2024-11-13 13:30:14,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:14,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60855712] [2024-11-13 13:30:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:14,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:14,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:14,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60855712] [2024-11-13 13:30:14,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60855712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:14,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:14,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:30:14,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263316769] [2024-11-13 13:30:14,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:14,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:30:14,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:14,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:30:14,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:30:14,798 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:14,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:14,866 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-11-13 13:30:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:30:14,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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 10 [2024-11-13 13:30:14,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:14,868 INFO L225 Difference]: With dead ends: 34 [2024-11-13 13:30:14,868 INFO L226 Difference]: Without dead ends: 34 [2024-11-13 13:30:14,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:30:14,869 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:14,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:30:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-13 13:30:14,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2024-11-13 13:30:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-13 13:30:14,873 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 10 [2024-11-13 13:30:14,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:14,874 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-13 13:30:14,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-13 13:30:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 13:30:14,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:14,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:14,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:30:14,875 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:14,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:14,876 INFO L85 PathProgramCache]: Analyzing trace with hash -670094173, now seen corresponding path program 1 times [2024-11-13 13:30:14,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:14,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351071565] [2024-11-13 13:30:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:14,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:14,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:14,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351071565] [2024-11-13 13:30:14,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351071565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:14,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:14,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:30:14,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902714318] [2024-11-13 13:30:14,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:14,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:30:14,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:14,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:30:14,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:14,987 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2024-11-13 13:30:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:15,019 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-11-13 13:30:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:30:15,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 13 [2024-11-13 13:30:15,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:15,021 INFO L225 Difference]: With dead ends: 30 [2024-11-13 13:30:15,021 INFO L226 Difference]: Without dead ends: 27 [2024-11-13 13:30:15,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:30:15,022 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:15,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 36 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:30:15,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-13 13:30:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-13 13:30:15,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:15,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-11-13 13:30:15,031 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 13 [2024-11-13 13:30:15,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:15,031 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-11-13 13:30:15,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2024-11-13 13:30:15,032 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-11-13 13:30:15,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 13:30:15,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:15,033 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:15,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:30:15,034 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:15,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:15,035 INFO L85 PathProgramCache]: Analyzing trace with hash 703249811, now seen corresponding path program 1 times [2024-11-13 13:30:15,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:15,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814152328] [2024-11-13 13:30:15,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:15,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:15,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:15,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814152328] [2024-11-13 13:30:15,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814152328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:15,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:15,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:30:15,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513217722] [2024-11-13 13:30:15,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:15,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:30:15,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:30:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:30:15,308 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2024-11-13 13:30:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:15,382 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-11-13 13:30:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:30:15,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) Word has length 14 [2024-11-13 13:30:15,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:15,383 INFO L225 Difference]: With dead ends: 32 [2024-11-13 13:30:15,383 INFO L226 Difference]: Without dead ends: 25 [2024-11-13 13:30:15,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:30:15,384 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:15,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 87 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:30:15,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-13 13:30:15,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-13 13:30:15,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:15,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-13 13:30:15,387 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2024-11-13 13:30:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:15,387 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-13 13:30:15,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2024-11-13 13:30:15,388 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-13 13:30:15,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 13:30:15,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:15,388 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:15,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:30:15,389 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:15,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:15,390 INFO L85 PathProgramCache]: Analyzing trace with hash 961415249, now seen corresponding path program 1 times [2024-11-13 13:30:15,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:15,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510895928] [2024-11-13 13:30:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:15,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:15,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:15,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510895928] [2024-11-13 13:30:15,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510895928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:30:15,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:30:15,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:30:15,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605363744] [2024-11-13 13:30:15,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:30:15,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:30:15,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:15,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:30:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:30:15,674 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2024-11-13 13:30:15,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:15,766 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2024-11-13 13:30:15,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:30:15,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) Word has length 14 [2024-11-13 13:30:15,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:15,767 INFO L225 Difference]: With dead ends: 33 [2024-11-13 13:30:15,767 INFO L226 Difference]: Without dead ends: 28 [2024-11-13 13:30:15,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:30:15,768 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:15,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:30:15,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-13 13:30:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-11-13 13:30:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-13 13:30:15,776 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2024-11-13 13:30:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:15,776 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-13 13:30:15,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2024-11-13 13:30:15,776 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-13 13:30:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 13:30:15,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:15,776 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:15,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:30:15,777 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:15,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash 368842747, now seen corresponding path program 1 times [2024-11-13 13:30:15,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:15,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864361524] [2024-11-13 13:30:15,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:15,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:16,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:16,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864361524] [2024-11-13 13:30:16,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864361524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:16,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753378524] [2024-11-13 13:30:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:16,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:16,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:16,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:16,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:30:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:16,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 13:30:16,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:16,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:16,631 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 5 treesize of output 3 [2024-11-13 13:30:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:16,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753378524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:16,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:16,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-13 13:30:16,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46319071] [2024-11-13 13:30:16,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:16,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 13:30:16,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:16,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 13:30:16,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:30:16,680 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 17 states, 16 states have (on average 2.375) internal successors, (38), 17 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) [2024-11-13 13:30:16,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:16,982 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-11-13 13:30:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:30:16,988 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 17 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) Word has length 17 [2024-11-13 13:30:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:16,988 INFO L225 Difference]: With dead ends: 35 [2024-11-13 13:30:16,988 INFO L226 Difference]: Without dead ends: 35 [2024-11-13 13:30:16,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:30:16,989 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:16,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 99 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:30:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-13 13:30:17,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2024-11-13 13:30:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-13 13:30:17,004 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2024-11-13 13:30:17,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:17,005 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-13 13:30:17,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 17 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) [2024-11-13 13:30:17,005 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-13 13:30:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 13:30:17,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:17,005 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:17,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:30:17,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:17,206 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:17,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash 841487591, now seen corresponding path program 2 times [2024-11-13 13:30:17,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:17,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920354031] [2024-11-13 13:30:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:17,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:17,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:17,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920354031] [2024-11-13 13:30:17,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920354031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:17,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419798106] [2024-11-13 13:30:17,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:30:17,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:17,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:17,651 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:17,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:30:17,734 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:30:17,734 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:17,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 13:30:17,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:17,840 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 [2024-11-13 13:30:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:17,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:17,948 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 15 treesize of output 13 [2024-11-13 13:30:17,952 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 16 treesize of output 12 [2024-11-13 13:30:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:18,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419798106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:18,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:18,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-13 13:30:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127209187] [2024-11-13 13:30:18,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:18,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 13:30:18,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:18,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 13:30:18,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:30:18,029 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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) [2024-11-13 13:30:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:18,224 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2024-11-13 13:30:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:30:18,225 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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 22 [2024-11-13 13:30:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:18,225 INFO L225 Difference]: With dead ends: 44 [2024-11-13 13:30:18,225 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 13:30:18,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:30:18,226 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:18,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 70 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:30:18,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 13:30:18,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-13 13:30:18,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-13 13:30:18,231 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2024-11-13 13:30:18,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:18,234 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-13 13:30:18,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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) [2024-11-13 13:30:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-13 13:30:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 13:30:18,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:18,235 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:18,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:30:18,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 13:30:18,436 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:18,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:18,436 INFO L85 PathProgramCache]: Analyzing trace with hash -121054575, now seen corresponding path program 3 times [2024-11-13 13:30:18,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:18,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455513428] [2024-11-13 13:30:18,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:18,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:18,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:18,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455513428] [2024-11-13 13:30:18,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455513428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:18,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235496623] [2024-11-13 13:30:18,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:30:18,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:18,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:18,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:18,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:30:18,922 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 13:30:18,923 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:18,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 13:30:18,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:19,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:19,386 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 7 treesize of output 5 [2024-11-13 13:30:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:19,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235496623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:19,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:19,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 21 [2024-11-13 13:30:19,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935933719] [2024-11-13 13:30:19,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:19,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 13:30:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 13:30:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:30:19,460 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:19,709 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-11-13 13:30:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:30:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-13 13:30:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:19,710 INFO L225 Difference]: With dead ends: 43 [2024-11-13 13:30:19,710 INFO L226 Difference]: Without dead ends: 43 [2024-11-13 13:30:19,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2024-11-13 13:30:19,711 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:19,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 174 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:30:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-13 13:30:19,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2024-11-13 13:30:19,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-13 13:30:19,718 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 25 [2024-11-13 13:30:19,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:19,718 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-13 13:30:19,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:19,719 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-13 13:30:19,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 13:30:19,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:19,720 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:19,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:30:19,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 13:30:19,920 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:19,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:19,921 INFO L85 PathProgramCache]: Analyzing trace with hash 989560849, now seen corresponding path program 4 times [2024-11-13 13:30:19,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:19,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050020594] [2024-11-13 13:30:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:19,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:20,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050020594] [2024-11-13 13:30:20,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050020594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455305048] [2024-11-13 13:30:20,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:30:20,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:20,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:20,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:20,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:30:20,570 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:30:20,570 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:20,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 13:30:20,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:20,730 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 [2024-11-13 13:30:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:20,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:20,862 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 15 treesize of output 13 [2024-11-13 13:30:20,864 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 16 treesize of output 12 [2024-11-13 13:30:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:20,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455305048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:20,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:20,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2024-11-13 13:30:20,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619041824] [2024-11-13 13:30:20,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:20,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 13:30:20,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:20,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 13:30:20,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:30:20,956 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:21,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:21,278 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2024-11-13 13:30:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:30:21,279 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-13 13:30:21,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:21,279 INFO L225 Difference]: With dead ends: 61 [2024-11-13 13:30:21,279 INFO L226 Difference]: Without dead ends: 42 [2024-11-13 13:30:21,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-11-13 13:30:21,281 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:21,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 181 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:30:21,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-13 13:30:21,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-11-13 13:30:21,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-13 13:30:21,286 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 30 [2024-11-13 13:30:21,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:21,286 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-13 13:30:21,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:21,286 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-13 13:30:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 13:30:21,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:21,287 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:21,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:30:21,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 13:30:21,494 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:21,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2139554885, now seen corresponding path program 5 times [2024-11-13 13:30:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:21,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532612870] [2024-11-13 13:30:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:21,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:22,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:22,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532612870] [2024-11-13 13:30:22,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532612870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:22,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200610334] [2024-11-13 13:30:22,004 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:30:22,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:22,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:22,006 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:22,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:30:22,101 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 13:30:22,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:22,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 13:30:22,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:22,117 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 [2024-11-13 13:30:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:22,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200610334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:22,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:22,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-13 13:30:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598730918] [2024-11-13 13:30:22,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:22,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 13:30:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:22,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 13:30:22,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2024-11-13 13:30:22,861 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 26 states, 25 states have (on average 3.28) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:23,201 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2024-11-13 13:30:23,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:30:23,201 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.28) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-13 13:30:23,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:23,202 INFO L225 Difference]: With dead ends: 53 [2024-11-13 13:30:23,202 INFO L226 Difference]: Without dead ends: 53 [2024-11-13 13:30:23,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:30:23,204 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:23,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 212 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:30:23,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-13 13:30:23,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2024-11-13 13:30:23,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:23,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2024-11-13 13:30:23,208 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 33 [2024-11-13 13:30:23,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:23,208 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2024-11-13 13:30:23,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.28) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:23,209 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2024-11-13 13:30:23,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 13:30:23,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:23,209 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:23,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:30:23,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:30:23,416 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:23,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:23,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1729918681, now seen corresponding path program 6 times [2024-11-13 13:30:23,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:23,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859100391] [2024-11-13 13:30:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:23,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:23,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859100391] [2024-11-13 13:30:23,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859100391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:23,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758565792] [2024-11-13 13:30:23,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:30:23,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:23,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:23,897 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:23,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:30:24,010 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-13 13:30:24,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:24,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 13:30:24,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:24,181 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 [2024-11-13 13:30:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:24,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:24,359 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 15 treesize of output 13 [2024-11-13 13:30:24,363 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 16 treesize of output 12 [2024-11-13 13:30:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:24,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758565792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:24,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:24,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 25 [2024-11-13 13:30:24,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988802106] [2024-11-13 13:30:24,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:24,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:30:24,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:24,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:30:24,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:30:24,457 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 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) [2024-11-13 13:30:25,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:25,068 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2024-11-13 13:30:25,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 13:30:25,069 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 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 38 [2024-11-13 13:30:25,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:25,069 INFO L225 Difference]: With dead ends: 78 [2024-11-13 13:30:25,069 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 13:30:25,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2024-11-13 13:30:25,071 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:25,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 345 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:30:25,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 13:30:25,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-11-13 13:30:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:25,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-11-13 13:30:25,074 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 38 [2024-11-13 13:30:25,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:25,075 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-11-13 13:30:25,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 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) [2024-11-13 13:30:25,075 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-11-13 13:30:25,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 13:30:25,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:25,076 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:25,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 13:30:25,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 13:30:25,277 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:25,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:25,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1747434193, now seen corresponding path program 7 times [2024-11-13 13:30:25,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:25,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634687618] [2024-11-13 13:30:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:25,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:25,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:25,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634687618] [2024-11-13 13:30:25,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634687618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:25,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011476025] [2024-11-13 13:30:25,961 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:30:25,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:25,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:25,963 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:25,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:30:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:26,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 13:30:26,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:26,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:26,801 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 5 treesize of output 3 [2024-11-13 13:30:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:26,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011476025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:26,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:26,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 27 [2024-11-13 13:30:26,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404782377] [2024-11-13 13:30:26,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:26,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 13:30:26,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 13:30:26,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2024-11-13 13:30:26,935 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 28 states, 27 states have (on average 3.185185185185185) internal successors, (86), 28 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:27,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:27,540 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2024-11-13 13:30:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:30:27,541 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.185185185185185) internal successors, (86), 28 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-13 13:30:27,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:27,542 INFO L225 Difference]: With dead ends: 63 [2024-11-13 13:30:27,543 INFO L226 Difference]: Without dead ends: 63 [2024-11-13 13:30:27,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2024-11-13 13:30:27,544 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:27,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 382 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:30:27,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-13 13:30:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2024-11-13 13:30:27,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.125) internal successors, (63), 56 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) [2024-11-13 13:30:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2024-11-13 13:30:27,553 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 41 [2024-11-13 13:30:27,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:27,553 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2024-11-13 13:30:27,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.185185185185185) internal successors, (86), 28 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2024-11-13 13:30:27,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 13:30:27,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:27,555 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:27,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:30:27,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:27,755 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:27,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:27,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1629407185, now seen corresponding path program 8 times [2024-11-13 13:30:27,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:27,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703890005] [2024-11-13 13:30:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:27,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:28,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:28,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703890005] [2024-11-13 13:30:28,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703890005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:28,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391985535] [2024-11-13 13:30:28,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:30:28,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:28,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:28,499 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:28,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:30:28,627 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:30:28,627 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:28,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 13:30:28,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:28,845 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 [2024-11-13 13:30:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:28,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:29,019 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 15 treesize of output 13 [2024-11-13 13:30:29,023 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 16 treesize of output 12 [2024-11-13 13:30:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:29,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391985535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:29,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:29,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 27 [2024-11-13 13:30:29,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135919236] [2024-11-13 13:30:29,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:29,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 13:30:29,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:29,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 13:30:29,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2024-11-13 13:30:29,135 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:29,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:29,656 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2024-11-13 13:30:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 13:30:29,657 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-13 13:30:29,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:29,657 INFO L225 Difference]: With dead ends: 95 [2024-11-13 13:30:29,657 INFO L226 Difference]: Without dead ends: 62 [2024-11-13 13:30:29,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2024-11-13 13:30:29,658 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:29,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 380 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:30:29,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-13 13:30:29,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2024-11-13 13:30:29,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:29,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-11-13 13:30:29,661 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 46 [2024-11-13 13:30:29,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:29,661 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-11-13 13:30:29,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:29,662 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-11-13 13:30:29,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 13:30:29,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:29,662 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:29,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:30:29,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:29,867 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:29,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:29,867 INFO L85 PathProgramCache]: Analyzing trace with hash 991145851, now seen corresponding path program 9 times [2024-11-13 13:30:29,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:29,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526118548] [2024-11-13 13:30:29,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:29,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:30,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:30,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526118548] [2024-11-13 13:30:30,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526118548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:30,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352367256] [2024-11-13 13:30:30,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:30:30,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:30,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:30,432 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:30,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:30:30,568 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-13 13:30:30,568 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:30,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 13:30:30,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:31,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:31,462 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 7 treesize of output 5 [2024-11-13 13:30:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:31,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352367256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:31,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:31,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 36 [2024-11-13 13:30:31,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467949401] [2024-11-13 13:30:31,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:31,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 13:30:31,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:31,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 13:30:31,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1133, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 13:30:31,605 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 37 states, 36 states have (on average 3.4166666666666665) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:32,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:32,090 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2024-11-13 13:30:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 13:30:32,090 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.4166666666666665) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-13 13:30:32,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:32,091 INFO L225 Difference]: With dead ends: 73 [2024-11-13 13:30:32,091 INFO L226 Difference]: Without dead ends: 73 [2024-11-13 13:30:32,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=212, Invalid=1194, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 13:30:32,092 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 91 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:32,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 381 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:30:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-13 13:30:32,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2024-11-13 13:30:32,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.121212121212121) internal successors, (74), 66 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:32,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2024-11-13 13:30:32,098 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 49 [2024-11-13 13:30:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:32,098 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2024-11-13 13:30:32,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.4166666666666665) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:32,099 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2024-11-13 13:30:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 13:30:32,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:32,104 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:32,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 13:30:32,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 13:30:32,305 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:32,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:32,305 INFO L85 PathProgramCache]: Analyzing trace with hash 698559847, now seen corresponding path program 10 times [2024-11-13 13:30:32,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:32,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925948202] [2024-11-13 13:30:32,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:32,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 21 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:33,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:33,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925948202] [2024-11-13 13:30:33,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925948202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:33,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501642315] [2024-11-13 13:30:33,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:30:33,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:33,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:33,018 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:33,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:30:33,194 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:30:33,194 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:33,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 13:30:33,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:33,477 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 [2024-11-13 13:30:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 21 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:33,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:33,712 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 15 treesize of output 13 [2024-11-13 13:30:33,715 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 16 treesize of output 12 [2024-11-13 13:30:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 21 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:33,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501642315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:33,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:33,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-11-13 13:30:33,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061392068] [2024-11-13 13:30:33,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:33,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 13:30:33,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:33,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 13:30:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2024-11-13 13:30:33,851 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:34,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:34,464 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2024-11-13 13:30:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 13:30:34,465 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-13 13:30:34,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:34,466 INFO L225 Difference]: With dead ends: 112 [2024-11-13 13:30:34,466 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 13:30:34,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 13:30:34,470 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:34,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 456 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:30:34,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 13:30:34,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2024-11-13 13:30:34,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 69 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:34,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2024-11-13 13:30:34,474 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 54 [2024-11-13 13:30:34,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:34,476 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2024-11-13 13:30:34,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:34,476 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2024-11-13 13:30:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 13:30:34,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:34,477 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:34,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:30:34,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 13:30:34,677 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:34,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:34,678 INFO L85 PathProgramCache]: Analyzing trace with hash 87214865, now seen corresponding path program 11 times [2024-11-13 13:30:34,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:34,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450225220] [2024-11-13 13:30:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:34,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 22 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:35,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:35,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450225220] [2024-11-13 13:30:35,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450225220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:35,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165106034] [2024-11-13 13:30:35,376 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:30:35,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:35,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:35,379 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:35,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:30:35,511 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-13 13:30:35,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:35,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 13:30:35,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:35,526 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 [2024-11-13 13:30:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 35 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:35,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 35 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:36,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165106034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:36,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:36,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 40 [2024-11-13 13:30:36,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981004740] [2024-11-13 13:30:36,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:36,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 13:30:36,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:36,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 13:30:36,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1395, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 13:30:36,979 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 41 states, 40 states have (on average 3.475) internal successors, (139), 41 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:37,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:37,653 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2024-11-13 13:30:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 13:30:37,653 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 3.475) internal successors, (139), 41 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-13 13:30:37,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:37,654 INFO L225 Difference]: With dead ends: 83 [2024-11-13 13:30:37,654 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 13:30:37,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=267, Invalid=1455, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 13:30:37,655 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 91 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:37,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 537 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:30:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 13:30:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2024-11-13 13:30:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.118421052631579) internal successors, (85), 76 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2024-11-13 13:30:37,658 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 57 [2024-11-13 13:30:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:37,659 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2024-11-13 13:30:37,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 3.475) internal successors, (139), 41 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2024-11-13 13:30:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 13:30:37,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:37,660 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:37,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 13:30:37,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 13:30:37,864 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:37,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash -306978927, now seen corresponding path program 12 times [2024-11-13 13:30:37,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:37,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930466296] [2024-11-13 13:30:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:37,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 25 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:38,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:38,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930466296] [2024-11-13 13:30:38,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930466296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:38,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575860039] [2024-11-13 13:30:38,688 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:30:38,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:38,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:38,691 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:38,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:30:38,899 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-13 13:30:38,899 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:38,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-13 13:30:38,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:39,208 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 [2024-11-13 13:30:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 25 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:39,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:39,460 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 15 treesize of output 13 [2024-11-13 13:30:39,465 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 16 treesize of output 12 [2024-11-13 13:30:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 25 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:39,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575860039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:39,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:39,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 33 [2024-11-13 13:30:39,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691687393] [2024-11-13 13:30:39,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:39,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 13:30:39,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:39,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 13:30:39,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 13:30:39,589 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 33 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 33 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:40,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:40,312 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2024-11-13 13:30:40,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 13:30:40,313 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 33 states have internal predecessors, (94), 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 62 [2024-11-13 13:30:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:40,314 INFO L225 Difference]: With dead ends: 129 [2024-11-13 13:30:40,314 INFO L226 Difference]: Without dead ends: 82 [2024-11-13 13:30:40,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=1433, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 13:30:40,315 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 29 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:40,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 588 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:30:40,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-13 13:30:40,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2024-11-13 13:30:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.1139240506329113) internal successors, (88), 79 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-11-13 13:30:40,319 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 62 [2024-11-13 13:30:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:40,319 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-11-13 13:30:40,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 33 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:40,320 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-11-13 13:30:40,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 13:30:40,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:40,320 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:40,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:30:40,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 13:30:40,524 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:40,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:40,524 INFO L85 PathProgramCache]: Analyzing trace with hash 935867195, now seen corresponding path program 13 times [2024-11-13 13:30:40,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:40,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678623759] [2024-11-13 13:30:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:40,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 35 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:41,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:41,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678623759] [2024-11-13 13:30:41,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678623759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:41,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910376838] [2024-11-13 13:30:41,377 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:30:41,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:41,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:41,380 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:41,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:30:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:41,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 13:30:41,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 51 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:41,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:42,314 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 5 treesize of output 3 [2024-11-13 13:30:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 51 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:42,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910376838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:42,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:42,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 39 [2024-11-13 13:30:42,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622760455] [2024-11-13 13:30:42,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:42,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-13 13:30:42,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:42,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-13 13:30:42,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1363, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 13:30:42,492 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 40 states, 39 states have (on average 3.4358974358974357) internal successors, (134), 40 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:43,015 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2024-11-13 13:30:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 13:30:43,016 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.4358974358974357) internal successors, (134), 40 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-13 13:30:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:43,016 INFO L225 Difference]: With dead ends: 93 [2024-11-13 13:30:43,016 INFO L226 Difference]: Without dead ends: 93 [2024-11-13 13:30:43,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=214, Invalid=1426, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 13:30:43,017 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 76 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:43,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 570 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:30:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-13 13:30:43,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2024-11-13 13:30:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.1162790697674418) internal successors, (96), 86 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:43,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2024-11-13 13:30:43,021 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 65 [2024-11-13 13:30:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:43,021 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2024-11-13 13:30:43,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.4358974358974357) internal successors, (134), 40 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:43,021 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2024-11-13 13:30:43,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:30:43,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:43,022 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:43,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 13:30:43,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 13:30:43,227 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:43,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash -806682201, now seen corresponding path program 14 times [2024-11-13 13:30:43,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:43,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653472324] [2024-11-13 13:30:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:43,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 29 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:44,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:44,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653472324] [2024-11-13 13:30:44,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653472324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:44,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290684289] [2024-11-13 13:30:44,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:30:44,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:44,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:44,142 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:44,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:30:44,312 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:30:44,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:44,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 13:30:44,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:44,714 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 [2024-11-13 13:30:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 29 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:44,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:44,933 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 15 treesize of output 13 [2024-11-13 13:30:44,936 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 16 treesize of output 12 [2024-11-13 13:30:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 29 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:45,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290684289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:45,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:45,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 36 [2024-11-13 13:30:45,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451220001] [2024-11-13 13:30:45,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:45,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 13:30:45,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:45,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 13:30:45,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1165, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 13:30:45,057 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand has 36 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 36 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:45,863 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2024-11-13 13:30:45,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 13:30:45,863 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 36 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-13 13:30:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:45,864 INFO L225 Difference]: With dead ends: 146 [2024-11-13 13:30:45,864 INFO L226 Difference]: Without dead ends: 92 [2024-11-13 13:30:45,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=1753, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 13:30:45,865 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 28 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:45,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 765 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:30:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-13 13:30:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2024-11-13 13:30:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1123595505617978) internal successors, (99), 89 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-11-13 13:30:45,870 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 70 [2024-11-13 13:30:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:45,870 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-11-13 13:30:45,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 36 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-11-13 13:30:45,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 13:30:45,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:45,871 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:45,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 13:30:46,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 13:30:46,072 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:46,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:46,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1802373969, now seen corresponding path program 15 times [2024-11-13 13:30:46,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:46,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610443924] [2024-11-13 13:30:46,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:46,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 51 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:46,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:46,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610443924] [2024-11-13 13:30:46,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610443924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:46,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785496012] [2024-11-13 13:30:46,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:30:46,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:46,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:46,884 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:46,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 13:30:47,072 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-13 13:30:47,072 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:47,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 13:30:47,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 70 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:47,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:48,140 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 7 treesize of output 5 [2024-11-13 13:30:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 70 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:48,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785496012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:48,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:48,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 51 [2024-11-13 13:30:48,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991426620] [2024-11-13 13:30:48,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:48,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-13 13:30:48,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:48,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-13 13:30:48,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=2258, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 13:30:48,356 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 52 states, 51 states have (on average 3.6470588235294117) internal successors, (186), 52 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:48,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:48,947 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2024-11-13 13:30:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 13:30:48,948 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 3.6470588235294117) internal successors, (186), 52 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-13 13:30:48,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:48,948 INFO L225 Difference]: With dead ends: 103 [2024-11-13 13:30:48,948 INFO L226 Difference]: Without dead ends: 103 [2024-11-13 13:30:48,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 105 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=413, Invalid=2343, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 13:30:48,950 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 98 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:48,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 727 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:30:48,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-13 13:30:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2024-11-13 13:30:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.1145833333333333) internal successors, (107), 96 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2024-11-13 13:30:48,953 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 73 [2024-11-13 13:30:48,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:48,953 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2024-11-13 13:30:48,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 3.6470588235294117) internal successors, (186), 52 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:48,953 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2024-11-13 13:30:48,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 13:30:48,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:48,954 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:48,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 13:30:49,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 13:30:49,155 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:49,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:49,155 INFO L85 PathProgramCache]: Analyzing trace with hash -675887279, now seen corresponding path program 16 times [2024-11-13 13:30:49,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:49,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882113818] [2024-11-13 13:30:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:49,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 33 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:50,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:50,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882113818] [2024-11-13 13:30:50,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882113818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:50,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354604834] [2024-11-13 13:30:50,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:30:50,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:50,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:50,014 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:50,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 13:30:50,179 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:30:50,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:50,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-13 13:30:50,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:50,467 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 [2024-11-13 13:30:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 33 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:50,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:50,711 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 15 treesize of output 13 [2024-11-13 13:30:50,713 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 16 treesize of output 12 [2024-11-13 13:30:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 33 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:50,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354604834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:50,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:50,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 39 [2024-11-13 13:30:50,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98317843] [2024-11-13 13:30:50,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:50,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 13:30:50,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 13:30:50,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1380, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 13:30:50,877 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 39 states, 39 states have (on average 2.9743589743589745) internal successors, (116), 39 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:51,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:51,954 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2024-11-13 13:30:51,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 13:30:51,954 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.9743589743589745) internal successors, (116), 39 states have internal predecessors, (116), 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 78 [2024-11-13 13:30:51,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:51,955 INFO L225 Difference]: With dead ends: 163 [2024-11-13 13:30:51,955 INFO L226 Difference]: Without dead ends: 102 [2024-11-13 13:30:51,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=151, Invalid=2105, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 13:30:51,956 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 31 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:51,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 899 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 13:30:51,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-13 13:30:51,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2024-11-13 13:30:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.1111111111111112) internal successors, (110), 99 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-11-13 13:30:51,960 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 78 [2024-11-13 13:30:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:51,960 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-11-13 13:30:51,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.9743589743589745) internal successors, (116), 39 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-11-13 13:30:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 13:30:51,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:51,961 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:51,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 13:30:52,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 13:30:52,162 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:52,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:52,163 INFO L85 PathProgramCache]: Analyzing trace with hash 496142075, now seen corresponding path program 17 times [2024-11-13 13:30:52,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:52,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883079733] [2024-11-13 13:30:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:52,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 70 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:53,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:53,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883079733] [2024-11-13 13:30:53,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883079733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:53,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450477010] [2024-11-13 13:30:53,110 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:30:53,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:53,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:53,113 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:53,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 13:30:53,323 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-13 13:30:53,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:53,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-13 13:30:53,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:53,338 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 [2024-11-13 13:30:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 92 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:53,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 92 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:55,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450477010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:55,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:55,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 55 [2024-11-13 13:30:55,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745613428] [2024-11-13 13:30:55,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:55,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 13:30:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:55,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 13:30:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=2634, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 13:30:55,062 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 56 states, 55 states have (on average 3.5636363636363635) internal successors, (196), 56 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:55,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:55,772 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2024-11-13 13:30:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 13:30:55,773 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 3.5636363636363635) internal successors, (196), 56 states have internal predecessors, (196), 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 81 [2024-11-13 13:30:55,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:55,774 INFO L225 Difference]: With dead ends: 113 [2024-11-13 13:30:55,774 INFO L226 Difference]: Without dead ends: 113 [2024-11-13 13:30:55,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=477, Invalid=2715, Unknown=0, NotChecked=0, Total=3192 [2024-11-13 13:30:55,775 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 112 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:55,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 884 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:30:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-13 13:30:55,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2024-11-13 13:30:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 106 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2024-11-13 13:30:55,778 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 81 [2024-11-13 13:30:55,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:55,778 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2024-11-13 13:30:55,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 3.5636363636363635) internal successors, (196), 56 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:55,779 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2024-11-13 13:30:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 13:30:55,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:55,779 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:55,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 13:30:55,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 13:30:55,980 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:55,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:55,980 INFO L85 PathProgramCache]: Analyzing trace with hash -499186201, now seen corresponding path program 18 times [2024-11-13 13:30:55,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:55,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017021411] [2024-11-13 13:30:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:55,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:30:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 37 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:57,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:30:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017021411] [2024-11-13 13:30:57,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017021411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:30:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121397029] [2024-11-13 13:30:57,033 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:30:57,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:57,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:57,035 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:57,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 13:30:57,356 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-13 13:30:57,356 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:57,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-13 13:30:57,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:57,796 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 [2024-11-13 13:30:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 37 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:57,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:58,088 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 15 treesize of output 13 [2024-11-13 13:30:58,091 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 16 treesize of output 12 [2024-11-13 13:30:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 37 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:30:58,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121397029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:58,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:58,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 42 [2024-11-13 13:30:58,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662611734] [2024-11-13 13:30:58,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:58,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 13:30:58,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:58,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 13:30:58,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1613, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 13:30:58,258 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 42 states, 42 states have (on average 3.0238095238095237) internal successors, (127), 42 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:59,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:59,695 INFO L93 Difference]: Finished difference Result 180 states and 200 transitions. [2024-11-13 13:30:59,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 13:30:59,696 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.0238095238095237) internal successors, (127), 42 states have internal predecessors, (127), 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 86 [2024-11-13 13:30:59,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:59,698 INFO L225 Difference]: With dead ends: 180 [2024-11-13 13:30:59,699 INFO L226 Difference]: Without dead ends: 112 [2024-11-13 13:30:59,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=163, Invalid=2489, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 13:30:59,704 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 34 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:59,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1193 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:30:59,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-13 13:30:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2024-11-13 13:30:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.110091743119266) internal successors, (121), 109 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-11-13 13:30:59,715 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 86 [2024-11-13 13:30:59,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:59,716 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-11-13 13:30:59,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.0238095238095237) internal successors, (127), 42 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:30:59,716 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-11-13 13:30:59,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-13 13:30:59,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:59,717 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:59,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 13:30:59,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:59,924 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:30:59,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1587709039, now seen corresponding path program 19 times [2024-11-13 13:30:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:59,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226988878] [2024-11-13 13:30:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:59,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 92 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:01,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:01,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226988878] [2024-11-13 13:31:01,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226988878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:31:01,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60170770] [2024-11-13 13:31:01,147 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:31:01,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:01,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:01,150 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:31:01,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 13:31:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:01,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-13 13:31:01,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:31:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 117 proven. 263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:02,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:31:03,002 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 5 treesize of output 3 [2024-11-13 13:31:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 117 proven. 263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:03,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60170770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:31:03,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:31:03,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 51 [2024-11-13 13:31:03,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902491418] [2024-11-13 13:31:03,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:31:03,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-13 13:31:03,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:03,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-13 13:31:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2326, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 13:31:03,308 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 52 states, 51 states have (on average 3.5686274509803924) internal successors, (182), 52 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:04,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:04,431 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2024-11-13 13:31:04,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 13:31:04,431 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 3.5686274509803924) internal successors, (182), 52 states have internal predecessors, (182), 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 89 [2024-11-13 13:31:04,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:04,432 INFO L225 Difference]: With dead ends: 123 [2024-11-13 13:31:04,432 INFO L226 Difference]: Without dead ends: 123 [2024-11-13 13:31:04,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 139 SyntacticMatches, 11 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=349, Invalid=2407, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 13:31:04,434 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 133 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:04,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 903 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:31:04,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-13 13:31:04,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2024-11-13 13:31:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.1120689655172413) internal successors, (129), 116 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2024-11-13 13:31:04,437 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 89 [2024-11-13 13:31:04,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:04,438 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2024-11-13 13:31:04,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 3.5686274509803924) internal successors, (182), 52 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2024-11-13 13:31:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-13 13:31:04,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:04,439 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:04,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 13:31:04,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 13:31:04,640 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:31:04,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1960607983, now seen corresponding path program 20 times [2024-11-13 13:31:04,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:04,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186823373] [2024-11-13 13:31:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 41 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:05,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:05,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186823373] [2024-11-13 13:31:05,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186823373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:31:05,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656872262] [2024-11-13 13:31:05,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:31:05,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:05,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:05,961 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:31:05,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 13:31:06,166 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:31:06,166 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:31:06,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-13 13:31:06,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:31:06,697 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 [2024-11-13 13:31:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 41 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:06,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:31:07,017 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 15 treesize of output 13 [2024-11-13 13:31:07,019 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 16 treesize of output 12 [2024-11-13 13:31:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 41 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:07,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656872262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:31:07,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:31:07,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 45 [2024-11-13 13:31:07,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382553052] [2024-11-13 13:31:07,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:31:07,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 13:31:07,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:07,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 13:31:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1864, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 13:31:07,174 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 45 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:08,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:08,887 INFO L93 Difference]: Finished difference Result 197 states and 219 transitions. [2024-11-13 13:31:08,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 13:31:08,888 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 45 states have internal predecessors, (138), 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 94 [2024-11-13 13:31:08,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:08,889 INFO L225 Difference]: With dead ends: 197 [2024-11-13 13:31:08,889 INFO L226 Difference]: Without dead ends: 122 [2024-11-13 13:31:08,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=175, Invalid=2905, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 13:31:08,890 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 41 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:08,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1443 Invalid, 2570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 13:31:08,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-13 13:31:08,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2024-11-13 13:31:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.1092436974789917) internal successors, (132), 119 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-11-13 13:31:08,899 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 94 [2024-11-13 13:31:08,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:08,900 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-11-13 13:31:08,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 45 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-11-13 13:31:08,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-13 13:31:08,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:08,902 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:08,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 13:31:09,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:09,103 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:31:09,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:09,103 INFO L85 PathProgramCache]: Analyzing trace with hash 141470395, now seen corresponding path program 21 times [2024-11-13 13:31:09,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:09,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997319280] [2024-11-13 13:31:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:09,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 117 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:10,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:10,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997319280] [2024-11-13 13:31:10,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997319280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:31:10,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840101629] [2024-11-13 13:31:10,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:31:10,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:10,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:10,329 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:31:10,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 13:31:10,701 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-13 13:31:10,701 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:31:10,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-13 13:31:10,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:31:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 145 proven. 317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:11,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:31:12,551 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 7 treesize of output 5 [2024-11-13 13:31:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 145 proven. 317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:12,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840101629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:31:12,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:31:12,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 66 [2024-11-13 13:31:12,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956808129] [2024-11-13 13:31:12,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:31:12,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-13 13:31:12,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:12,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-13 13:31:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=661, Invalid=3761, Unknown=0, NotChecked=0, Total=4422 [2024-11-13 13:31:12,975 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 67 states, 66 states have (on average 3.772727272727273) internal successors, (249), 67 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:13,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:13,678 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2024-11-13 13:31:13,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 13:31:13,679 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 3.772727272727273) internal successors, (249), 67 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-13 13:31:13,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:13,680 INFO L225 Difference]: With dead ends: 133 [2024-11-13 13:31:13,680 INFO L226 Difference]: Without dead ends: 133 [2024-11-13 13:31:13,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 141 SyntacticMatches, 12 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2170 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=686, Invalid=3870, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 13:31:13,681 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 153 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:13,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 953 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:31:13,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-13 13:31:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2024-11-13 13:31:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.1111111111111112) internal successors, (140), 126 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2024-11-13 13:31:13,685 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 97 [2024-11-13 13:31:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:13,685 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2024-11-13 13:31:13,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 3.772727272727273) internal successors, (249), 67 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:13,686 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2024-11-13 13:31:13,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-13 13:31:13,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:13,687 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:13,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 13:31:13,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:13,887 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:31:13,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:13,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1646475815, now seen corresponding path program 22 times [2024-11-13 13:31:13,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:13,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318378167] [2024-11-13 13:31:13,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:13,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 45 proven. 473 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:14,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:14,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318378167] [2024-11-13 13:31:14,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318378167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:31:14,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510900314] [2024-11-13 13:31:14,981 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:31:14,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:14,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:14,983 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:31:14,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 13:31:15,230 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:31:15,230 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:31:15,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-13 13:31:15,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:31:15,684 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 [2024-11-13 13:31:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 45 proven. 473 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:15,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:31:15,989 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 15 treesize of output 13 [2024-11-13 13:31:15,997 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 16 treesize of output 12 [2024-11-13 13:31:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 45 proven. 473 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:16,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510900314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:31:16,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:31:16,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 48 [2024-11-13 13:31:16,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979273814] [2024-11-13 13:31:16,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:31:16,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-13 13:31:16,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:16,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-13 13:31:16,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=2133, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 13:31:16,158 INFO L87 Difference]: Start difference. First operand 127 states and 140 transitions. Second operand has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 48 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:17,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:17,864 INFO L93 Difference]: Finished difference Result 214 states and 238 transitions. [2024-11-13 13:31:17,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 13:31:17,864 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 48 states have internal predecessors, (149), 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 102 [2024-11-13 13:31:17,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:17,865 INFO L225 Difference]: With dead ends: 214 [2024-11-13 13:31:17,865 INFO L226 Difference]: Without dead ends: 132 [2024-11-13 13:31:17,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=187, Invalid=3353, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 13:31:17,866 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 40 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:17,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1674 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 13:31:17,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-13 13:31:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2024-11-13 13:31:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.1085271317829457) internal successors, (143), 129 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-11-13 13:31:17,877 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 102 [2024-11-13 13:31:17,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:17,877 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-11-13 13:31:17,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 48 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:17,878 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-11-13 13:31:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-13 13:31:17,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:17,879 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:17,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-13 13:31:18,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:18,080 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:31:18,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:18,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1485118417, now seen corresponding path program 23 times [2024-11-13 13:31:18,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:18,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511110946] [2024-11-13 13:31:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:18,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 145 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:19,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:19,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511110946] [2024-11-13 13:31:19,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511110946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:31:19,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909639839] [2024-11-13 13:31:19,583 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:31:19,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:19,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:19,586 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:31:19,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 13:31:19,978 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-13 13:31:19,978 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:31:19,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-13 13:31:19,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:31:20,004 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 [2024-11-13 13:31:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 176 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:20,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:31:23,145 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 176 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:23,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909639839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:31:23,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:31:23,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 70 [2024-11-13 13:31:23,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367246090] [2024-11-13 13:31:23,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:31:23,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-13 13:31:23,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:23,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-13 13:31:23,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=4260, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 13:31:23,153 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 71 states, 70 states have (on average 3.6142857142857143) internal successors, (253), 71 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:24,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:24,568 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2024-11-13 13:31:24,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 13:31:24,569 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 3.6142857142857143) internal successors, (253), 71 states have internal predecessors, (253), 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 105 [2024-11-13 13:31:24,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:24,570 INFO L225 Difference]: With dead ends: 143 [2024-11-13 13:31:24,570 INFO L226 Difference]: Without dead ends: 143 [2024-11-13 13:31:24,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1772 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=750, Invalid=4362, Unknown=0, NotChecked=0, Total=5112 [2024-11-13 13:31:24,571 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 106 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:24,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1245 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 13:31:24,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-13 13:31:24,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 137. [2024-11-13 13:31:24,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.1102941176470589) internal successors, (151), 136 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:24,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 151 transitions. [2024-11-13 13:31:24,575 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 151 transitions. Word has length 105 [2024-11-13 13:31:24,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:24,576 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 151 transitions. [2024-11-13 13:31:24,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 3.6142857142857143) internal successors, (253), 71 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:24,576 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 151 transitions. [2024-11-13 13:31:24,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-13 13:31:24,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:24,577 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:24,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-13 13:31:24,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 13:31:24,782 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:31:24,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1460271407, now seen corresponding path program 24 times [2024-11-13 13:31:24,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:24,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233935549] [2024-11-13 13:31:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:24,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 49 proven. 564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:25,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:25,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233935549] [2024-11-13 13:31:25,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233935549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:31:25,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546495198] [2024-11-13 13:31:25,958 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:31:25,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:25,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:25,963 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:31:25,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 13:31:26,346 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-13 13:31:26,347 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:31:26,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-13 13:31:26,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:31:26,361 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 [2024-11-13 13:31:26,797 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 [2024-11-13 13:31:31,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:31:31,478 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 18 treesize of output 19 [2024-11-13 13:31:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 176 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:31,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:31:36,148 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 [2024-11-13 13:31:36,154 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 [2024-11-13 13:31:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 176 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:37,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546495198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:31:37,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:31:37,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2024-11-13 13:31:37,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640296313] [2024-11-13 13:31:37,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:31:37,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-13 13:31:37,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:37,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-13 13:31:37,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=877, Invalid=7865, Unknown=0, NotChecked=0, Total=8742 [2024-11-13 13:31:37,226 INFO L87 Difference]: Start difference. First operand 137 states and 151 transitions. Second operand has 94 states, 94 states have (on average 3.4468085106382977) internal successors, (324), 94 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:31:43,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:31:47,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:32:51,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:51,223 INFO L93 Difference]: Finished difference Result 245 states and 273 transitions. [2024-11-13 13:32:51,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-13 13:32:51,224 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.4468085106382977) internal successors, (324), 94 states have internal predecessors, (324), 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 110 [2024-11-13 13:32:51,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:51,225 INFO L225 Difference]: With dead ends: 245 [2024-11-13 13:32:51,225 INFO L226 Difference]: Without dead ends: 156 [2024-11-13 13:32:51,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 72.2s TimeCoverageRelationStatistics Valid=1855, Invalid=14401, Unknown=0, NotChecked=0, Total=16256 [2024-11-13 13:32:51,227 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 663 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 2904 mSolverCounterSat, 162 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2904 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:51,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1309 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2904 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2024-11-13 13:32:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-13 13:32:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2024-11-13 13:32:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.1095890410958904) internal successors, (162), 146 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:51,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 162 transitions. [2024-11-13 13:32:51,233 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 162 transitions. Word has length 110 [2024-11-13 13:32:51,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:51,233 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 162 transitions. [2024-11-13 13:32:51,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.4468085106382977) internal successors, (324), 94 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:51,233 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 162 transitions. [2024-11-13 13:32:51,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-13 13:32:51,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:51,235 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:51,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-13 13:32:51,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:51,435 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:32:51,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1008442983, now seen corresponding path program 25 times [2024-11-13 13:32:51,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:51,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049217372] [2024-11-13 13:32:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:51,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 53 proven. 663 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:53,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049217372] [2024-11-13 13:32:53,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049217372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186326583] [2024-11-13 13:32:53,246 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:32:53,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:53,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:53,248 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:53,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 13:32:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:53,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-13 13:32:53,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:54,500 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 [2024-11-13 13:32:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 53 proven. 663 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:54,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:54,986 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 15 treesize of output 13 [2024-11-13 13:32:54,989 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 16 treesize of output 12 [2024-11-13 13:32:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 53 proven. 663 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:55,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186326583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:55,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:32:55,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 54 [2024-11-13 13:32:55,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248273719] [2024-11-13 13:32:55,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:55,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-13 13:32:55,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:55,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-13 13:32:55,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2725, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 13:32:55,242 INFO L87 Difference]: Start difference. First operand 147 states and 162 transitions. Second operand has 54 states, 54 states have (on average 3.1666666666666665) internal successors, (171), 54 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:58,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:58,749 INFO L93 Difference]: Finished difference Result 248 states and 276 transitions. [2024-11-13 13:32:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-13 13:32:58,750 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.1666666666666665) internal successors, (171), 54 states have internal predecessors, (171), 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 118 [2024-11-13 13:32:58,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:58,752 INFO L225 Difference]: With dead ends: 248 [2024-11-13 13:32:58,752 INFO L226 Difference]: Without dead ends: 152 [2024-11-13 13:32:58,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=211, Invalid=4345, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 13:32:58,753 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 48 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 3930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:58,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 2225 Invalid, 3930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 13:32:58,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-13 13:32:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2024-11-13 13:32:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.1073825503355705) internal successors, (165), 149 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-11-13 13:32:58,761 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 118 [2024-11-13 13:32:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:58,761 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-11-13 13:32:58,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.1666666666666665) internal successors, (171), 54 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-11-13 13:32:58,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-13 13:32:58,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:58,763 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:58,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 13:32:58,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 13:32:58,968 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:32:58,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:58,968 INFO L85 PathProgramCache]: Analyzing trace with hash 761850897, now seen corresponding path program 26 times [2024-11-13 13:32:58,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:58,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111057342] [2024-11-13 13:32:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:58,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 210 proven. 546 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:33:01,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:33:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111057342] [2024-11-13 13:33:01,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111057342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:33:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579129562] [2024-11-13 13:33:01,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:33:01,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:33:01,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:33:01,236 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:33:01,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 13:33:01,477 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:33:01,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:33:01,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-13 13:33:01,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:33:01,498 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 [2024-11-13 13:33:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 247 proven. 509 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:33:03,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:33:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 247 proven. 509 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:33:06,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579129562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:33:06,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:33:06,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 80 [2024-11-13 13:33:06,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786064638] [2024-11-13 13:33:06,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:33:06,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-13 13:33:06,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:33:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-13 13:33:06,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=921, Invalid=5559, Unknown=0, NotChecked=0, Total=6480 [2024-11-13 13:33:06,674 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 81 states, 80 states have (on average 3.6375) internal successors, (291), 81 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:33:09,023 INFO L93 Difference]: Finished difference Result 163 states and 180 transitions. [2024-11-13 13:33:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 13:33:09,024 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 3.6375) internal successors, (291), 81 states have internal predecessors, (291), 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 121 [2024-11-13 13:33:09,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:33:09,025 INFO L225 Difference]: With dead ends: 163 [2024-11-13 13:33:09,025 INFO L226 Difference]: Without dead ends: 163 [2024-11-13 13:33:09,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2378 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=967, Invalid=5675, Unknown=0, NotChecked=0, Total=6642 [2024-11-13 13:33:09,026 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 188 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 2866 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:33:09,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1601 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2866 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 13:33:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-13 13:33:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 157. [2024-11-13 13:33:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.108974358974359) internal successors, (173), 156 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2024-11-13 13:33:09,033 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 121 [2024-11-13 13:33:09,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:33:09,034 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2024-11-13 13:33:09,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 3.6375) internal successors, (291), 81 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2024-11-13 13:33:09,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 13:33:09,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:33:09,036 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:33:09,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 13:33:09,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 13:33:09,237 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:33:09,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:33:09,237 INFO L85 PathProgramCache]: Analyzing trace with hash -953524591, now seen corresponding path program 27 times [2024-11-13 13:33:09,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:33:09,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512910478] [2024-11-13 13:33:09,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:09,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:33:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 57 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:33:11,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:33:11,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512910478] [2024-11-13 13:33:11,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512910478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:33:11,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001330627] [2024-11-13 13:33:11,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:33:11,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:33:11,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:33:11,284 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:33:11,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 13:33:11,847 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-13 13:33:11,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:33:11,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-13 13:33:11,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:33:12,616 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 [2024-11-13 13:33:35,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:33:35,193 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 18 treesize of output 19 [2024-11-13 13:33:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 247 proven. 580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:33:35,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:33:40,893 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 [2024-11-13 13:33:40,898 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 [2024-11-13 13:33:40,907 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 [2024-11-13 13:33:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 247 proven. 580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:33:41,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001330627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:33:41,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:33:41,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 91 [2024-11-13 13:33:41,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603872731] [2024-11-13 13:33:41,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:33:41,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-13 13:33:41,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:33:41,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-13 13:33:41,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=7402, Unknown=1, NotChecked=0, Total=8190 [2024-11-13 13:33:41,776 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand has 91 states, 91 states have (on average 3.5934065934065935) internal successors, (327), 91 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:48,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:33:52,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:33:58,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:34:02,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:34:07,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:34:28,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:34:42,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:35:02,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:35:06,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:36:10,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:10,150 INFO L93 Difference]: Finished difference Result 279 states and 311 transitions. [2024-11-13 13:36:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-13 13:36:10,159 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.5934065934065935) internal successors, (327), 91 states have internal predecessors, (327), 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 126 [2024-11-13 13:36:10,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:10,160 INFO L225 Difference]: With dead ends: 279 [2024-11-13 13:36:10,160 INFO L226 Difference]: Without dead ends: 176 [2024-11-13 13:36:10,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 186 SyntacticMatches, 15 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3529 ImplicationChecksByTransitivity, 139.6s TimeCoverageRelationStatistics Valid=1954, Invalid=14557, Unknown=1, NotChecked=0, Total=16512 [2024-11-13 13:36:10,162 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 700 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 3701 mSolverCounterSat, 151 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 3861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3701 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:10,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1768 Invalid, 3861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3701 Invalid, 9 Unknown, 0 Unchecked, 37.0s Time] [2024-11-13 13:36:10,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-13 13:36:10,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 167. [2024-11-13 13:36:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.108433734939759) internal successors, (184), 166 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 184 transitions. [2024-11-13 13:36:10,166 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 184 transitions. Word has length 126 [2024-11-13 13:36:10,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:10,166 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 184 transitions. [2024-11-13 13:36:10,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.5934065934065935) internal successors, (327), 91 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:10,166 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 184 transitions. [2024-11-13 13:36:10,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-13 13:36:10,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:10,168 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:10,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 13:36:10,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 13:36:10,368 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:36:10,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2018757977, now seen corresponding path program 28 times [2024-11-13 13:36:10,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:10,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799476683] [2024-11-13 13:36:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:10,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 61 proven. 885 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:12,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:12,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799476683] [2024-11-13 13:36:12,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799476683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:12,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645886390] [2024-11-13 13:36:12,078 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:36:12,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:12,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:12,080 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:12,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 13:36:12,690 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:36:12,690 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:36:12,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-13 13:36:12,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:13,933 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 [2024-11-13 13:36:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 61 proven. 885 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:14,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:14,436 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 15 treesize of output 13 [2024-11-13 13:36:14,439 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 16 treesize of output 12 [2024-11-13 13:36:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 61 proven. 885 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:14,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645886390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:14,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:14,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 60 [2024-11-13 13:36:14,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368060109] [2024-11-13 13:36:14,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:14,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-13 13:36:14,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:14,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-13 13:36:14,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=3389, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 13:36:14,710 INFO L87 Difference]: Start difference. First operand 167 states and 184 transitions. Second operand has 60 states, 60 states have (on average 3.216666666666667) internal successors, (193), 60 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:18,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:18,931 INFO L93 Difference]: Finished difference Result 282 states and 314 transitions. [2024-11-13 13:36:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 13:36:18,931 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.216666666666667) internal successors, (193), 60 states have internal predecessors, (193), 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 134 [2024-11-13 13:36:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:18,933 INFO L225 Difference]: With dead ends: 282 [2024-11-13 13:36:18,933 INFO L226 Difference]: Without dead ends: 172 [2024-11-13 13:36:18,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=235, Invalid=5465, Unknown=0, NotChecked=0, Total=5700 [2024-11-13 13:36:18,934 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 54 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 5189 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 5220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 5189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:18,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2927 Invalid, 5220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 5189 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-13 13:36:18,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-13 13:36:18,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2024-11-13 13:36:18,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.106508875739645) internal successors, (187), 169 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2024-11-13 13:36:18,938 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 134 [2024-11-13 13:36:18,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:18,938 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2024-11-13 13:36:18,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.216666666666667) internal successors, (193), 60 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2024-11-13 13:36:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-13 13:36:18,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:18,940 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:18,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 13:36:19,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 13:36:19,141 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:36:19,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash -410194863, now seen corresponding path program 29 times [2024-11-13 13:36:19,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:19,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142115332] [2024-11-13 13:36:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:19,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 287 proven. 705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:21,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:21,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142115332] [2024-11-13 13:36:21,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142115332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:21,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376412296] [2024-11-13 13:36:21,255 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:36:21,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:21,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:21,257 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:21,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 13:36:21,640 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-13 13:36:21,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:36:21,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-13 13:36:21,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:21,656 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 [2024-11-13 13:36:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 330 proven. 662 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:23,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 330 proven. 662 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:26,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376412296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:26,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:26,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 90 [2024-11-13 13:36:26,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416367522] [2024-11-13 13:36:26,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:26,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-13 13:36:26,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:26,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-13 13:36:26,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1160, Invalid=7030, Unknown=0, NotChecked=0, Total=8190 [2024-11-13 13:36:26,626 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 91 states, 90 states have (on average 3.6555555555555554) internal successors, (329), 91 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:29,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:29,559 INFO L93 Difference]: Finished difference Result 183 states and 202 transitions. [2024-11-13 13:36:29,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 13:36:29,560 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 3.6555555555555554) internal successors, (329), 91 states have internal predecessors, (329), 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 137 [2024-11-13 13:36:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:29,561 INFO L225 Difference]: With dead ends: 183 [2024-11-13 13:36:29,561 INFO L226 Difference]: Without dead ends: 183 [2024-11-13 13:36:29,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3072 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1212, Invalid=7160, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 13:36:29,563 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 279 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:29,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 2012 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3393 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 13:36:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-13 13:36:29,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 177. [2024-11-13 13:36:29,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.1079545454545454) internal successors, (195), 176 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:29,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 195 transitions. [2024-11-13 13:36:29,567 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 195 transitions. Word has length 137 [2024-11-13 13:36:29,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:29,568 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 195 transitions. [2024-11-13 13:36:29,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 3.6555555555555554) internal successors, (329), 91 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 195 transitions. [2024-11-13 13:36:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-13 13:36:29,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:29,569 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:29,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 13:36:29,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:29,770 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:36:29,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash 817661521, now seen corresponding path program 30 times [2024-11-13 13:36:29,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:29,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436659228] [2024-11-13 13:36:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:29,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 65 proven. 1008 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:31,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:31,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436659228] [2024-11-13 13:36:31,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436659228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:31,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746728788] [2024-11-13 13:36:31,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:36:31,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:31,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:31,651 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:31,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 13:36:32,432 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-13 13:36:32,432 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:36:32,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-13 13:36:32,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:33,648 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 [2024-11-13 13:36:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 65 proven. 1008 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:33,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:34,164 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 15 treesize of output 13 [2024-11-13 13:36:34,166 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 16 treesize of output 12 [2024-11-13 13:36:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 65 proven. 1008 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:34,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746728788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:34,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:34,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 63 [2024-11-13 13:36:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367255122] [2024-11-13 13:36:34,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:34,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 13:36:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 13:36:34,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=3748, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 13:36:34,434 INFO L87 Difference]: Start difference. First operand 177 states and 195 transitions. Second operand has 63 states, 63 states have (on average 3.238095238095238) internal successors, (204), 63 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:39,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:39,237 INFO L93 Difference]: Finished difference Result 299 states and 333 transitions. [2024-11-13 13:36:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 13:36:39,238 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.238095238095238) internal successors, (204), 63 states have internal predecessors, (204), 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 142 [2024-11-13 13:36:39,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:39,239 INFO L225 Difference]: With dead ends: 299 [2024-11-13 13:36:39,239 INFO L226 Difference]: Without dead ends: 182 [2024-11-13 13:36:39,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=247, Invalid=6073, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 13:36:39,241 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 55 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 5516 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3114 SdHoareTripleChecker+Invalid, 5548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:39,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3114 Invalid, 5548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 5516 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-13 13:36:39,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-13 13:36:39,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2024-11-13 13:36:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.106145251396648) internal successors, (198), 179 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2024-11-13 13:36:39,245 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 142 [2024-11-13 13:36:39,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:39,246 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 198 transitions. [2024-11-13 13:36:39,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.238095238095238) internal successors, (204), 63 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 198 transitions. [2024-11-13 13:36:39,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-13 13:36:39,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:39,247 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:39,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 13:36:39,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:39,448 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:36:39,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:39,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1706691077, now seen corresponding path program 31 times [2024-11-13 13:36:39,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:39,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943003381] [2024-11-13 13:36:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:39,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 330 proven. 792 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:41,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:41,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943003381] [2024-11-13 13:36:41,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943003381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:41,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063419828] [2024-11-13 13:36:41,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:36:41,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:41,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:41,676 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:41,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 13:36:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:41,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-13 13:36:41,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 376 proven. 746 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:43,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:45,022 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 5 treesize of output 3 [2024-11-13 13:36:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 376 proven. 746 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:45,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063419828] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:45,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:45,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39, 39] total 79 [2024-11-13 13:36:45,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090675020] [2024-11-13 13:36:45,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:45,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-13 13:36:45,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:45,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-13 13:36:45,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=5553, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 13:36:45,895 INFO L87 Difference]: Start difference. First operand 180 states and 198 transitions. Second operand has 80 states, 79 states have (on average 3.721518987341772) internal successors, (294), 80 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:49,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:49,020 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2024-11-13 13:36:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 13:36:49,020 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 3.721518987341772) internal successors, (294), 80 states have internal predecessors, (294), 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 145 [2024-11-13 13:36:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:49,021 INFO L225 Difference]: With dead ends: 193 [2024-11-13 13:36:49,021 INFO L226 Difference]: Without dead ends: 193 [2024-11-13 13:36:49,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 230 SyntacticMatches, 18 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3379 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=804, Invalid=5676, Unknown=0, NotChecked=0, Total=6480 [2024-11-13 13:36:49,022 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 231 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 4239 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 2508 SdHoareTripleChecker+Invalid, 4240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:49,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 2508 Invalid, 4240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4239 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 13:36:49,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-13 13:36:49,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2024-11-13 13:36:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.10752688172043) internal successors, (206), 186 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 206 transitions. [2024-11-13 13:36:49,027 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 206 transitions. Word has length 145 [2024-11-13 13:36:49,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:49,028 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 206 transitions. [2024-11-13 13:36:49,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 3.721518987341772) internal successors, (294), 80 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 206 transitions. [2024-11-13 13:36:49,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-13 13:36:49,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:49,029 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:49,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 13:36:49,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-13 13:36:49,230 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:36:49,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash -950470937, now seen corresponding path program 32 times [2024-11-13 13:36:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:49,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533511850] [2024-11-13 13:36:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 69 proven. 1139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:51,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:51,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533511850] [2024-11-13 13:36:51,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533511850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:51,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370046757] [2024-11-13 13:36:51,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:36:51,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:51,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:51,563 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:51,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 13:36:51,815 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:36:51,815 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:36:51,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-13 13:36:51,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:52,990 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 [2024-11-13 13:36:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 69 proven. 1139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:53,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:53,494 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 15 treesize of output 13 [2024-11-13 13:36:53,496 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 16 treesize of output 12 [2024-11-13 13:36:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 69 proven. 1139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:53,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370046757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:53,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:53,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 66 [2024-11-13 13:36:53,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724275411] [2024-11-13 13:36:53,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:53,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-13 13:36:53,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:53,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-13 13:36:53,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=4125, Unknown=0, NotChecked=0, Total=4290 [2024-11-13 13:36:53,770 INFO L87 Difference]: Start difference. First operand 187 states and 206 transitions. Second operand has 66 states, 66 states have (on average 3.257575757575758) internal successors, (215), 66 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:58,199 INFO L93 Difference]: Finished difference Result 316 states and 352 transitions. [2024-11-13 13:36:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-13 13:36:58,199 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.257575757575758) internal successors, (215), 66 states have internal predecessors, (215), 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 150 [2024-11-13 13:36:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:58,200 INFO L225 Difference]: With dead ends: 316 [2024-11-13 13:36:58,200 INFO L226 Difference]: Without dead ends: 192 [2024-11-13 13:36:58,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=259, Invalid=6713, Unknown=0, NotChecked=0, Total=6972 [2024-11-13 13:36:58,200 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 60 mSDsluCounter, 3365 mSDsCounter, 0 mSdLazyCounter, 6233 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 6268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 6233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:58,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3439 Invalid, 6268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 6233 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-13 13:36:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-13 13:36:58,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2024-11-13 13:36:58,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.1058201058201058) internal successors, (209), 189 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2024-11-13 13:36:58,205 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 150 [2024-11-13 13:36:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:58,205 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2024-11-13 13:36:58,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.257575757575758) internal successors, (215), 66 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2024-11-13 13:36:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-13 13:36:58,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:58,206 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:58,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 13:36:58,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-13 13:36:58,407 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:36:58,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:58,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1183507311, now seen corresponding path program 33 times [2024-11-13 13:36:58,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:58,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093222473] [2024-11-13 13:36:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:58,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 376 proven. 884 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:00,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:37:00,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093222473] [2024-11-13 13:37:00,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093222473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:37:00,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45146385] [2024-11-13 13:37:00,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:37:00,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:37:00,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:37:00,680 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:37:00,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 13:37:01,376 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-13 13:37:01,376 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:37:01,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-13 13:37:01,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:37:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 425 proven. 835 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:03,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:37:05,580 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 7 treesize of output 5 [2024-11-13 13:37:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 425 proven. 835 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:06,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45146385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:37:06,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:37:06,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41, 41] total 101 [2024-11-13 13:37:06,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964166006] [2024-11-13 13:37:06,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:37:06,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-11-13 13:37:06,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:37:06,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-11-13 13:37:06,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1564, Invalid=8738, Unknown=0, NotChecked=0, Total=10302 [2024-11-13 13:37:06,421 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand has 102 states, 101 states have (on average 3.9207920792079207) internal successors, (396), 102 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:08,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:37:08,327 INFO L93 Difference]: Finished difference Result 203 states and 224 transitions. [2024-11-13 13:37:08,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-13 13:37:08,328 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 3.9207920792079207) internal successors, (396), 102 states have internal predecessors, (396), 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 153 [2024-11-13 13:37:08,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:37:08,329 INFO L225 Difference]: With dead ends: 203 [2024-11-13 13:37:08,329 INFO L226 Difference]: Without dead ends: 203 [2024-11-13 13:37:08,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 225 SyntacticMatches, 19 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5383 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1603, Invalid=8903, Unknown=0, NotChecked=0, Total=10506 [2024-11-13 13:37:08,330 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 290 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 2991 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 2992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:37:08,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1688 Invalid, 2992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2991 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 13:37:08,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-13 13:37:08,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2024-11-13 13:37:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.1071428571428572) internal successors, (217), 196 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 217 transitions. [2024-11-13 13:37:08,334 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 217 transitions. Word has length 153 [2024-11-13 13:37:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:37:08,335 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 217 transitions. [2024-11-13 13:37:08,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 3.9207920792079207) internal successors, (396), 102 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:08,335 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 217 transitions. [2024-11-13 13:37:08,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-13 13:37:08,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:37:08,336 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:37:08,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 13:37:08,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-13 13:37:08,536 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:37:08,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:37:08,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1515684335, now seen corresponding path program 34 times [2024-11-13 13:37:08,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:37:08,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498331664] [2024-11-13 13:37:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:37:08,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:37:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 73 proven. 1278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:10,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:37:10,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498331664] [2024-11-13 13:37:10,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498331664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:37:10,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116902008] [2024-11-13 13:37:10,617 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:37:10,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:37:10,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:37:10,620 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:37:10,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 13:37:11,011 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:37:11,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:37:11,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-13 13:37:11,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:37:12,197 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 [2024-11-13 13:37:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 73 proven. 1278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:12,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:37:12,680 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 15 treesize of output 13 [2024-11-13 13:37:12,682 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 16 treesize of output 12 [2024-11-13 13:37:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 73 proven. 1278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:12,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116902008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:37:12,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:37:12,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 69 [2024-11-13 13:37:12,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952490197] [2024-11-13 13:37:12,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:37:12,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-13 13:37:12,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:37:12,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-13 13:37:12,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=4520, Unknown=0, NotChecked=0, Total=4692 [2024-11-13 13:37:12,920 INFO L87 Difference]: Start difference. First operand 197 states and 217 transitions. Second operand has 69 states, 69 states have (on average 3.2753623188405796) internal successors, (226), 69 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:17,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:37:17,712 INFO L93 Difference]: Finished difference Result 333 states and 371 transitions. [2024-11-13 13:37:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 13:37:17,713 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.2753623188405796) internal successors, (226), 69 states have internal predecessors, (226), 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 158 [2024-11-13 13:37:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:37:17,713 INFO L225 Difference]: With dead ends: 333 [2024-11-13 13:37:17,714 INFO L226 Difference]: Without dead ends: 202 [2024-11-13 13:37:17,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=271, Invalid=7385, Unknown=0, NotChecked=0, Total=7656 [2024-11-13 13:37:17,714 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 65 mSDsluCounter, 3854 mSDsCounter, 0 mSdLazyCounter, 6930 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 3932 SdHoareTripleChecker+Invalid, 6967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 6930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:37:17,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 3932 Invalid, 6967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 6930 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-13 13:37:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-13 13:37:17,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2024-11-13 13:37:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.1055276381909547) internal successors, (220), 199 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2024-11-13 13:37:17,718 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 158 [2024-11-13 13:37:17,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:37:17,718 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 220 transitions. [2024-11-13 13:37:17,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.2753623188405796) internal successors, (226), 69 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:17,718 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 220 transitions. [2024-11-13 13:37:17,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-13 13:37:17,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:37:17,719 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:37:17,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 13:37:17,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-13 13:37:17,919 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:37:17,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:37:17,920 INFO L85 PathProgramCache]: Analyzing trace with hash 356604347, now seen corresponding path program 35 times [2024-11-13 13:37:17,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:37:17,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061585190] [2024-11-13 13:37:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:37:17,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:37:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 425 proven. 981 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:20,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:37:20,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061585190] [2024-11-13 13:37:20,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061585190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:37:20,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880447894] [2024-11-13 13:37:20,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:37:20,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:37:20,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:37:20,167 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:37:20,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 13:37:20,656 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-13 13:37:20,656 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:37:20,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-13 13:37:20,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:37:20,671 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 [2024-11-13 13:37:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 477 proven. 929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:22,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:37:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 477 proven. 929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:26,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880447894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:37:26,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:37:26,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 105 [2024-11-13 13:37:26,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652682519] [2024-11-13 13:37:26,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:37:26,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-11-13 13:37:26,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:37:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-11-13 13:37:26,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1571, Invalid=9559, Unknown=0, NotChecked=0, Total=11130 [2024-11-13 13:37:26,173 INFO L87 Difference]: Start difference. First operand 200 states and 220 transitions. Second operand has 106 states, 105 states have (on average 3.676190476190476) internal successors, (386), 106 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:29,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:37:29,066 INFO L93 Difference]: Finished difference Result 213 states and 235 transitions. [2024-11-13 13:37:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-13 13:37:29,066 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 3.676190476190476) internal successors, (386), 106 states have internal predecessors, (386), 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 161 [2024-11-13 13:37:29,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:37:29,067 INFO L225 Difference]: With dead ends: 213 [2024-11-13 13:37:29,068 INFO L226 Difference]: Without dead ends: 213 [2024-11-13 13:37:29,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4278 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1632, Invalid=9710, Unknown=0, NotChecked=0, Total=11342 [2024-11-13 13:37:29,068 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 359 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 4430 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 4431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:37:29,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 2545 Invalid, 4431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4430 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 13:37:29,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-13 13:37:29,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2024-11-13 13:37:29,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.1067961165048543) internal successors, (228), 206 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 228 transitions. [2024-11-13 13:37:29,072 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 228 transitions. Word has length 161 [2024-11-13 13:37:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:37:29,072 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 228 transitions. [2024-11-13 13:37:29,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 3.676190476190476) internal successors, (386), 106 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 228 transitions. [2024-11-13 13:37:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-13 13:37:29,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:37:29,073 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:37:29,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 13:37:29,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-13 13:37:29,274 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:37:29,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:37:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash 681962279, now seen corresponding path program 36 times [2024-11-13 13:37:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:37:29,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77946310] [2024-11-13 13:37:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:37:29,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:37:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1502 backedges. 77 proven. 1425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:31,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:37:31,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77946310] [2024-11-13 13:37:31,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77946310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:37:31,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956768225] [2024-11-13 13:37:31,657 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:37:31,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:37:31,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:37:31,658 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:37:31,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 13:37:32,750 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-13 13:37:32,750 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:37:32,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-11-13 13:37:32,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:37:34,039 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 [2024-11-13 13:37:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1502 backedges. 77 proven. 1425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:34,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:37:34,584 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 15 treesize of output 13 [2024-11-13 13:37:34,588 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 16 treesize of output 12 [2024-11-13 13:37:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1502 backedges. 77 proven. 1425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:34,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956768225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:37:34,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:37:34,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 73 [2024-11-13 13:37:34,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855376458] [2024-11-13 13:37:34,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:37:34,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-13 13:37:34,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:37:34,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-13 13:37:34,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=5073, Unknown=0, NotChecked=0, Total=5256 [2024-11-13 13:37:34,832 INFO L87 Difference]: Start difference. First operand 207 states and 228 transitions. Second operand has 73 states, 73 states have (on average 3.2739726027397262) internal successors, (239), 73 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:39,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:37:39,978 INFO L93 Difference]: Finished difference Result 350 states and 390 transitions. [2024-11-13 13:37:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-13 13:37:39,978 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.2739726027397262) internal successors, (239), 73 states have internal predecessors, (239), 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 166 [2024-11-13 13:37:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:37:39,979 INFO L225 Difference]: With dead ends: 350 [2024-11-13 13:37:39,979 INFO L226 Difference]: Without dead ends: 212 [2024-11-13 13:37:39,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=283, Invalid=8089, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 13:37:39,980 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 63 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 7698 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 7736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 7698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:37:39,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4285 Invalid, 7736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 7698 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 13:37:39,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-13 13:37:39,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2024-11-13 13:37:39,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.105263157894737) internal successors, (231), 209 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:39,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 231 transitions. [2024-11-13 13:37:39,988 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 231 transitions. Word has length 166 [2024-11-13 13:37:39,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:37:39,988 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 231 transitions. [2024-11-13 13:37:39,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.2739726027397262) internal successors, (239), 73 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:39,988 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 231 transitions. [2024-11-13 13:37:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-13 13:37:39,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:37:39,989 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:37:40,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-13 13:37:40,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-13 13:37:40,190 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:37:40,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:37:40,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2136638255, now seen corresponding path program 37 times [2024-11-13 13:37:40,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:37:40,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017200161] [2024-11-13 13:37:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:37:40,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:37:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 477 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:42,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:37:42,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017200161] [2024-11-13 13:37:42,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017200161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:37:42,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962040754] [2024-11-13 13:37:42,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:37:42,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:37:42,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:37:42,502 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:37:42,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 13:37:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:42,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-13 13:37:42,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:37:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 532 proven. 1028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:44,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:37:46,231 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 5 treesize of output 3 [2024-11-13 13:37:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 532 proven. 1028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:47,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962040754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:37:47,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:37:47,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 45, 45] total 91 [2024-11-13 13:37:47,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319600012] [2024-11-13 13:37:47,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:37:47,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-13 13:37:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:37:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-13 13:37:47,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1016, Invalid=7356, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 13:37:47,289 INFO L87 Difference]: Start difference. First operand 210 states and 231 transitions. Second operand has 92 states, 91 states have (on average 3.758241758241758) internal successors, (342), 92 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:50,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:37:50,445 INFO L93 Difference]: Finished difference Result 223 states and 246 transitions. [2024-11-13 13:37:50,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-13 13:37:50,446 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 3.758241758241758) internal successors, (342), 92 states have internal predecessors, (342), 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 169 [2024-11-13 13:37:50,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:37:50,447 INFO L225 Difference]: With dead ends: 223 [2024-11-13 13:37:50,447 INFO L226 Difference]: Without dead ends: 223 [2024-11-13 13:37:50,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 269 SyntacticMatches, 21 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4576 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1059, Invalid=7497, Unknown=0, NotChecked=0, Total=8556 [2024-11-13 13:37:50,448 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 543 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 4371 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 4372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:37:50,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 2447 Invalid, 4372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4371 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 13:37:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-13 13:37:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2024-11-13 13:37:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.1064814814814814) internal successors, (239), 216 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:50,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 239 transitions. [2024-11-13 13:37:50,450 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 239 transitions. Word has length 169 [2024-11-13 13:37:50,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:37:50,450 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 239 transitions. [2024-11-13 13:37:50,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 3.758241758241758) internal successors, (342), 92 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:50,450 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 239 transitions. [2024-11-13 13:37:50,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-13 13:37:50,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:37:50,451 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:37:50,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-13 13:37:50,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-13 13:37:50,652 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:37:50,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:37:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash 451560913, now seen corresponding path program 38 times [2024-11-13 13:37:50,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:37:50,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938304510] [2024-11-13 13:37:50,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:37:50,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:37:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 81 proven. 1580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:53,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:37:53,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938304510] [2024-11-13 13:37:53,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938304510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:37:53,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864803559] [2024-11-13 13:37:53,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:37:53,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:37:53,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:37:53,328 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:37:53,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-13 13:37:53,614 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:37:53,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:37:53,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 140 conjuncts are in the unsatisfiable core [2024-11-13 13:37:53,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:37:55,104 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 [2024-11-13 13:37:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 81 proven. 1580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:55,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:37:55,627 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 15 treesize of output 13 [2024-11-13 13:37:55,630 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 16 treesize of output 12 [2024-11-13 13:37:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 81 proven. 1580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:55,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864803559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:37:55,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:37:55,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 75 [2024-11-13 13:37:55,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62741815] [2024-11-13 13:37:55,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:37:55,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-13 13:37:55,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:37:55,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-13 13:37:55,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=5364, Unknown=0, NotChecked=0, Total=5550 [2024-11-13 13:37:55,902 INFO L87 Difference]: Start difference. First operand 217 states and 239 transitions. Second operand has 75 states, 75 states have (on average 3.3066666666666666) internal successors, (248), 75 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:02,076 INFO L93 Difference]: Finished difference Result 367 states and 409 transitions. [2024-11-13 13:38:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-13 13:38:02,077 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.3066666666666666) internal successors, (248), 75 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2024-11-13 13:38:02,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:02,078 INFO L225 Difference]: With dead ends: 367 [2024-11-13 13:38:02,078 INFO L226 Difference]: Without dead ends: 222 [2024-11-13 13:38:02,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=295, Invalid=8825, Unknown=0, NotChecked=0, Total=9120 [2024-11-13 13:38:02,079 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 71 mSDsluCounter, 4431 mSDsCounter, 0 mSdLazyCounter, 8069 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 4517 SdHoareTripleChecker+Invalid, 8110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 8069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:02,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 4517 Invalid, 8110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 8069 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-13 13:38:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-13 13:38:02,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2024-11-13 13:38:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.1050228310502284) internal successors, (242), 219 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2024-11-13 13:38:02,083 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 174 [2024-11-13 13:38:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:02,084 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2024-11-13 13:38:02,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.3066666666666666) internal successors, (248), 75 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2024-11-13 13:38:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-13 13:38:02,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:02,085 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:38:02,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-13 13:38:02,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:02,286 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:38:02,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:02,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1010470267, now seen corresponding path program 39 times [2024-11-13 13:38:02,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:02,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447293860] [2024-11-13 13:38:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:02,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 532 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:05,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:05,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447293860] [2024-11-13 13:38:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447293860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:38:05,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876575421] [2024-11-13 13:38:05,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:38:05,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:05,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:38:05,007 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:38:05,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 13:38:07,400 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-13 13:38:07,400 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:38:07,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-13 13:38:07,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:38:07,414 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 [2024-11-13 13:38:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 590 proven. 1132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:10,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:38:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 590 proven. 1132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:16,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876575421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:38:16,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:38:16,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47, 47] total 138 [2024-11-13 13:38:16,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444454682] [2024-11-13 13:38:16,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:38:16,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-11-13 13:38:16,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:16,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-11-13 13:38:16,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2789, Invalid=16393, Unknown=0, NotChecked=0, Total=19182 [2024-11-13 13:38:16,476 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 139 states, 138 states have (on average 3.8043478260869565) internal successors, (525), 139 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:19,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:19,127 INFO L93 Difference]: Finished difference Result 233 states and 257 transitions. [2024-11-13 13:38:19,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-13 13:38:19,127 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 138 states have (on average 3.8043478260869565) internal successors, (525), 139 states have internal predecessors, (525), 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 177 [2024-11-13 13:38:19,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:19,129 INFO L225 Difference]: With dead ends: 233 [2024-11-13 13:38:19,129 INFO L226 Difference]: Without dead ends: 233 [2024-11-13 13:38:19,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8120 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=2856, Invalid=16604, Unknown=0, NotChecked=0, Total=19460 [2024-11-13 13:38:19,130 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 473 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 3343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:19,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 2230 Invalid, 3343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-13 13:38:19,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-13 13:38:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 227. [2024-11-13 13:38:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.1061946902654867) internal successors, (250), 226 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 250 transitions. [2024-11-13 13:38:19,135 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 250 transitions. Word has length 177 [2024-11-13 13:38:19,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:19,135 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 250 transitions. [2024-11-13 13:38:19,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 138 states have (on average 3.8043478260869565) internal successors, (525), 139 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 250 transitions. [2024-11-13 13:38:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-13 13:38:19,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:19,137 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:38:19,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-13 13:38:19,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:19,338 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:38:19,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:19,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1005121689, now seen corresponding path program 40 times [2024-11-13 13:38:19,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:19,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374526181] [2024-11-13 13:38:19,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:19,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 85 proven. 1743 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:22,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:22,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374526181] [2024-11-13 13:38:22,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374526181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:38:22,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622181657] [2024-11-13 13:38:22,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:38:22,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:22,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:38:22,490 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:38:22,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-13 13:38:23,554 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:38:23,554 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:38:23,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 146 conjuncts are in the unsatisfiable core [2024-11-13 13:38:23,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:38:25,523 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 [2024-11-13 13:38:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 85 proven. 1743 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:25,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:38:26,183 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 15 treesize of output 13 [2024-11-13 13:38:26,185 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 16 treesize of output 12 [2024-11-13 13:38:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 85 proven. 1743 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:26,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622181657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:38:26,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:38:26,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 78 [2024-11-13 13:38:26,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087421341] [2024-11-13 13:38:26,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:38:26,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-13 13:38:26,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:26,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-13 13:38:26,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=5813, Unknown=0, NotChecked=0, Total=6006 [2024-11-13 13:38:26,530 INFO L87 Difference]: Start difference. First operand 227 states and 250 transitions. Second operand has 78 states, 78 states have (on average 3.3205128205128207) internal successors, (259), 78 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:34,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:34,308 INFO L93 Difference]: Finished difference Result 384 states and 428 transitions. [2024-11-13 13:38:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-13 13:38:34,309 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.3205128205128207) internal successors, (259), 78 states have internal predecessors, (259), 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 182 [2024-11-13 13:38:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:34,309 INFO L225 Difference]: With dead ends: 384 [2024-11-13 13:38:34,309 INFO L226 Difference]: Without dead ends: 232 [2024-11-13 13:38:34,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=307, Invalid=9593, Unknown=0, NotChecked=0, Total=9900 [2024-11-13 13:38:34,310 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 72 mSDsluCounter, 4905 mSDsCounter, 0 mSdLazyCounter, 8873 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4995 SdHoareTripleChecker+Invalid, 8916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 8873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:34,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 4995 Invalid, 8916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 8873 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-13 13:38:34,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-13 13:38:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2024-11-13 13:38:34,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.1048034934497817) internal successors, (253), 229 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 253 transitions. [2024-11-13 13:38:34,314 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 253 transitions. Word has length 182 [2024-11-13 13:38:34,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:34,314 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 253 transitions. [2024-11-13 13:38:34,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 3.3205128205128207) internal successors, (259), 78 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 253 transitions. [2024-11-13 13:38:34,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-13 13:38:34,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:34,315 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:38:34,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-13 13:38:34,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:34,516 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:38:34,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash 94506257, now seen corresponding path program 41 times [2024-11-13 13:38:34,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:34,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002661668] [2024-11-13 13:38:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:34,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 590 proven. 1302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:37,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002661668] [2024-11-13 13:38:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002661668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:38:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870801127] [2024-11-13 13:38:37,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:38:37,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:38:37,238 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:38:37,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-13 13:38:37,979 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-11-13 13:38:37,979 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:38:37,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-13 13:38:37,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:38:37,995 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 [2024-11-13 13:38:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 651 proven. 1241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:40,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:38:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 651 proven. 1241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:46,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870801127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:38:46,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:38:46,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 120 [2024-11-13 13:38:46,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196840713] [2024-11-13 13:38:46,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:38:46,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-11-13 13:38:46,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:38:46,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-11-13 13:38:46,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2045, Invalid=12475, Unknown=0, NotChecked=0, Total=14520 [2024-11-13 13:38:46,444 INFO L87 Difference]: Start difference. First operand 230 states and 253 transitions. Second operand has 121 states, 120 states have (on average 3.691666666666667) internal successors, (443), 121 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:51,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:38:51,266 INFO L93 Difference]: Finished difference Result 243 states and 268 transitions. [2024-11-13 13:38:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-13 13:38:51,267 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 3.691666666666667) internal successors, (443), 121 states have internal predecessors, (443), 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 185 [2024-11-13 13:38:51,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:38:51,268 INFO L225 Difference]: With dead ends: 243 [2024-11-13 13:38:51,268 INFO L226 Difference]: Without dead ends: 243 [2024-11-13 13:38:51,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5682 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=2115, Invalid=12647, Unknown=0, NotChecked=0, Total=14762 [2024-11-13 13:38:51,269 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 545 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 5596 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 5597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:38:51,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 3009 Invalid, 5597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5596 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 13:38:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-13 13:38:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 237. [2024-11-13 13:38:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.1059322033898304) internal successors, (261), 236 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 261 transitions. [2024-11-13 13:38:51,274 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 261 transitions. Word has length 185 [2024-11-13 13:38:51,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:38:51,274 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 261 transitions. [2024-11-13 13:38:51,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 120 states have (on average 3.691666666666667) internal successors, (443), 121 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:38:51,274 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 261 transitions. [2024-11-13 13:38:51,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-13 13:38:51,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:38:51,276 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:38:51,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-13 13:38:51,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:51,476 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:38:51,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:38:51,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2055069073, now seen corresponding path program 42 times [2024-11-13 13:38:51,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:38:51,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921726434] [2024-11-13 13:38:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:38:51,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:38:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:38:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2003 backedges. 89 proven. 1914 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:38:54,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:38:54,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921726434] [2024-11-13 13:38:54,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921726434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:38:54,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655699463] [2024-11-13 13:38:54,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:38:54,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:38:54,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:38:54,882 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:38:54,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-13 13:38:57,766 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-11-13 13:38:57,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:38:57,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 154 conjuncts are in the unsatisfiable core [2024-11-13 13:38:57,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:39:00,024 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 [2024-11-13 13:39:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2003 backedges. 89 proven. 1914 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:00,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:39:00,679 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 15 treesize of output 13 [2024-11-13 13:39:00,681 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 16 treesize of output 12 [2024-11-13 13:39:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2003 backedges. 89 proven. 1914 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:01,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655699463] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:39:01,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:39:01,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 81 [2024-11-13 13:39:01,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274007585] [2024-11-13 13:39:01,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:39:01,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-13 13:39:01,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:39:01,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-13 13:39:01,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=6280, Unknown=0, NotChecked=0, Total=6480 [2024-11-13 13:39:01,013 INFO L87 Difference]: Start difference. First operand 237 states and 261 transitions. Second operand has 81 states, 81 states have (on average 3.3333333333333335) internal successors, (270), 81 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:08,864 INFO L93 Difference]: Finished difference Result 401 states and 447 transitions. [2024-11-13 13:39:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-13 13:39:08,865 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 3.3333333333333335) internal successors, (270), 81 states have internal predecessors, (270), 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 190 [2024-11-13 13:39:08,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:08,865 INFO L225 Difference]: With dead ends: 401 [2024-11-13 13:39:08,865 INFO L226 Difference]: Without dead ends: 242 [2024-11-13 13:39:08,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=319, Invalid=10393, Unknown=0, NotChecked=0, Total=10712 [2024-11-13 13:39:08,866 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 77 mSDsluCounter, 5403 mSDsCounter, 0 mSdLazyCounter, 9716 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 5497 SdHoareTripleChecker+Invalid, 9761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 9716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:08,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 5497 Invalid, 9761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 9716 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-13 13:39:08,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-13 13:39:08,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 240. [2024-11-13 13:39:08,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.104602510460251) internal successors, (264), 239 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:08,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 264 transitions. [2024-11-13 13:39:08,869 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 264 transitions. Word has length 190 [2024-11-13 13:39:08,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:08,869 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 264 transitions. [2024-11-13 13:39:08,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 3.3333333333333335) internal successors, (270), 81 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:08,869 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 264 transitions. [2024-11-13 13:39:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-13 13:39:08,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:08,870 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:39:08,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-13 13:39:09,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:39:09,071 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:39:09,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:09,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1456631493, now seen corresponding path program 43 times [2024-11-13 13:39:09,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:39:09,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135543042] [2024-11-13 13:39:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:09,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:39:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 651 proven. 1419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:12,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:39:12,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135543042] [2024-11-13 13:39:12,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135543042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:39:12,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275995522] [2024-11-13 13:39:12,495 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:39:12,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:39:12,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:39:12,497 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:39:12,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 13:39:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:12,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-13 13:39:12,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:39:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 715 proven. 1355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:15,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:39:18,350 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 5 treesize of output 3 [2024-11-13 13:39:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 715 proven. 1355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:19,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275995522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:39:19,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:39:19,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 51, 51] total 103 [2024-11-13 13:39:19,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256128609] [2024-11-13 13:39:19,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:39:19,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-11-13 13:39:19,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:39:19,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-11-13 13:39:19,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1301, Invalid=9411, Unknown=0, NotChecked=0, Total=10712 [2024-11-13 13:39:19,896 INFO L87 Difference]: Start difference. First operand 240 states and 264 transitions. Second operand has 104 states, 103 states have (on average 3.7864077669902914) internal successors, (390), 104 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:24,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:24,188 INFO L93 Difference]: Finished difference Result 253 states and 279 transitions. [2024-11-13 13:39:24,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 13:39:24,189 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 3.7864077669902914) internal successors, (390), 104 states have internal predecessors, (390), 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 193 [2024-11-13 13:39:24,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:24,189 INFO L225 Difference]: With dead ends: 253 [2024-11-13 13:39:24,189 INFO L226 Difference]: Without dead ends: 253 [2024-11-13 13:39:24,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 308 SyntacticMatches, 24 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5953 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1350, Invalid=9570, Unknown=0, NotChecked=0, Total=10920 [2024-11-13 13:39:24,190 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 556 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 6154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 6155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:24,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 3507 Invalid, 6155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6154 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-13 13:39:24,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-13 13:39:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 247. [2024-11-13 13:39:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.1056910569105691) internal successors, (272), 246 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 272 transitions. [2024-11-13 13:39:24,194 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 272 transitions. Word has length 193 [2024-11-13 13:39:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:24,195 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 272 transitions. [2024-11-13 13:39:24,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 3.7864077669902914) internal successors, (390), 104 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:24,195 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 272 transitions. [2024-11-13 13:39:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-13 13:39:24,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:24,196 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:39:24,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-13 13:39:24,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:39:24,397 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:39:24,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:24,397 INFO L85 PathProgramCache]: Analyzing trace with hash -584031321, now seen corresponding path program 44 times [2024-11-13 13:39:24,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:39:24,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831151977] [2024-11-13 13:39:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:24,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:39:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2186 backedges. 93 proven. 2093 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:27,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:39:27,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831151977] [2024-11-13 13:39:27,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831151977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:39:27,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138031335] [2024-11-13 13:39:27,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:39:27,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:39:27,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:39:27,478 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:39:27,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-13 13:39:27,823 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:39:27,824 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:39:27,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-11-13 13:39:27,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:39:30,006 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 [2024-11-13 13:39:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2186 backedges. 93 proven. 2093 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:30,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:39:30,708 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 15 treesize of output 13 [2024-11-13 13:39:30,711 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 16 treesize of output 12 [2024-11-13 13:39:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2186 backedges. 93 proven. 2093 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:31,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138031335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:39:31,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:39:31,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 84 [2024-11-13 13:39:31,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603710569] [2024-11-13 13:39:31,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:39:31,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-13 13:39:31,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:39:31,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-13 13:39:31,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=6765, Unknown=0, NotChecked=0, Total=6972 [2024-11-13 13:39:31,086 INFO L87 Difference]: Start difference. First operand 247 states and 272 transitions. Second operand has 84 states, 84 states have (on average 3.3452380952380953) internal successors, (281), 84 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:38,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:38,502 INFO L93 Difference]: Finished difference Result 418 states and 466 transitions. [2024-11-13 13:39:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-13 13:39:38,502 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.3452380952380953) internal successors, (281), 84 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2024-11-13 13:39:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:38,503 INFO L225 Difference]: With dead ends: 418 [2024-11-13 13:39:38,503 INFO L226 Difference]: Without dead ends: 252 [2024-11-13 13:39:38,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=331, Invalid=11225, Unknown=0, NotChecked=0, Total=11556 [2024-11-13 13:39:38,504 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 76 mSDsluCounter, 5833 mSDsCounter, 0 mSdLazyCounter, 10520 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 5931 SdHoareTripleChecker+Invalid, 10566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 10520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:38,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 5931 Invalid, 10566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 10520 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-13 13:39:38,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-13 13:39:38,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 250. [2024-11-13 13:39:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.104417670682731) internal successors, (275), 249 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:38,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 275 transitions. [2024-11-13 13:39:38,508 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 275 transitions. Word has length 198 [2024-11-13 13:39:38,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:38,509 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 275 transitions. [2024-11-13 13:39:38,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.3452380952380953) internal successors, (281), 84 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:38,509 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 275 transitions. [2024-11-13 13:39:38,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-13 13:39:38,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:38,510 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:39:38,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-13 13:39:38,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:39:38,711 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:39:38,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:38,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1005505873, now seen corresponding path program 45 times [2024-11-13 13:39:38,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:39:38,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202917779] [2024-11-13 13:39:38,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:38,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:39:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 715 proven. 1541 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:42,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:39:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202917779] [2024-11-13 13:39:42,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202917779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:39:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947349970] [2024-11-13 13:39:42,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:39:42,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:39:42,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:39:42,508 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:39:42,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-13 13:39:44,730 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2024-11-13 13:39:44,730 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:39:44,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-13 13:39:44,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:39:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 782 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:49,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:39:53,561 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 7 treesize of output 5 [2024-11-13 13:39:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 782 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:39:55,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947349970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:39:55,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:39:55,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 53, 53] total 131 [2024-11-13 13:39:55,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139646354] [2024-11-13 13:39:55,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:39:55,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2024-11-13 13:39:55,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:39:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2024-11-13 13:39:55,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2650, Invalid=14642, Unknown=0, NotChecked=0, Total=17292 [2024-11-13 13:39:55,385 INFO L87 Difference]: Start difference. First operand 250 states and 275 transitions. Second operand has 132 states, 131 states have (on average 3.984732824427481) internal successors, (522), 132 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:58,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:58,512 INFO L93 Difference]: Finished difference Result 263 states and 290 transitions. [2024-11-13 13:39:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-13 13:39:58,513 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 131 states have (on average 3.984732824427481) internal successors, (522), 132 states have internal predecessors, (522), 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 201 [2024-11-13 13:39:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:58,514 INFO L225 Difference]: With dead ends: 263 [2024-11-13 13:39:58,514 INFO L226 Difference]: Without dead ends: 263 [2024-11-13 13:39:58,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 297 SyntacticMatches, 25 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9268 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=2701, Invalid=14855, Unknown=0, NotChecked=0, Total=17556 [2024-11-13 13:39:58,515 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 429 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 3658 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 3659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:58,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 2253 Invalid, 3659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3658 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 13:39:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-13 13:39:58,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 257. [2024-11-13 13:39:58,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.10546875) internal successors, (283), 256 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 283 transitions. [2024-11-13 13:39:58,519 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 283 transitions. Word has length 201 [2024-11-13 13:39:58,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:58,519 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 283 transitions. [2024-11-13 13:39:58,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 131 states have (on average 3.984732824427481) internal successors, (522), 132 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:39:58,520 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 283 transitions. [2024-11-13 13:39:58,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-13 13:39:58,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:58,521 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:39:58,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-13 13:39:58,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-13 13:39:58,722 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:39:58,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:58,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1667188049, now seen corresponding path program 46 times [2024-11-13 13:39:58,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:39:58,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343398469] [2024-11-13 13:39:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:58,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:39:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2377 backedges. 97 proven. 2280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:40:03,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:40:03,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343398469] [2024-11-13 13:40:03,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343398469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:40:03,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600915663] [2024-11-13 13:40:03,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:40:03,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:40:03,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:40:03,366 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:40:03,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-13 13:40:08,012 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:40:08,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:40:08,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 164 conjuncts are in the unsatisfiable core [2024-11-13 13:40:08,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:40:10,551 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 [2024-11-13 13:40:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2377 backedges. 97 proven. 2280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:40:11,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:40:11,292 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 15 treesize of output 13 [2024-11-13 13:40:11,295 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 16 treesize of output 12 [2024-11-13 13:40:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2377 backedges. 97 proven. 2280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:40:11,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600915663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:40:11,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:40:11,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 87 [2024-11-13 13:40:11,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364595796] [2024-11-13 13:40:11,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:40:11,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-11-13 13:40:11,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:40:11,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-11-13 13:40:11,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=7268, Unknown=0, NotChecked=0, Total=7482 [2024-11-13 13:40:11,700 INFO L87 Difference]: Start difference. First operand 257 states and 283 transitions. Second operand has 87 states, 87 states have (on average 3.3563218390804597) internal successors, (292), 87 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:40:20,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:40:20,828 INFO L93 Difference]: Finished difference Result 435 states and 485 transitions. [2024-11-13 13:40:20,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-13 13:40:20,829 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.3563218390804597) internal successors, (292), 87 states have internal predecessors, (292), 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 206 [2024-11-13 13:40:20,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:40:20,830 INFO L225 Difference]: With dead ends: 435 [2024-11-13 13:40:20,830 INFO L226 Difference]: Without dead ends: 262 [2024-11-13 13:40:20,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=343, Invalid=12089, Unknown=0, NotChecked=0, Total=12432 [2024-11-13 13:40:20,830 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 83 mSDsluCounter, 5974 mSDsCounter, 0 mSdLazyCounter, 10745 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 6076 SdHoareTripleChecker+Invalid, 10794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 10745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:40:20,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 6076 Invalid, 10794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 10745 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-13 13:40:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-13 13:40:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2024-11-13 13:40:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.1042471042471043) internal successors, (286), 259 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:40:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 286 transitions. [2024-11-13 13:40:20,835 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 286 transitions. Word has length 206 [2024-11-13 13:40:20,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:40:20,835 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 286 transitions. [2024-11-13 13:40:20,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.3563218390804597) internal successors, (292), 87 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:40:20,835 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 286 transitions. [2024-11-13 13:40:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-13 13:40:20,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:40:20,837 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:40:20,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-13 13:40:21,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:40:21,037 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:40:21,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:40:21,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1424595717, now seen corresponding path program 47 times [2024-11-13 13:40:21,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:40:21,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865463872] [2024-11-13 13:40:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:40:21,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:40:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 782 proven. 1668 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:40:25,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:40:25,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865463872] [2024-11-13 13:40:25,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865463872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:40:25,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783738772] [2024-11-13 13:40:25,492 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:40:25,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:40:25,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:40:25,494 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:40:25,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-13 13:40:26,958 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-11-13 13:40:26,959 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:40:26,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-13 13:40:26,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:40:26,982 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 [2024-11-13 13:40:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 852 proven. 1598 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:40:30,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:40:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 852 proven. 1598 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:40:38,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783738772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:40:38,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:40:38,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 135 [2024-11-13 13:40:38,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583963791] [2024-11-13 13:40:38,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:40:38,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2024-11-13 13:40:38,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:40:38,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2024-11-13 13:40:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2582, Invalid=15778, Unknown=0, NotChecked=0, Total=18360 [2024-11-13 13:40:38,302 INFO L87 Difference]: Start difference. First operand 260 states and 286 transitions. Second operand has 136 states, 135 states have (on average 3.7037037037037037) internal successors, (500), 136 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:40:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:40:44,303 INFO L93 Difference]: Finished difference Result 273 states and 301 transitions. [2024-11-13 13:40:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-13 13:40:44,304 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 135 states have (on average 3.7037037037037037) internal successors, (500), 136 states have internal predecessors, (500), 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 209 [2024-11-13 13:40:44,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:40:44,305 INFO L225 Difference]: With dead ends: 273 [2024-11-13 13:40:44,305 INFO L226 Difference]: Without dead ends: 273 [2024-11-13 13:40:44,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7284 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=2661, Invalid=15971, Unknown=0, NotChecked=0, Total=18632 [2024-11-13 13:40:44,306 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 607 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 6600 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 3566 SdHoareTripleChecker+Invalid, 6601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:40:44,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 3566 Invalid, 6601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6600 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-13 13:40:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-13 13:40:44,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 267. [2024-11-13 13:40:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.105263157894737) internal successors, (294), 266 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:40:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 294 transitions. [2024-11-13 13:40:44,312 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 294 transitions. Word has length 209 [2024-11-13 13:40:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:40:44,312 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 294 transitions. [2024-11-13 13:40:44,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 135 states have (on average 3.7037037037037037) internal successors, (500), 136 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:40:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 294 transitions. [2024-11-13 13:40:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-13 13:40:44,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:40:44,314 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:40:44,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-13 13:40:44,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:40:44,515 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-13 13:40:44,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:40:44,516 INFO L85 PathProgramCache]: Analyzing trace with hash 578152423, now seen corresponding path program 48 times [2024-11-13 13:40:44,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:40:44,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324821368] [2024-11-13 13:40:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:40:44,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:40:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:40:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2576 backedges. 101 proven. 2475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:40:49,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:40:49,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324821368] [2024-11-13 13:40:49,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324821368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:40:49,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289590757] [2024-11-13 13:40:49,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:40:49,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:40:49,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:40:49,053 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:40:49,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d52d1e3-c542-4bc9-bc1d-3fa2a5ecd674/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-13 13:40:54,011 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-13 13:40:54,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:40:54,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-13 13:40:54,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:40:56,676 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 [2024-11-13 13:41:43,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:41:43,273 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 18 treesize of output 19 [2024-11-13 13:41:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2576 backedges. 852 proven. 1724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:41:44,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:41:57,274 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 [2024-11-13 13:41:57,282 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 [2024-11-13 13:41:57,289 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 7 treesize of output 5 [2024-11-13 13:41:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2576 backedges. 852 proven. 1724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:41:59,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289590757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:41:59,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:41:59,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 146 [2024-11-13 13:41:59,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248484730] [2024-11-13 13:41:59,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:41:59,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-11-13 13:41:59,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:41:59,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-11-13 13:41:59,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2040, Invalid=19128, Unknown=2, NotChecked=0, Total=21170 [2024-11-13 13:41:59,847 INFO L87 Difference]: Start difference. First operand 267 states and 294 transitions. Second operand has 146 states, 146 states have (on average 3.8219178082191783) internal successors, (558), 146 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:42:09,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:42:15,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:42:58,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:43:02,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:43:06,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:43:12,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]