./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/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_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/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 64bit --witnessprinter.graph.data.programhash 7ac435f9525efba17674735293ae04d2f777a83ec5e1b38ed3aaaf0148b05726 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:33:59,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:33:59,592 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-13 16:33:59,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:33:59,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:33:59,619 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:33:59,620 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:33:59,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:33:59,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:33:59,621 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:33:59,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:33:59,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:33:59,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:33:59,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:33:59,622 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:33:59,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:33:59,622 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:33:59,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:33:59,622 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:33:59,622 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:33:59,622 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:33:59,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:33:59,622 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:33:59,623 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:33:59,623 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:33:59,623 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:33:59,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:33:59,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:33:59,624 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:33:59,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:33:59,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:33:59,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:33:59,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:33:59,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:33:59,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:33:59,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:33:59,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:33:59,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:33:59,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:33:59,625 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_76c6c930-2973-444f-bd8f-f0d736a656c4/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ac435f9525efba17674735293ae04d2f777a83ec5e1b38ed3aaaf0148b05726 [2024-11-13 16:33:59,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:34:00,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:34:00,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:34:00,019 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:34:00,019 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:34:00,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i Unable to find full path for "g++" [2024-11-13 16:34:02,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:34:02,643 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:34:02,648 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/sv-benchmarks/c/memsafety-broom/sll-lst-shared.i [2024-11-13 16:34:02,678 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/data/8b890e45a/a0a01e7cc82b43038309390b87dca0aa/FLAG02d67baf8 [2024-11-13 16:34:02,704 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/data/8b890e45a/a0a01e7cc82b43038309390b87dca0aa [2024-11-13 16:34:02,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:34:02,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:34:02,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:34:02,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:34:02,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:34:02,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:34:02" (1/1) ... [2024-11-13 16:34:02,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d7013d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:02, skipping insertion in model container [2024-11-13 16:34:02,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:34:02" (1/1) ... [2024-11-13 16:34:02,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:34:03,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:34:03,217 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:34:03,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:34:03,343 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:34:03,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03 WrapperNode [2024-11-13 16:34:03,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:34:03,346 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:34:03,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:34:03,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:34:03,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (1/1) ... [2024-11-13 16:34:03,372 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (1/1) ... [2024-11-13 16:34:03,395 INFO L138 Inliner]: procedures = 121, calls = 23, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 71 [2024-11-13 16:34:03,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:34:03,396 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:34:03,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:34:03,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:34:03,407 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (1/1) ... [2024-11-13 16:34:03,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (1/1) ... [2024-11-13 16:34:03,411 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (1/1) ... [2024-11-13 16:34:03,438 INFO L175 MemorySlicer]: Split 11 memory accesses to 1 slices as follows [11]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 5 writes are split as follows [5]. [2024-11-13 16:34:03,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (1/1) ... [2024-11-13 16:34:03,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (1/1) ... [2024-11-13 16:34:03,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (1/1) ... [2024-11-13 16:34:03,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (1/1) ... [2024-11-13 16:34:03,454 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (1/1) ... [2024-11-13 16:34:03,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (1/1) ... [2024-11-13 16:34:03,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:34:03,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:34:03,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:34:03,460 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:34:03,461 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (1/1) ... [2024-11-13 16:34:03,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:34:03,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:03,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:34:03,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:34:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:34:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-13 16:34:03,529 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-13 16:34:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:34:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 16:34:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 16:34:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:34:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:34:03,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:34:03,665 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:34:03,668 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:34:04,006 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-11-13 16:34:04,007 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:34:04,020 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:34:04,020 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 16:34:04,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:34:04 BoogieIcfgContainer [2024-11-13 16:34:04,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:34:04,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:34:04,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:34:04,030 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:34:04,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:34:02" (1/3) ... [2024-11-13 16:34:04,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b3af11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:34:04, skipping insertion in model container [2024-11-13 16:34:04,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:34:03" (2/3) ... [2024-11-13 16:34:04,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b3af11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:34:04, skipping insertion in model container [2024-11-13 16:34:04,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:34:04" (3/3) ... [2024-11-13 16:34:04,034 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-lst-shared.i [2024-11-13 16:34:04,053 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:34:04,055 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll-lst-shared.i that has 2 procedures, 75 locations, 1 initial locations, 3 loop locations, and 29 error locations. [2024-11-13 16:34:04,107 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:34:04,127 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;@5b1f26be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:34:04,128 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-13 16:34:04,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 71 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:34:04,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 16:34:04,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:04,145 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 16:34:04,145 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:04,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:04,153 INFO L85 PathProgramCache]: Analyzing trace with hash 34515278, now seen corresponding path program 1 times [2024-11-13 16:34:04,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:04,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814059598] [2024-11-13 16:34:04,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:04,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:04,483 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 16:34:04,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:04,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814059598] [2024-11-13 16:34:04,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814059598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:04,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:04,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:34:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986984362] [2024-11-13 16:34:04,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:04,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:34:04,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:04,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:34:04,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:34:04,534 INFO L87 Difference]: Start difference. First operand has 75 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 71 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:34:04,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:04,673 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2024-11-13 16:34:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:34:04,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-13 16:34:04,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:04,687 INFO L225 Difference]: With dead ends: 74 [2024-11-13 16:34:04,687 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 16:34:04,690 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 16:34:04,695 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 1 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:04,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 120 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:34:04,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 16:34:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-13 16:34:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 68 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:34:04,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-13 16:34:04,756 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 5 [2024-11-13 16:34:04,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:04,757 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-13 16:34:04,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:34:04,757 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-13 16:34:04,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 16:34:04,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:04,759 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 16:34:04,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:34:04,759 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:04,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:04,760 INFO L85 PathProgramCache]: Analyzing trace with hash 34515279, now seen corresponding path program 1 times [2024-11-13 16:34:04,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:04,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066087933] [2024-11-13 16:34:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:04,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:04,903 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 16:34:04,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:04,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066087933] [2024-11-13 16:34:04,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066087933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:04,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:04,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:34:04,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683631796] [2024-11-13 16:34:04,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:04,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:34:04,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:04,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:34:04,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:34:04,906 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:34:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:04,981 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2024-11-13 16:34:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:34:04,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-13 16:34:04,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:04,983 INFO L225 Difference]: With dead ends: 71 [2024-11-13 16:34:04,983 INFO L226 Difference]: Without dead ends: 71 [2024-11-13 16:34:04,983 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 16:34:04,984 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:04,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 124 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:34:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-13 16:34:04,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-13 16:34:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 67 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:34:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2024-11-13 16:34:04,992 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 5 [2024-11-13 16:34:04,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:04,992 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2024-11-13 16:34:04,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:34:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2024-11-13 16:34:04,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 16:34:04,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:04,993 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:04,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:34:04,994 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:04,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:04,995 INFO L85 PathProgramCache]: Analyzing trace with hash -44799900, now seen corresponding path program 1 times [2024-11-13 16:34:04,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:04,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452902994] [2024-11-13 16:34:04,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:04,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:05,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:05,193 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 16:34:05,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:05,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452902994] [2024-11-13 16:34:05,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452902994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:05,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:05,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:34:05,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795659400] [2024-11-13 16:34:05,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:05,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:34:05,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:34:05,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:34:05,200 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:05,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:05,375 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2024-11-13 16:34:05,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:34:05,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-13 16:34:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:05,378 INFO L225 Difference]: With dead ends: 75 [2024-11-13 16:34:05,378 INFO L226 Difference]: Without dead ends: 75 [2024-11-13 16:34:05,378 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 16:34:05,379 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:05,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 141 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:05,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-13 16:34:05,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2024-11-13 16:34:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 66 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:34:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2024-11-13 16:34:05,389 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 10 [2024-11-13 16:34:05,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:05,389 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2024-11-13 16:34:05,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:05,390 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2024-11-13 16:34:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 16:34:05,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:05,392 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:05,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:34:05,392 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:05,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:05,393 INFO L85 PathProgramCache]: Analyzing trace with hash -44799899, now seen corresponding path program 1 times [2024-11-13 16:34:05,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:05,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333259019] [2024-11-13 16:34:05,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:05,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:05,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:05,614 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 16:34:05,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:05,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333259019] [2024-11-13 16:34:05,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333259019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:05,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:05,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:34:05,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169024653] [2024-11-13 16:34:05,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:05,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:34:05,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:05,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:34:05,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:34:05,618 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:05,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:05,780 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2024-11-13 16:34:05,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:34:05,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-13 16:34:05,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:05,782 INFO L225 Difference]: With dead ends: 74 [2024-11-13 16:34:05,782 INFO L226 Difference]: Without dead ends: 74 [2024-11-13 16:34:05,783 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 16:34:05,784 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 9 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:05,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 147 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:34:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-13 16:34:05,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2024-11-13 16:34:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 65 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:34:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-13 16:34:05,798 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 10 [2024-11-13 16:34:05,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:05,798 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-13 16:34:05,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:05,798 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-13 16:34:05,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 16:34:05,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:05,803 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:05,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:34:05,803 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:05,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash -103031451, now seen corresponding path program 1 times [2024-11-13 16:34:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:05,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054882941] [2024-11-13 16:34:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:05,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:06,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:06,148 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 16:34:06,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054882941] [2024-11-13 16:34:06,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054882941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:06,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:06,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:34:06,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14729370] [2024-11-13 16:34:06,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:06,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:34:06,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:06,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:34:06,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:34:06,153 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:06,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:06,382 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-11-13 16:34:06,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:34:06,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-13 16:34:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:06,385 INFO L225 Difference]: With dead ends: 71 [2024-11-13 16:34:06,387 INFO L226 Difference]: Without dead ends: 71 [2024-11-13 16:34:06,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:34:06,389 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 22 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:06,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 226 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:06,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-13 16:34:06,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-11-13 16:34:06,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:34:06,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2024-11-13 16:34:06,402 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 12 [2024-11-13 16:34:06,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:06,403 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2024-11-13 16:34:06,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:06,403 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2024-11-13 16:34:06,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 16:34:06,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:06,404 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:06,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:34:06,406 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:06,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:06,407 INFO L85 PathProgramCache]: Analyzing trace with hash -103031450, now seen corresponding path program 1 times [2024-11-13 16:34:06,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:06,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641133283] [2024-11-13 16:34:06,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:06,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:06,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:06,949 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 16:34:06,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:06,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641133283] [2024-11-13 16:34:06,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641133283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:06,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:06,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:34:06,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271762203] [2024-11-13 16:34:06,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:06,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:34:06,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:06,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:34:06,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:34:06,951 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:07,138 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2024-11-13 16:34:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:34:07,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-13 16:34:07,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:07,139 INFO L225 Difference]: With dead ends: 70 [2024-11-13 16:34:07,140 INFO L226 Difference]: Without dead ends: 70 [2024-11-13 16:34:07,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:34:07,141 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 5 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:07,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 236 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:07,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-13 16:34:07,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2024-11-13 16:34:07,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 61 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:34:07,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2024-11-13 16:34:07,146 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 12 [2024-11-13 16:34:07,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:07,146 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2024-11-13 16:34:07,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2024-11-13 16:34:07,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 16:34:07,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:07,147 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:07,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:34:07,148 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:07,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:07,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2045697995, now seen corresponding path program 1 times [2024-11-13 16:34:07,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:07,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426116492] [2024-11-13 16:34:07,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:07,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:07,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:07,301 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 16:34:07,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:07,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426116492] [2024-11-13 16:34:07,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426116492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:07,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:07,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:34:07,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585711770] [2024-11-13 16:34:07,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:07,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:34:07,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:07,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:34:07,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:34:07,302 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:07,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:07,525 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2024-11-13 16:34:07,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:34:07,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-13 16:34:07,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:07,526 INFO L225 Difference]: With dead ends: 86 [2024-11-13 16:34:07,526 INFO L226 Difference]: Without dead ends: 86 [2024-11-13 16:34:07,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:34:07,527 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 26 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:07,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 219 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:07,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-13 16:34:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2024-11-13 16:34:07,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 75 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2024-11-13 16:34:07,536 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 18 [2024-11-13 16:34:07,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:07,537 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2024-11-13 16:34:07,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2024-11-13 16:34:07,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 16:34:07,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:07,537 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:07,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 16:34:07,538 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:07,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2045697996, now seen corresponding path program 1 times [2024-11-13 16:34:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:07,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74586680] [2024-11-13 16:34:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:07,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:07,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:07,941 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 16:34:07,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:07,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74586680] [2024-11-13 16:34:07,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74586680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:07,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:07,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:34:07,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687955431] [2024-11-13 16:34:07,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:07,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:34:07,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:07,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:34:07,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:34:07,944 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:08,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:08,238 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2024-11-13 16:34:08,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:34:08,239 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-13 16:34:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:08,240 INFO L225 Difference]: With dead ends: 89 [2024-11-13 16:34:08,240 INFO L226 Difference]: Without dead ends: 89 [2024-11-13 16:34:08,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:34:08,242 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 26 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:08,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 371 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:34:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-13 16:34:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2024-11-13 16:34:08,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 75 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2024-11-13 16:34:08,249 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 18 [2024-11-13 16:34:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:08,249 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2024-11-13 16:34:08,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2024-11-13 16:34:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 16:34:08,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:08,250 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:08,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 16:34:08,251 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:08,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1179294085, now seen corresponding path program 1 times [2024-11-13 16:34:08,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:08,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232373538] [2024-11-13 16:34:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:08,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:08,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:08,484 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 16:34:08,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:08,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232373538] [2024-11-13 16:34:08,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232373538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:08,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:08,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:34:08,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663828628] [2024-11-13 16:34:08,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:08,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:34:08,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:08,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:34:08,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:34:08,490 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:08,669 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2024-11-13 16:34:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:34:08,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-13 16:34:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:08,671 INFO L225 Difference]: With dead ends: 85 [2024-11-13 16:34:08,671 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 16:34:08,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:34:08,672 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 18 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:08,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 405 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:08,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 16:34:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-13 16:34:08,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.543859649122807) internal successors, (88), 76 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2024-11-13 16:34:08,685 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 20 [2024-11-13 16:34:08,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:08,686 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2024-11-13 16:34:08,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:08,689 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2024-11-13 16:34:08,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 16:34:08,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:08,690 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:08,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 16:34:08,690 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:08,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:08,690 INFO L85 PathProgramCache]: Analyzing trace with hash -804729291, now seen corresponding path program 1 times [2024-11-13 16:34:08,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:08,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421126172] [2024-11-13 16:34:08,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:08,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:08,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:08,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:34:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:08,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:08,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421126172] [2024-11-13 16:34:08,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421126172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:08,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:08,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:34:08,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956476733] [2024-11-13 16:34:08,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:08,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:34:08,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:08,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:34:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:34:08,955 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:34:09,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:09,162 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2024-11-13 16:34:09,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:34:09,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-13 16:34:09,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:09,164 INFO L225 Difference]: With dead ends: 83 [2024-11-13 16:34:09,164 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 16:34:09,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:34:09,165 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 9 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:09,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 186 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:09,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 16:34:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2024-11-13 16:34:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 76 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2024-11-13 16:34:09,171 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 21 [2024-11-13 16:34:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:09,171 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2024-11-13 16:34:09,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:34:09,172 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2024-11-13 16:34:09,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 16:34:09,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:09,172 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:09,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 16:34:09,173 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:09,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:09,173 INFO L85 PathProgramCache]: Analyzing trace with hash -804729290, now seen corresponding path program 1 times [2024-11-13 16:34:09,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:09,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428488693] [2024-11-13 16:34:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:09,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:09,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:09,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:34:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:09,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:09,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428488693] [2024-11-13 16:34:09,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428488693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:09,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130369609] [2024-11-13 16:34:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:09,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:09,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:09,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:09,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:34:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:10,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 16:34:10,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:10,106 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 6 treesize of output 5 [2024-11-13 16:34:10,120 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 16:34:10,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:10,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 16:34:10,333 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:34:10,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-13 16:34:10,498 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-13 16:34:10,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:10,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 16:34:10,597 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:34:10,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-13 16:34:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-13 16:34:10,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:34:10,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130369609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:10,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:34:10,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-11-13 16:34:10,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493314596] [2024-11-13 16:34:10,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:34:10,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 16:34:10,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:10,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 16:34:10,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=321, Unknown=1, NotChecked=36, Total=420 [2024-11-13 16:34:10,828 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:34:11,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:11,291 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2024-11-13 16:34:11,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:34:11,292 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 21 [2024-11-13 16:34:11,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:11,293 INFO L225 Difference]: With dead ends: 85 [2024-11-13 16:34:11,293 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 16:34:11,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=391, Unknown=1, NotChecked=40, Total=506 [2024-11-13 16:34:11,294 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 38 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:11,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 370 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 296 Invalid, 0 Unknown, 79 Unchecked, 0.3s Time] [2024-11-13 16:34:11,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 16:34:11,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-13 16:34:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 76 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2024-11-13 16:34:11,300 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 21 [2024-11-13 16:34:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:11,300 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2024-11-13 16:34:11,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:34:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2024-11-13 16:34:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 16:34:11,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:11,301 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:11,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:34:11,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 16:34:11,502 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:11,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:11,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2098035957, now seen corresponding path program 1 times [2024-11-13 16:34:11,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:11,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530979926] [2024-11-13 16:34:11,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:11,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:11,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:11,981 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 16:34:11,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:11,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530979926] [2024-11-13 16:34:11,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530979926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:11,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:11,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 16:34:11,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194028615] [2024-11-13 16:34:11,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:11,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:34:11,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:11,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:34:11,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:34:11,983 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:12,231 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2024-11-13 16:34:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:34:12,231 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-13 16:34:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:12,232 INFO L225 Difference]: With dead ends: 88 [2024-11-13 16:34:12,233 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 16:34:12,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:34:12,233 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 5 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:12,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 292 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 16:34:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-13 16:34:12,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.421875) internal successors, (91), 83 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2024-11-13 16:34:12,241 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 21 [2024-11-13 16:34:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:12,241 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2024-11-13 16:34:12,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2024-11-13 16:34:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 16:34:12,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:12,244 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:12,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 16:34:12,244 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:12,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:12,245 INFO L85 PathProgramCache]: Analyzing trace with hash 817139119, now seen corresponding path program 1 times [2024-11-13 16:34:12,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:12,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654255484] [2024-11-13 16:34:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:12,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:12,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:12,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:34:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:34:12,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:12,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654255484] [2024-11-13 16:34:12,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654255484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:12,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:12,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:34:12,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578922720] [2024-11-13 16:34:12,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:12,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:34:12,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:12,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:34:12,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:34:12,441 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:34:12,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:12,625 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2024-11-13 16:34:12,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:34:12,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-13 16:34:12,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:12,626 INFO L225 Difference]: With dead ends: 87 [2024-11-13 16:34:12,626 INFO L226 Difference]: Without dead ends: 87 [2024-11-13 16:34:12,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:34:12,627 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 4 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:12,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 267 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-13 16:34:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-13 16:34:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.390625) internal successors, (89), 82 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2024-11-13 16:34:12,631 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 24 [2024-11-13 16:34:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:12,631 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2024-11-13 16:34:12,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:34:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2024-11-13 16:34:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 16:34:12,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:12,632 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:12,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 16:34:12,633 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:12,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:12,636 INFO L85 PathProgramCache]: Analyzing trace with hash 817139120, now seen corresponding path program 1 times [2024-11-13 16:34:12,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:12,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654743936] [2024-11-13 16:34:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:12,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:12,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:12,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:34:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:12,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:12,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654743936] [2024-11-13 16:34:12,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654743936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:12,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:12,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:34:12,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527663018] [2024-11-13 16:34:12,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:12,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:34:12,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:12,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:34:12,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:34:12,968 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:34:13,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:13,143 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2024-11-13 16:34:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:34:13,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-13 16:34:13,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:13,144 INFO L225 Difference]: With dead ends: 86 [2024-11-13 16:34:13,144 INFO L226 Difference]: Without dead ends: 86 [2024-11-13 16:34:13,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:34:13,145 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 3 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:13,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 290 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:34:13,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-13 16:34:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-13 16:34:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.359375) internal successors, (87), 81 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2024-11-13 16:34:13,149 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 24 [2024-11-13 16:34:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:13,149 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2024-11-13 16:34:13,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:34:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2024-11-13 16:34:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 16:34:13,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:13,149 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:13,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 16:34:13,150 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:13,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:13,150 INFO L85 PathProgramCache]: Analyzing trace with hash -2069858063, now seen corresponding path program 1 times [2024-11-13 16:34:13,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:13,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106362364] [2024-11-13 16:34:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:13,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:13,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:13,888 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 16:34:13,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:13,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106362364] [2024-11-13 16:34:13,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106362364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:13,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542824019] [2024-11-13 16:34:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:13,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:13,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:13,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:13,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:34:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:14,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 16:34:14,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:14,025 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 6 treesize of output 5 [2024-11-13 16:34:14,054 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 16:34:14,063 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 16:34:14,215 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:34:14,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-13 16:34:14,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 16:34:14,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 16:34:14,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:14,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 16:34:14,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:14,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 16:34:14,656 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 16:34:14,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:34:18,257 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8))) (and (forall ((v_ArrVal_497 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~data~0#1.base| v_ArrVal_497))) (store .cse0 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |c_ULTIMATE.start_create_~data~0#1.base|))) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 0)) (forall ((|ULTIMATE.start_create_~data~0#1.offset| Int) (v_ArrVal_498 (Array Int Int))) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~data~0#1.base| v_ArrVal_498))) (store .cse2 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |ULTIMATE.start_create_~data~0#1.offset|))) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 0)))) is different from false [2024-11-13 16:34:18,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:34:18,667 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-13 16:34:18,673 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 36 treesize of output 24 [2024-11-13 16:34:18,686 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-13 16:34:18,686 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 16:34:18,730 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 16:34:18,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542824019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:34:18,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:34:18,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 13] total 31 [2024-11-13 16:34:18,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768222106] [2024-11-13 16:34:18,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:34:18,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 16:34:18,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:18,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 16:34:18,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=782, Unknown=4, NotChecked=56, Total=930 [2024-11-13 16:34:18,732 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 27 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 16:34:22,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:34:27,007 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 16:34:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:27,670 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2024-11-13 16:34:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:34:27,671 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 27 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-11-13 16:34:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:27,672 INFO L225 Difference]: With dead ends: 88 [2024-11-13 16:34:27,672 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 16:34:27,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=122, Invalid=1068, Unknown=4, NotChecked=66, Total=1260 [2024-11-13 16:34:27,673 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 12 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:27,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 832 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 506 Invalid, 2 Unknown, 39 Unchecked, 8.6s Time] [2024-11-13 16:34:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 16:34:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-13 16:34:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 83 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2024-11-13 16:34:27,681 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 24 [2024-11-13 16:34:27,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:27,682 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2024-11-13 16:34:27,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 27 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 16:34:27,683 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2024-11-13 16:34:27,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 16:34:27,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:27,684 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:27,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 16:34:27,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:27,890 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:27,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash -563786207, now seen corresponding path program 1 times [2024-11-13 16:34:27,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:27,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879327664] [2024-11-13 16:34:27,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:27,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:28,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:28,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:28,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879327664] [2024-11-13 16:34:28,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879327664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:28,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:28,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:34:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291234505] [2024-11-13 16:34:28,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:28,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:34:28,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:28,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:34:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:34:28,023 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:28,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:28,255 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2024-11-13 16:34:28,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:34:28,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-13 16:34:28,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:28,257 INFO L225 Difference]: With dead ends: 102 [2024-11-13 16:34:28,257 INFO L226 Difference]: Without dead ends: 102 [2024-11-13 16:34:28,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:34:28,257 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 33 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:28,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 206 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:28,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-13 16:34:28,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2024-11-13 16:34:28,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 93 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:28,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2024-11-13 16:34:28,266 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 26 [2024-11-13 16:34:28,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:28,267 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2024-11-13 16:34:28,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:28,267 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2024-11-13 16:34:28,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 16:34:28,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:28,268 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:28,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 16:34:28,269 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:28,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash -563786206, now seen corresponding path program 1 times [2024-11-13 16:34:28,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:28,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805832157] [2024-11-13 16:34:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:28,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:28,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:28,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:34:28,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:28,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805832157] [2024-11-13 16:34:28,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805832157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:28,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841947573] [2024-11-13 16:34:28,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:28,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:28,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:28,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:28,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:34:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:28,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 16:34:28,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:34:28,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:34:29,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:34:29,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 19 [2024-11-13 16:34:29,177 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 16:34:29,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841947573] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:29,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:34:29,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 20 [2024-11-13 16:34:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585919770] [2024-11-13 16:34:29,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:29,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:34:29,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:34:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:34:29,179 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:29,451 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2024-11-13 16:34:29,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:34:29,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-13 16:34:29,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:29,452 INFO L225 Difference]: With dead ends: 106 [2024-11-13 16:34:29,453 INFO L226 Difference]: Without dead ends: 106 [2024-11-13 16:34:29,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:34:29,454 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 35 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:29,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 195 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-13 16:34:29,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2024-11-13 16:34:29,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 93 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:29,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2024-11-13 16:34:29,461 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 26 [2024-11-13 16:34:29,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:29,461 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2024-11-13 16:34:29,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2024-11-13 16:34:29,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 16:34:29,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:29,465 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:29,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:34:29,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 16:34:29,666 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:29,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:29,668 INFO L85 PathProgramCache]: Analyzing trace with hash -297492040, now seen corresponding path program 1 times [2024-11-13 16:34:29,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:29,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133834473] [2024-11-13 16:34:29,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:29,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:29,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:29,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:29,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133834473] [2024-11-13 16:34:29,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133834473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:29,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:29,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 16:34:29,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143223539] [2024-11-13 16:34:29,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:29,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:34:29,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:29,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:34:29,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:34:29,846 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:30,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:30,025 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2024-11-13 16:34:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:34:30,026 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-13 16:34:30,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:30,026 INFO L225 Difference]: With dead ends: 103 [2024-11-13 16:34:30,027 INFO L226 Difference]: Without dead ends: 103 [2024-11-13 16:34:30,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:34:30,027 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 29 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:30,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 350 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-13 16:34:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2024-11-13 16:34:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 92 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2024-11-13 16:34:30,031 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 27 [2024-11-13 16:34:30,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:30,032 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2024-11-13 16:34:30,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:30,032 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2024-11-13 16:34:30,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 16:34:30,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:30,033 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:30,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 16:34:30,033 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:30,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:30,034 INFO L85 PathProgramCache]: Analyzing trace with hash -297503187, now seen corresponding path program 1 times [2024-11-13 16:34:30,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:30,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464724875] [2024-11-13 16:34:30,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:30,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:30,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:30,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:30,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464724875] [2024-11-13 16:34:30,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464724875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:30,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:30,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:34:30,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521659545] [2024-11-13 16:34:30,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:30,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:34:30,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:30,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:34:30,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:34:30,245 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:30,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:30,487 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2024-11-13 16:34:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:34:30,488 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-13 16:34:30,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:30,489 INFO L225 Difference]: With dead ends: 109 [2024-11-13 16:34:30,489 INFO L226 Difference]: Without dead ends: 109 [2024-11-13 16:34:30,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:34:30,490 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:30,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 296 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-13 16:34:30,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2024-11-13 16:34:30,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 80 states have (on average 1.3125) internal successors, (105), 96 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:30,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2024-11-13 16:34:30,496 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 27 [2024-11-13 16:34:30,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:30,496 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2024-11-13 16:34:30,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:30,497 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2024-11-13 16:34:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 16:34:30,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:30,497 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:30,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 16:34:30,498 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:30,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:30,498 INFO L85 PathProgramCache]: Analyzing trace with hash -632664095, now seen corresponding path program 1 times [2024-11-13 16:34:30,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:30,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168946865] [2024-11-13 16:34:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:30,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:30,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:30,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:30,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:30,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168946865] [2024-11-13 16:34:30,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168946865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:30,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:30,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:34:30,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041912388] [2024-11-13 16:34:30,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:30,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:34:30,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:30,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:34:30,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:34:30,761 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:31,054 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2024-11-13 16:34:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:34:31,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-13 16:34:31,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:31,055 INFO L225 Difference]: With dead ends: 108 [2024-11-13 16:34:31,055 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 16:34:31,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:34:31,056 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 19 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:31,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 250 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:34:31,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 16:34:31,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2024-11-13 16:34:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.308641975308642) internal successors, (106), 97 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:31,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2024-11-13 16:34:31,061 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 28 [2024-11-13 16:34:31,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:31,062 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2024-11-13 16:34:31,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:31,062 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2024-11-13 16:34:31,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 16:34:31,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:31,063 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:31,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 16:34:31,064 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:31,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:31,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1862249647, now seen corresponding path program 1 times [2024-11-13 16:34:31,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:31,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263096309] [2024-11-13 16:34:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:31,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:31,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:31,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:31,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263096309] [2024-11-13 16:34:31,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263096309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:31,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:31,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:34:31,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085869519] [2024-11-13 16:34:31,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:31,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:34:31,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:31,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:34:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:34:31,322 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:31,578 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2024-11-13 16:34:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:34:31,579 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-13 16:34:31,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:31,580 INFO L225 Difference]: With dead ends: 103 [2024-11-13 16:34:31,580 INFO L226 Difference]: Without dead ends: 103 [2024-11-13 16:34:31,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:34:31,581 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 13 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:31,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 310 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-13 16:34:31,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-13 16:34:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 98 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2024-11-13 16:34:31,585 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 29 [2024-11-13 16:34:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:31,585 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2024-11-13 16:34:31,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:31,585 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2024-11-13 16:34:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 16:34:31,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:31,586 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:31,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 16:34:31,586 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:31,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:31,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1379447758, now seen corresponding path program 1 times [2024-11-13 16:34:31,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:31,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741691636] [2024-11-13 16:34:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:31,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:31,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:31,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:31,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741691636] [2024-11-13 16:34:31,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741691636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:31,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:31,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-13 16:34:31,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498097083] [2024-11-13 16:34:31,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:31,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 16:34:31,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:31,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 16:34:31,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-13 16:34:31,980 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:32,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:32,442 INFO L93 Difference]: Finished difference Result 107 states and 119 transitions. [2024-11-13 16:34:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:34:32,442 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-11-13 16:34:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:32,443 INFO L225 Difference]: With dead ends: 107 [2024-11-13 16:34:32,443 INFO L226 Difference]: Without dead ends: 107 [2024-11-13 16:34:32,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-13 16:34:32,445 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 29 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:32,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 266 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:34:32,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-13 16:34:32,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2024-11-13 16:34:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 100 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2024-11-13 16:34:32,451 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 31 [2024-11-13 16:34:32,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:32,452 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2024-11-13 16:34:32,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2024-11-13 16:34:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 16:34:32,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:32,453 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:32,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 16:34:32,453 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:32,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:32,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1379447757, now seen corresponding path program 1 times [2024-11-13 16:34:32,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:32,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133080970] [2024-11-13 16:34:32,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:32,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:32,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:32,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:34:32,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:32,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133080970] [2024-11-13 16:34:32,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133080970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:32,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879002021] [2024-11-13 16:34:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:32,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:32,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:32,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:32,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:34:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:32,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 16:34:32,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:34:33,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:34:33,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:34:33,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 19 [2024-11-13 16:34:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:34:33,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879002021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:34:33,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:34:33,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 18 [2024-11-13 16:34:33,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087941159] [2024-11-13 16:34:33,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:34:33,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 16:34:33,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:33,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 16:34:33,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:34:33,297 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 19 states, 18 states have (on average 4.0) internal successors, (72), 17 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:34:33,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:33,641 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2024-11-13 16:34:33,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:34:33,642 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.0) internal successors, (72), 17 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-11-13 16:34:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:33,643 INFO L225 Difference]: With dead ends: 117 [2024-11-13 16:34:33,643 INFO L226 Difference]: Without dead ends: 117 [2024-11-13 16:34:33,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:34:33,644 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 28 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:33,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 515 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:34:33,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-13 16:34:33,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2024-11-13 16:34:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 102 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2024-11-13 16:34:33,650 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 31 [2024-11-13 16:34:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:33,650 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2024-11-13 16:34:33,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.0) internal successors, (72), 17 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:34:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2024-11-13 16:34:33,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 16:34:33,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:33,651 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:33,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:34:33,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:33,853 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:33,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:33,854 INFO L85 PathProgramCache]: Analyzing trace with hash -881004848, now seen corresponding path program 1 times [2024-11-13 16:34:33,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:33,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915238540] [2024-11-13 16:34:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:33,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:34,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:34,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:34,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915238540] [2024-11-13 16:34:34,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915238540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:34,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:34,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:34:34,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893981447] [2024-11-13 16:34:34,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:34,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:34:34,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:34,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:34:34,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:34:34,088 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:34,283 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2024-11-13 16:34:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:34:34,283 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-13 16:34:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:34,284 INFO L225 Difference]: With dead ends: 108 [2024-11-13 16:34:34,284 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 16:34:34,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:34:34,285 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 19 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:34,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 322 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:34:34,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 16:34:34,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-13 16:34:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 88 states have (on average 1.2840909090909092) internal successors, (113), 103 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2024-11-13 16:34:34,293 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 34 [2024-11-13 16:34:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:34,293 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2024-11-13 16:34:34,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:34:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2024-11-13 16:34:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:34:34,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:34,297 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:34,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 16:34:34,297 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:34,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:34,298 INFO L85 PathProgramCache]: Analyzing trace with hash 29731422, now seen corresponding path program 1 times [2024-11-13 16:34:34,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:34,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852359657] [2024-11-13 16:34:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:34,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:34,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:34,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:34:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:34,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 16:34:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:34:34,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:34,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852359657] [2024-11-13 16:34:34,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852359657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:34,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369079350] [2024-11-13 16:34:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:34,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:34,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:34,853 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:34,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:34:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:35,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 16:34:35,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:35,067 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:34:35,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-13 16:34:35,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:34:35,160 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:34:35,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 16:34:35,178 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 31 treesize of output 13 [2024-11-13 16:34:35,198 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base 1))) is different from true [2024-11-13 16:34:35,226 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-13 16:34:35,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-13 16:34:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2024-11-13 16:34:35,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:34:35,404 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-13 16:34:35,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21 treesize of output 20 [2024-11-13 16:34:35,410 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_948 (Array Int Int))) (= |c_ULTIMATE.start_create_#t~mem9#1.base| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_948) |c_ULTIMATE.start_create_~now~0#1.base|) (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|)))) is different from false [2024-11-13 16:34:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:34:35,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369079350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:34:35,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:34:35,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 23 [2024-11-13 16:34:35,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946059224] [2024-11-13 16:34:35,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:34:35,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 16:34:35,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:35,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 16:34:35,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=402, Unknown=2, NotChecked=82, Total=552 [2024-11-13 16:34:35,593 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 19 states have internal predecessors, (53), 3 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 16:34:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:36,112 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2024-11-13 16:34:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:34:36,113 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 19 states have internal predecessors, (53), 3 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 36 [2024-11-13 16:34:36,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:36,114 INFO L225 Difference]: With dead ends: 107 [2024-11-13 16:34:36,114 INFO L226 Difference]: Without dead ends: 107 [2024-11-13 16:34:36,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=604, Unknown=2, NotChecked=102, Total=812 [2024-11-13 16:34:36,115 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 15 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:36,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 600 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 373 Invalid, 0 Unknown, 85 Unchecked, 0.4s Time] [2024-11-13 16:34:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-13 16:34:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-13 16:34:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 102 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2024-11-13 16:34:36,123 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 36 [2024-11-13 16:34:36,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:36,123 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2024-11-13 16:34:36,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 19 states have internal predecessors, (53), 3 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 16:34:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2024-11-13 16:34:36,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:34:36,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:36,124 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:36,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 16:34:36,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 16:34:36,325 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:36,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:36,325 INFO L85 PathProgramCache]: Analyzing trace with hash 29731423, now seen corresponding path program 1 times [2024-11-13 16:34:36,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:36,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053024667] [2024-11-13 16:34:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:36,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:36,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:36,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:34:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:37,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 16:34:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:34:37,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:37,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053024667] [2024-11-13 16:34:37,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053024667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:37,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839915125] [2024-11-13 16:34:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:37,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:37,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:37,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:37,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:34:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:37,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 16:34:37,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:37,386 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 16:34:37,494 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:34:37,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-13 16:34:37,540 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 16:34:37,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:34:37,664 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:34:37,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-13 16:34:37,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:34:37,705 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 42 treesize of output 18 [2024-11-13 16:34:37,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:34:37,782 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-13 16:34:37,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:37,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 16:34:37,823 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:34:37,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-13 16:34:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-13 16:34:37,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:34:38,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839915125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:38,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:34:38,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 23 [2024-11-13 16:34:38,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754286537] [2024-11-13 16:34:38,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:34:38,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 16:34:38,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:38,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 16:34:38,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=534, Unknown=1, NotChecked=46, Total=650 [2024-11-13 16:34:38,021 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 18 states have internal predecessors, (45), 3 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 16:34:38,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:38,745 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2024-11-13 16:34:38,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:34:38,745 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 18 states have internal predecessors, (45), 3 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2024-11-13 16:34:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:38,746 INFO L225 Difference]: With dead ends: 104 [2024-11-13 16:34:38,746 INFO L226 Difference]: Without dead ends: 104 [2024-11-13 16:34:38,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=867, Unknown=1, NotChecked=60, Total=1056 [2024-11-13 16:34:38,747 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 13 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:38,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 611 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 422 Invalid, 0 Unknown, 68 Unchecked, 0.4s Time] [2024-11-13 16:34:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-13 16:34:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-13 16:34:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 99 states have internal predecessors, (109), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2024-11-13 16:34:38,752 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 36 [2024-11-13 16:34:38,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:38,752 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2024-11-13 16:34:38,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 18 states have internal predecessors, (45), 3 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 16:34:38,752 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2024-11-13 16:34:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:34:38,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:38,753 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:38,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 16:34:38,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:38,954 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:38,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:38,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1362470626, now seen corresponding path program 1 times [2024-11-13 16:34:38,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:38,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138925244] [2024-11-13 16:34:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:38,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:39,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:39,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:34:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:39,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:39,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138925244] [2024-11-13 16:34:39,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138925244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:39,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822594008] [2024-11-13 16:34:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:39,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:39,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:39,235 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:39,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:34:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:39,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 16:34:39,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:34:39,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:34:39,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:34:39,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 19 [2024-11-13 16:34:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:34:39,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822594008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:34:39,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:34:39,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 20 [2024-11-13 16:34:39,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488415944] [2024-11-13 16:34:39,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:34:39,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 16:34:39,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:39,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 16:34:39,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:34:39,943 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 21 states, 20 states have (on average 3.85) internal successors, (77), 19 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 16:34:40,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:40,221 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2024-11-13 16:34:40,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:34:40,222 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.85) internal successors, (77), 19 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2024-11-13 16:34:40,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:40,222 INFO L225 Difference]: With dead ends: 108 [2024-11-13 16:34:40,223 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 16:34:40,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:34:40,223 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 3 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:40,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 552 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:34:40,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 16:34:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2024-11-13 16:34:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 102 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2024-11-13 16:34:40,231 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 36 [2024-11-13 16:34:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:40,231 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2024-11-13 16:34:40,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.85) internal successors, (77), 19 states have internal predecessors, (77), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 16:34:40,232 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2024-11-13 16:34:40,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 16:34:40,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:40,232 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:40,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:34:40,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 16:34:40,433 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:40,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:40,434 INFO L85 PathProgramCache]: Analyzing trace with hash 529849847, now seen corresponding path program 1 times [2024-11-13 16:34:40,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:40,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758810539] [2024-11-13 16:34:40,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:40,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:40,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:34:41,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:41,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758810539] [2024-11-13 16:34:41,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758810539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:41,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990334956] [2024-11-13 16:34:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:41,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:41,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:41,026 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:41,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:34:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:41,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-13 16:34:41,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:41,206 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 11 treesize of output 7 [2024-11-13 16:34:41,211 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 11 treesize of output 7 [2024-11-13 16:34:41,388 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 16:34:41,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-13 16:34:41,420 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 16:34:41,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-13 16:34:41,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-13 16:34:41,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-13 16:34:41,941 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 10 treesize of output 9 [2024-11-13 16:34:42,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:34:42,050 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 25 treesize of output 23 [2024-11-13 16:34:42,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:42,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:34:42,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 47 [2024-11-13 16:34:42,100 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:34:42,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-13 16:34:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:42,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:34:42,469 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 10 treesize of output 8 [2024-11-13 16:34:42,904 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_~data~0#1.base| Int)) (or (forall ((v_ArrVal_1245 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1245))) (store .cse0 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |ULTIMATE.start_create_~data~0#1.base|))) |c_ULTIMATE.start_create_~sll~0#1.base|) 0) |c_ULTIMATE.start_create_~sll~0#1.base|)) (forall ((v_ArrVal_1244 (Array Int Int)) (|ULTIMATE.start_create_~data~0#1.offset| Int)) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$#0.offset| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1244))) (store .cse1 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |ULTIMATE.start_create_~data~0#1.offset|))) |c_ULTIMATE.start_create_~sll~0#1.base|) 8) 0)))) (forall ((|ULTIMATE.start_create_~data~0#1.base| Int) (v_ArrVal_1245 (Array Int Int))) (let ((.cse2 (select (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1245))) (store .cse3 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |ULTIMATE.start_create_~data~0#1.base|))) |c_ULTIMATE.start_create_~sll~0#1.base|))) (or (= (select .cse2 8) 0) (= (select .cse2 0) |c_ULTIMATE.start_create_~sll~0#1.base|))))) is different from false [2024-11-13 16:34:42,938 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_~data~0#1.base| Int) (v_ArrVal_1245 (Array Int Int))) (let ((.cse0 (store (select (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1245) |c_ULTIMATE.start_create_#t~ret4#1.base|) |c_ULTIMATE.start_create_#t~ret4#1.offset| |ULTIMATE.start_create_~data~0#1.base|))) (or (= (select .cse0 8) 0) (= |c_ULTIMATE.start_create_#t~ret4#1.base| (select .cse0 0))))) (forall ((|ULTIMATE.start_create_~data~0#1.base| Int)) (or (forall ((v_ArrVal_1244 (Array Int Int)) (|ULTIMATE.start_create_~data~0#1.offset| Int)) (= (select (store (select (store |c_#memory_$Pointer$#0.offset| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1244) |c_ULTIMATE.start_create_#t~ret4#1.base|) |c_ULTIMATE.start_create_#t~ret4#1.offset| |ULTIMATE.start_create_~data~0#1.offset|) 8) 0)) (forall ((v_ArrVal_1245 (Array Int Int))) (= |c_ULTIMATE.start_create_#t~ret4#1.base| (select (store (select (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1245) |c_ULTIMATE.start_create_#t~ret4#1.base|) |c_ULTIMATE.start_create_#t~ret4#1.offset| |ULTIMATE.start_create_~data~0#1.base|) 0)))))) is different from false [2024-11-13 16:34:43,013 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_~data~0#1.base| Int)) (or (forall ((v_ArrVal_1245 (Array Int Int))) (= (select (store (select (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1245) |c_alloc_and_zero_#res.base|) |c_alloc_and_zero_#res.offset| |ULTIMATE.start_create_~data~0#1.base|) 0) |c_alloc_and_zero_#res.base|)) (forall ((v_ArrVal_1244 (Array Int Int)) (|ULTIMATE.start_create_~data~0#1.offset| Int)) (= (select (store (select (store |c_#memory_$Pointer$#0.offset| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1244) |c_alloc_and_zero_#res.base|) |c_alloc_and_zero_#res.offset| |ULTIMATE.start_create_~data~0#1.offset|) 8) 0)))) (forall ((|ULTIMATE.start_create_~data~0#1.base| Int) (v_ArrVal_1245 (Array Int Int))) (let ((.cse0 (store (select (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1245) |c_alloc_and_zero_#res.base|) |c_alloc_and_zero_#res.offset| |ULTIMATE.start_create_~data~0#1.base|))) (or (= (select .cse0 8) 0) (= (select .cse0 0) |c_alloc_and_zero_#res.base|))))) is different from false [2024-11-13 16:34:43,071 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_~data~0#1.base| Int)) (or (forall ((v_ArrVal_1245 (Array Int Int))) (= (select (store (select (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1245) c_alloc_and_zero_~pi~0.base) c_alloc_and_zero_~pi~0.offset |ULTIMATE.start_create_~data~0#1.base|) 0) c_alloc_and_zero_~pi~0.base)) (forall ((v_ArrVal_1244 (Array Int Int)) (|ULTIMATE.start_create_~data~0#1.offset| Int)) (= (select (store (select (store |c_#memory_$Pointer$#0.offset| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1244) c_alloc_and_zero_~pi~0.base) c_alloc_and_zero_~pi~0.offset |ULTIMATE.start_create_~data~0#1.offset|) 8) 0)))) (forall ((|ULTIMATE.start_create_~data~0#1.base| Int) (v_ArrVal_1245 (Array Int Int))) (let ((.cse0 (store (select (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1245) c_alloc_and_zero_~pi~0.base) c_alloc_and_zero_~pi~0.offset |ULTIMATE.start_create_~data~0#1.base|))) (or (= (select .cse0 8) 0) (= (select .cse0 0) c_alloc_and_zero_~pi~0.base))))) is different from false [2024-11-13 16:34:43,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:34:43,086 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-13 16:34:43,091 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 38 treesize of output 34 [2024-11-13 16:34:43,104 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 16:34:43,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 29 [2024-11-13 16:34:43,110 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 16:34:43,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:34:43,118 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-13 16:34:43,127 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 38 treesize of output 34 [2024-11-13 16:34:43,133 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:34:43,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:34:43,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2024-11-13 16:34:43,152 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:34:43,155 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 9 treesize of output 7 [2024-11-13 16:34:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:43,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990334956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:34:43,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:34:43,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 39 [2024-11-13 16:34:43,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426943664] [2024-11-13 16:34:43,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:34:43,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 16:34:43,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:43,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 16:34:43,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1104, Unknown=4, NotChecked=276, Total=1482 [2024-11-13 16:34:43,182 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 35 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 16:34:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:44,763 INFO L93 Difference]: Finished difference Result 142 states and 166 transitions. [2024-11-13 16:34:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 16:34:44,763 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 35 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2024-11-13 16:34:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:44,765 INFO L225 Difference]: With dead ends: 142 [2024-11-13 16:34:44,765 INFO L226 Difference]: Without dead ends: 142 [2024-11-13 16:34:44,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=178, Invalid=1996, Unknown=4, NotChecked=372, Total=2550 [2024-11-13 16:34:44,766 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 30 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:44,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 764 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1152 Invalid, 0 Unknown, 301 Unchecked, 0.9s Time] [2024-11-13 16:34:44,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-13 16:34:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 131. [2024-11-13 16:34:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 115 states have (on average 1.2695652173913043) internal successors, (146), 126 states have internal predecessors, (146), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2024-11-13 16:34:44,773 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 37 [2024-11-13 16:34:44,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:44,773 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2024-11-13 16:34:44,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 35 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 16:34:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2024-11-13 16:34:44,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 16:34:44,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:44,774 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:44,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 16:34:44,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 16:34:44,978 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:44,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:44,979 INFO L85 PathProgramCache]: Analyzing trace with hash -754525369, now seen corresponding path program 1 times [2024-11-13 16:34:44,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:44,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289403930] [2024-11-13 16:34:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:44,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:45,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:45,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:45,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289403930] [2024-11-13 16:34:45,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289403930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:45,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271401802] [2024-11-13 16:34:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:45,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:45,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:45,639 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:45,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:34:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:45,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 16:34:45,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:46,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:34:46,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:34:46,466 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 39 treesize of output 31 [2024-11-13 16:34:47,036 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_destroy_~l#1.base_23| Int) (|v_ULTIMATE.start_destroy_#t~mem13#1.base_14| Int)) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_23| 1) |v_ULTIMATE.start_destroy_#t~mem13#1.base_14|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_23|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_#t~mem13#1.base_14| 0) |v_ULTIMATE.start_destroy_~l#1.base_23| 0)))) is different from true [2024-11-13 16:34:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-13 16:34:47,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:34:47,421 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 48 treesize of output 44 [2024-11-13 16:34:48,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271401802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:48,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:34:48,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2024-11-13 16:34:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624636310] [2024-11-13 16:34:48,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:34:48,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 16:34:48,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:48,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 16:34:48,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1310, Unknown=1, NotChecked=72, Total=1482 [2024-11-13 16:34:48,093 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand has 29 states, 28 states have (on average 2.5) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:34:49,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:49,437 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions. [2024-11-13 16:34:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:34:49,438 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.5) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2024-11-13 16:34:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:49,439 INFO L225 Difference]: With dead ends: 138 [2024-11-13 16:34:49,439 INFO L226 Difference]: Without dead ends: 114 [2024-11-13 16:34:49,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=160, Invalid=2005, Unknown=1, NotChecked=90, Total=2256 [2024-11-13 16:34:49,440 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 23 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:49,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 503 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 836 Invalid, 0 Unknown, 84 Unchecked, 0.8s Time] [2024-11-13 16:34:49,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-13 16:34:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-13 16:34:49,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 109 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2024-11-13 16:34:49,445 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 38 [2024-11-13 16:34:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:49,445 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2024-11-13 16:34:49,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.5) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:34:49,445 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2024-11-13 16:34:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:34:49,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:49,446 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:49,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 16:34:49,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 16:34:49,650 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:49,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:49,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1921466328, now seen corresponding path program 1 times [2024-11-13 16:34:49,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:49,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103146603] [2024-11-13 16:34:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:49,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:50,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:50,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:34:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:50,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103146603] [2024-11-13 16:34:50,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103146603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402193000] [2024-11-13 16:34:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:50,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:50,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:50,419 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:50,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:34:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:50,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-13 16:34:50,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:50,736 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 11 treesize of output 7 [2024-11-13 16:34:51,016 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 16:34:51,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-13 16:34:51,024 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 16:34:51,040 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:34:51,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-13 16:34:51,103 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 16:34:51,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:51,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-13 16:34:51,208 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 9 treesize of output 3 [2024-11-13 16:34:51,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:51,320 INFO L349 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2024-11-13 16:34:51,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 36 [2024-11-13 16:34:51,752 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 16:34:51,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 19 [2024-11-13 16:34:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:34:51,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:34:51,993 INFO L349 Elim1Store]: treesize reduction 5, result has 77.3 percent of original size [2024-11-13 16:34:51,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 25 [2024-11-13 16:34:52,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402193000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:52,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:34:52,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 36 [2024-11-13 16:34:52,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435703358] [2024-11-13 16:34:52,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:34:52,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 16:34:52,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:52,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 16:34:52,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1821, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 16:34:52,381 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand has 37 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 31 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:34:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:53,289 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2024-11-13 16:34:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:34:53,289 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 31 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2024-11-13 16:34:53,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:53,290 INFO L225 Difference]: With dead ends: 116 [2024-11-13 16:34:53,290 INFO L226 Difference]: Without dead ends: 116 [2024-11-13 16:34:53,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=264, Invalid=2816, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 16:34:53,292 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:53,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 656 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:34:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-13 16:34:53,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2024-11-13 16:34:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 99 states have (on average 1.3131313131313131) internal successors, (130), 110 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2024-11-13 16:34:53,297 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 39 [2024-11-13 16:34:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:53,297 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2024-11-13 16:34:53,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 31 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:34:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2024-11-13 16:34:53,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:34:53,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:53,298 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:53,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 16:34:53,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:53,500 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:53,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:53,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1921466327, now seen corresponding path program 1 times [2024-11-13 16:34:53,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:53,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638812915] [2024-11-13 16:34:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:53,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:54,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:54,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:34:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:54,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:54,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638812915] [2024-11-13 16:34:54,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638812915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:54,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731353438] [2024-11-13 16:34:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:54,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:54,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:54,832 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:54,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:34:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:55,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-13 16:34:55,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:55,399 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:34:55,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-13 16:34:55,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:34:55,462 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 16:34:55,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:55,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 48 [2024-11-13 16:34:55,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2024-11-13 16:34:55,932 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 31 treesize of output 13 [2024-11-13 16:34:55,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:34:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:34:56,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:34:56,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:34:56,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 61 treesize of output 65 [2024-11-13 16:34:56,727 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 81 treesize of output 75 [2024-11-13 16:34:56,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:56,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:56,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:56,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:57,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731353438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:57,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:34:57,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2024-11-13 16:34:57,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567028336] [2024-11-13 16:34:57,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:34:57,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 16:34:57,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:57,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 16:34:57,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1914, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 16:34:57,019 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 37 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 31 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:34:57,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:57,823 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2024-11-13 16:34:57,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 16:34:57,824 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 31 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2024-11-13 16:34:57,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:57,824 INFO L225 Difference]: With dead ends: 119 [2024-11-13 16:34:57,824 INFO L226 Difference]: Without dead ends: 119 [2024-11-13 16:34:57,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=236, Invalid=2734, Unknown=0, NotChecked=0, Total=2970 [2024-11-13 16:34:57,825 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 25 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:57,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 717 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:34:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-13 16:34:57,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2024-11-13 16:34:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 102 states have (on average 1.2941176470588236) internal successors, (132), 113 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 138 transitions. [2024-11-13 16:34:57,830 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 138 transitions. Word has length 39 [2024-11-13 16:34:57,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:57,830 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 138 transitions. [2024-11-13 16:34:57,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 31 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:34:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 138 transitions. [2024-11-13 16:34:57,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 16:34:57,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:57,831 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:57,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 16:34:58,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:58,033 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:58,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:58,034 INFO L85 PathProgramCache]: Analyzing trace with hash 919326614, now seen corresponding path program 1 times [2024-11-13 16:34:58,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:58,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608410014] [2024-11-13 16:34:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:58,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:58,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:34:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:58,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:34:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:34:58,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:34:58,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608410014] [2024-11-13 16:34:58,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608410014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:58,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898417357] [2024-11-13 16:34:58,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:58,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:58,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:58,682 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:58,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 16:34:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:58,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 16:34:58,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:58,895 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 11 treesize of output 7 [2024-11-13 16:34:58,983 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:34:58,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-13 16:34:59,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:59,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-13 16:34:59,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:34:59,025 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 20 treesize of output 8 [2024-11-13 16:34:59,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 16:34:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:34:59,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:34:59,128 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1637 (Array Int Int))) (= 0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1637) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|))) is different from false [2024-11-13 16:34:59,134 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1637 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.offset| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|)) v_ArrVal_1637) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|) 0)) is different from false [2024-11-13 16:34:59,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898417357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:34:59,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:34:59,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 18 [2024-11-13 16:34:59,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53651820] [2024-11-13 16:34:59,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:34:59,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 16:34:59,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:34:59,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 16:34:59,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=359, Unknown=11, NotChecked=78, Total=506 [2024-11-13 16:34:59,284 INFO L87 Difference]: Start difference. First operand 118 states and 138 transitions. Second operand has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:34:59,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:34:59,744 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2024-11-13 16:34:59,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 16:34:59,745 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-13 16:34:59,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:34:59,746 INFO L225 Difference]: With dead ends: 138 [2024-11-13 16:34:59,746 INFO L226 Difference]: Without dead ends: 138 [2024-11-13 16:34:59,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=549, Unknown=12, NotChecked=98, Total=756 [2024-11-13 16:34:59,747 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 26 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:34:59,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 400 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:34:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-13 16:34:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 120. [2024-11-13 16:34:59,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 115 states have internal predecessors, (134), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:34:59,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2024-11-13 16:34:59,767 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 42 [2024-11-13 16:34:59,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:34:59,767 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2024-11-13 16:34:59,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:34:59,767 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2024-11-13 16:34:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 16:34:59,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:34:59,768 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:59,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 16:34:59,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:59,973 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:34:59,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:59,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1565645928, now seen corresponding path program 1 times [2024-11-13 16:34:59,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:34:59,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791809121] [2024-11-13 16:34:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:59,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:34:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:00,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:35:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:00,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:35:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:35:00,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:35:00,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791809121] [2024-11-13 16:35:00,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791809121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:35:00,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733552680] [2024-11-13 16:35:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:35:00,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:35:00,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:35:00,552 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:35:00,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:35:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:00,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-13 16:35:00,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:35:00,871 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 11 treesize of output 7 [2024-11-13 16:35:00,948 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 9 treesize of output 5 [2024-11-13 16:35:01,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:35:01,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 16:35:01,111 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:35:01,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-13 16:35:01,166 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 16:35:01,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:35:01,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-13 16:35:01,250 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 9 treesize of output 3 [2024-11-13 16:35:01,307 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-11-13 16:35:01,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2024-11-13 16:35:01,827 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 17 treesize of output 9 [2024-11-13 16:35:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:35:01,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:35:02,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733552680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:35:02,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:35:02,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 32 [2024-11-13 16:35:02,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048598095] [2024-11-13 16:35:02,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:35:02,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 16:35:02,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:35:02,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 16:35:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 16:35:02,414 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand has 33 states, 32 states have (on average 2.3125) internal successors, (74), 28 states have internal predecessors, (74), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:35:06,674 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 16:35:07,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:35:07,271 INFO L93 Difference]: Finished difference Result 137 states and 158 transitions. [2024-11-13 16:35:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:35:07,271 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.3125) internal successors, (74), 28 states have internal predecessors, (74), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2024-11-13 16:35:07,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:35:07,272 INFO L225 Difference]: With dead ends: 137 [2024-11-13 16:35:07,272 INFO L226 Difference]: Without dead ends: 137 [2024-11-13 16:35:07,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=258, Invalid=2094, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 16:35:07,273 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:35:07,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 553 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 596 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 16:35:07,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-13 16:35:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 122. [2024-11-13 16:35:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 106 states have (on average 1.2830188679245282) internal successors, (136), 117 states have internal predecessors, (136), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:35:07,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2024-11-13 16:35:07,278 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 43 [2024-11-13 16:35:07,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:35:07,278 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2024-11-13 16:35:07,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.3125) internal successors, (74), 28 states have internal predecessors, (74), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:35:07,279 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2024-11-13 16:35:07,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 16:35:07,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:35:07,279 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:35:07,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 16:35:07,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 16:35:07,480 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:35:07,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:35:07,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1290383400, now seen corresponding path program 1 times [2024-11-13 16:35:07,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:35:07,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256195158] [2024-11-13 16:35:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:35:07,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:08,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:35:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:08,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:35:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:35:08,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:35:08,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256195158] [2024-11-13 16:35:08,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256195158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:35:08,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086758900] [2024-11-13 16:35:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:35:08,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:35:08,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:35:08,215 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:35:08,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 16:35:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:08,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 16:35:08,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:35:08,628 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:35:08,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 16:35:08,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:35:08,812 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:35:08,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2024-11-13 16:35:08,977 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 30 treesize of output 12 [2024-11-13 16:35:09,044 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 16:35:09,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:35:09,384 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:35:09,384 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-13 16:35:09,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:35:09,394 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 39 treesize of output 38 [2024-11-13 16:35:09,400 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 18 [2024-11-13 16:35:09,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086758900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:35:09,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:35:09,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2024-11-13 16:35:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096534915] [2024-11-13 16:35:09,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:35:09,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 16:35:09,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:35:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 16:35:09,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1277, Unknown=22, NotChecked=0, Total=1406 [2024-11-13 16:35:09,626 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand has 30 states, 30 states have (on average 2.5) internal successors, (75), 26 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:35:10,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:35:10,635 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2024-11-13 16:35:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:35:10,635 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.5) internal successors, (75), 26 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2024-11-13 16:35:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:35:10,636 INFO L225 Difference]: With dead ends: 122 [2024-11-13 16:35:10,636 INFO L226 Difference]: Without dead ends: 122 [2024-11-13 16:35:10,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=195, Invalid=2232, Unknown=23, NotChecked=0, Total=2450 [2024-11-13 16:35:10,637 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 24 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:35:10,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 813 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:35:10,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-13 16:35:10,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2024-11-13 16:35:10,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 113 states have internal predecessors, (131), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:35:10,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2024-11-13 16:35:10,642 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 44 [2024-11-13 16:35:10,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:35:10,642 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2024-11-13 16:35:10,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.5) internal successors, (75), 26 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:35:10,642 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2024-11-13 16:35:10,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 16:35:10,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:35:10,643 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:35:10,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 16:35:10,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 16:35:10,848 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:35:10,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:35:10,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1192894578, now seen corresponding path program 2 times [2024-11-13 16:35:10,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:35:10,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380655462] [2024-11-13 16:35:10,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:35:10,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:35:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:12,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:35:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:12,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:35:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:12,294 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:35:12,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:35:12,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380655462] [2024-11-13 16:35:12,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380655462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:35:12,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96415491] [2024-11-13 16:35:12,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:35:12,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:35:12,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:35:12,300 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:35:12,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 16:35:12,534 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:35:12,534 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:35:12,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-13 16:35:12,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:35:12,640 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 11 treesize of output 7 [2024-11-13 16:35:12,648 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 11 treesize of output 7 [2024-11-13 16:35:12,681 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 16:35:12,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-13 16:35:12,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2024-11-13 16:35:12,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-13 16:35:12,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:35:12,900 INFO L349 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2024-11-13 16:35:12,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 60 [2024-11-13 16:35:12,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:35:12,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 29 [2024-11-13 16:35:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:13,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:35:36,245 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse7 (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse4 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse7 |c_ULTIMATE.start_create_#t~ret8#1.offset|))) (.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse7 |c_ULTIMATE.start_create_#t~ret8#1.base|)))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_create_#t~ret8#1.base|)) (.cse1 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8)) (.cse5 (select .cse4 |c_ULTIMATE.start_create_#t~ret8#1.base|))) (and (forall ((|v_ULTIMATE.start_create_#t~mem9#1.offset_38| Int)) (or (< |c_ULTIMATE.start_create_#t~ret8#1.offset| |v_ULTIMATE.start_create_#t~mem9#1.offset_38|) (forall ((v_ArrVal_1961 Int) (|ULTIMATE.start_create_~data~0#1.offset| Int)) (= (select (let ((.cse0 (store .cse2 |c_ULTIMATE.start_create_#t~ret8#1.base| (store .cse3 |v_ULTIMATE.start_create_#t~mem9#1.offset_38| v_ArrVal_1961)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) (+ 8 (select (select (store .cse4 |c_ULTIMATE.start_create_#t~ret8#1.base| (store .cse5 |v_ULTIMATE.start_create_#t~mem9#1.offset_38| |ULTIMATE.start_create_~data~0#1.offset|)) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) 0)))) (forall ((|v_ULTIMATE.start_create_#t~mem9#1.offset_38| Int)) (or (forall ((v_ArrVal_1961 Int) (|ULTIMATE.start_create_~data~0#1.offset| Int)) (= (let ((.cse6 (store .cse4 |c_ULTIMATE.start_create_#t~ret8#1.base| (store .cse5 |v_ULTIMATE.start_create_#t~mem9#1.offset_38| |ULTIMATE.start_create_~data~0#1.offset|)))) (select (select .cse6 (select (select (store .cse2 |c_ULTIMATE.start_create_#t~ret8#1.base| (store .cse3 |v_ULTIMATE.start_create_#t~mem9#1.offset_38| v_ArrVal_1961)) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)) (+ 8 (select (select .cse6 |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))) 0)) (< |c_ULTIMATE.start_create_#t~ret8#1.offset| |v_ULTIMATE.start_create_#t~mem9#1.offset_38|))))))) is different from false [2024-11-13 16:35:37,969 INFO L349 Elim1Store]: treesize reduction 1473, result has 47.5 percent of original size [2024-11-13 16:35:37,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 17 case distinctions, treesize of input 7401 treesize of output 5277 [2024-11-13 16:35:38,999 INFO L349 Elim1Store]: treesize reduction 204, result has 39.5 percent of original size [2024-11-13 16:35:39,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 5701 treesize of output 4831 [2024-11-13 16:35:39,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:35:39,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 3954 treesize of output 4030 [2024-11-13 16:35:43,772 INFO L349 Elim1Store]: treesize reduction 1557, result has 46.0 percent of original size [2024-11-13 16:35:43,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 15 new quantified variables, introduced 68 case distinctions, treesize of input 16218 treesize of output 9595 [2024-11-13 16:35:45,790 INFO L349 Elim1Store]: treesize reduction 388, result has 40.9 percent of original size [2024-11-13 16:35:45,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 5838 treesize of output 5480 [2024-11-13 16:35:46,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:35:46,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 5318 treesize of output 5334 [2024-11-13 16:36:34,861 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 8 treesize of output 4 [2024-11-13 16:36:35,333 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:36:35,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-13 16:37:12,782 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 8 treesize of output 4 [2024-11-13 16:37:13,192 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 8 treesize of output 4 [2024-11-13 16:37:13,499 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 8 treesize of output 4 [2024-11-13 16:37:13,811 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:37:13,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 37 treesize of output 39 [2024-11-13 16:37:14,307 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 8 treesize of output 4 [2024-11-13 16:37:16,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:37:16,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 31 treesize of output 33 [2024-11-13 16:37:17,657 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 10 treesize of output 6 [2024-11-13 16:40:34,736 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-13 16:40:34,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-13 16:40:34,737 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-13 16:40:34,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 16:40:34,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 16:40:34,939 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:360) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:324) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 68 more [2024-11-13 16:40:34,947 INFO L158 Benchmark]: Toolchain (without parser) took 392235.76ms. Allocated memory was 117.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 90.4MB in the beginning and 900.9MB in the end (delta: -810.5MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-13 16:40:34,947 INFO L158 Benchmark]: CDTParser took 1.22ms. Allocated memory is still 83.9MB. Free memory is still 41.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:40:34,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.56ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 71.7MB in the end (delta: 18.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:40:34,948 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.55ms. Allocated memory is still 117.4MB. Free memory was 71.7MB in the beginning and 69.8MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:40:34,948 INFO L158 Benchmark]: Boogie Preprocessor took 62.25ms. Allocated memory is still 117.4MB. Free memory was 69.8MB in the beginning and 67.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:40:34,948 INFO L158 Benchmark]: RCFGBuilder took 561.11ms. Allocated memory is still 117.4MB. Free memory was 67.9MB in the beginning and 50.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 16:40:34,949 INFO L158 Benchmark]: TraceAbstraction took 390920.42ms. Allocated memory was 117.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 49.9MB in the beginning and 900.9MB in the end (delta: -851.0MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-13 16:40:34,950 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22ms. Allocated memory is still 83.9MB. Free memory is still 41.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 633.56ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 71.7MB in the end (delta: 18.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.55ms. Allocated memory is still 117.4MB. Free memory was 71.7MB in the beginning and 69.8MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.25ms. Allocated memory is still 117.4MB. Free memory was 69.8MB in the beginning and 67.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 561.11ms. Allocated memory is still 117.4MB. Free memory was 67.9MB in the beginning and 50.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 390920.42ms. Allocated memory was 117.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 49.9MB in the beginning and 900.9MB in the end (delta: -851.0MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/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_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/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 64bit --witnessprinter.graph.data.programhash 7ac435f9525efba17674735293ae04d2f777a83ec5e1b38ed3aaaf0148b05726 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:40:37,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:40:38,037 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2024-11-13 16:40:38,056 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:40:38,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:40:38,105 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:40:38,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:40:38,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:40:38,109 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:40:38,109 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:40:38,110 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:40:38,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:40:38,110 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:40:38,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:40:38,112 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:40:38,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:40:38,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:40:38,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:40:38,113 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:40:38,113 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:40:38,113 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:40:38,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:40:38,113 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:40:38,113 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 16:40:38,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:40:38,113 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 16:40:38,113 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:40:38,113 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:40:38,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:40:38,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:40:38,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:40:38,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:40:38,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:40:38,115 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:40:38,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:40:38,116 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 16:40:38,116 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 16:40:38,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:40:38,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:40:38,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:40:38,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:40:38,117 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_76c6c930-2973-444f-bd8f-f0d736a656c4/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ac435f9525efba17674735293ae04d2f777a83ec5e1b38ed3aaaf0148b05726 [2024-11-13 16:40:38,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:40:38,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:40:38,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:40:38,512 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:40:38,513 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:40:38,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i Unable to find full path for "g++" [2024-11-13 16:40:40,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:40:41,165 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:40:41,166 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/sv-benchmarks/c/memsafety-broom/sll-lst-shared.i [2024-11-13 16:40:41,192 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/data/652fe53a6/4b2dafd0260a4353abb4ca31664cf42f/FLAG94d570f37 [2024-11-13 16:40:41,210 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/data/652fe53a6/4b2dafd0260a4353abb4ca31664cf42f [2024-11-13 16:40:41,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:40:41,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:40:41,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:40:41,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:40:41,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:40:41,221 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9ac554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41, skipping insertion in model container [2024-11-13 16:40:41,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,265 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:40:41,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:40:41,608 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:40:41,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:40:41,727 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:40:41,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41 WrapperNode [2024-11-13 16:40:41,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:40:41,730 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:40:41,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:40:41,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:40:41,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,782 INFO L138 Inliner]: procedures = 122, calls = 23, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 70 [2024-11-13 16:40:41,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:40:41,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:40:41,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:40:41,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:40:41,794 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,848 INFO L175 MemorySlicer]: Split 11 memory accesses to 1 slices as follows [11]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 5 writes are split as follows [5]. [2024-11-13 16:40:41,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,884 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:40:41,896 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:40:41,896 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:40:41,896 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:40:41,897 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (1/1) ... [2024-11-13 16:40:41,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:40:41,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:41,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:40:41,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:40:41,980 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-13 16:40:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-13 16:40:41,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:40:41,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 16:40:41,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 16:40:41,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:40:41,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 16:40:41,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:40:41,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:40:42,155 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:40:42,158 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:40:42,714 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-11-13 16:40:42,715 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:40:42,729 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:40:42,729 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 16:40:42,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:40:42 BoogieIcfgContainer [2024-11-13 16:40:42,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:40:42,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:40:42,734 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:40:42,740 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:40:42,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:40:41" (1/3) ... [2024-11-13 16:40:42,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648e613e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:40:42, skipping insertion in model container [2024-11-13 16:40:42,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:40:41" (2/3) ... [2024-11-13 16:40:42,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648e613e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:40:42, skipping insertion in model container [2024-11-13 16:40:42,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:40:42" (3/3) ... [2024-11-13 16:40:42,743 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-lst-shared.i [2024-11-13 16:40:42,762 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:40:42,764 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll-lst-shared.i that has 2 procedures, 75 locations, 1 initial locations, 3 loop locations, and 29 error locations. [2024-11-13 16:40:42,814 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:40:42,828 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;@37639cdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:40:42,828 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-13 16:40:42,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 71 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:42,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 16:40:42,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:42,842 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 16:40:42,842 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:40:42,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash 34515278, now seen corresponding path program 1 times [2024-11-13 16:40:42,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:42,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088707677] [2024-11-13 16:40:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:42,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:42,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:42,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:42,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:40:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:43,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:40:43,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:43,117 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 6 treesize of output 7 [2024-11-13 16:40:43,150 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 16:40:43,151 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:43,152 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:43,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088707677] [2024-11-13 16:40:43,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088707677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:43,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:43,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:40:43,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128235381] [2024-11-13 16:40:43,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:43,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:40:43,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:43,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:40:43,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:40:43,198 INFO L87 Difference]: Start difference. First operand has 75 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 71 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:40:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:43,419 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2024-11-13 16:40:43,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:40:43,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-13 16:40:43,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:43,430 INFO L225 Difference]: With dead ends: 74 [2024-11-13 16:40:43,430 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 16:40:43,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 16:40:43,435 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 1 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:43,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 120 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:40:43,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 16:40:43,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-13 16:40:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 68 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-13 16:40:43,481 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 5 [2024-11-13 16:40:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:43,481 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-13 16:40:43,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:40:43,482 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-13 16:40:43,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 16:40:43,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:43,483 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 16:40:43,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 16:40:43,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:43,688 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:40:43,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:43,689 INFO L85 PathProgramCache]: Analyzing trace with hash 34515279, now seen corresponding path program 1 times [2024-11-13 16:40:43,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:43,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389978777] [2024-11-13 16:40:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:43,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:43,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:43,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:43,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:40:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:43,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:40:43,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:43,794 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 6 treesize of output 5 [2024-11-13 16:40:43,813 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 16:40:43,814 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:43,814 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:43,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389978777] [2024-11-13 16:40:43,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389978777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:43,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:43,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:40:43,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405671964] [2024-11-13 16:40:43,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:43,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:40:43,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:40:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:40:43,817 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:40:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:44,090 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2024-11-13 16:40:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:40:44,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-13 16:40:44,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:44,093 INFO L225 Difference]: With dead ends: 71 [2024-11-13 16:40:44,096 INFO L226 Difference]: Without dead ends: 71 [2024-11-13 16:40:44,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 16:40:44,097 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:44,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 124 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:40:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-13 16:40:44,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-13 16:40:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 67 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2024-11-13 16:40:44,108 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 5 [2024-11-13 16:40:44,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:44,109 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2024-11-13 16:40:44,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:40:44,109 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2024-11-13 16:40:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 16:40:44,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:44,110 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:44,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:40:44,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:44,315 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:40:44,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash -44799900, now seen corresponding path program 1 times [2024-11-13 16:40:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:44,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325564555] [2024-11-13 16:40:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:44,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:44,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:44,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:44,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:40:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:44,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:40:44,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:44,425 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 6 treesize of output 7 [2024-11-13 16:40:44,438 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 16:40:44,439 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:44,439 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:44,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325564555] [2024-11-13 16:40:44,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325564555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:44,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:44,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:40:44,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508460105] [2024-11-13 16:40:44,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:44,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:40:44,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:44,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:40:44,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:40:44,445 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:44,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:44,669 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2024-11-13 16:40:44,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:40:44,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-13 16:40:44,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:44,672 INFO L225 Difference]: With dead ends: 75 [2024-11-13 16:40:44,672 INFO L226 Difference]: Without dead ends: 75 [2024-11-13 16:40:44,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 16:40:44,674 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 9 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:44,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 109 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:40:44,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-13 16:40:44,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2024-11-13 16:40:44,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 66 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:44,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2024-11-13 16:40:44,683 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 10 [2024-11-13 16:40:44,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:44,684 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2024-11-13 16:40:44,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:44,684 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2024-11-13 16:40:44,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 16:40:44,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:44,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:44,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:40:44,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:44,889 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:40:44,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:44,890 INFO L85 PathProgramCache]: Analyzing trace with hash -44799899, now seen corresponding path program 1 times [2024-11-13 16:40:44,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:44,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598085036] [2024-11-13 16:40:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:44,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:44,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:44,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:44,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:40:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:45,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:40:45,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:45,041 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 6 treesize of output 5 [2024-11-13 16:40:45,068 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 16:40:45,070 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:45,070 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:45,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598085036] [2024-11-13 16:40:45,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598085036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:45,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:45,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:40:45,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449238610] [2024-11-13 16:40:45,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:45,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:40:45,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:40:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:40:45,073 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:45,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:45,316 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2024-11-13 16:40:45,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:40:45,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-13 16:40:45,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:45,319 INFO L225 Difference]: With dead ends: 74 [2024-11-13 16:40:45,319 INFO L226 Difference]: Without dead ends: 74 [2024-11-13 16:40:45,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 16:40:45,321 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 9 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:45,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 115 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:40:45,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-13 16:40:45,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2024-11-13 16:40:45,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 65 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:45,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-13 16:40:45,332 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 10 [2024-11-13 16:40:45,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:45,333 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-13 16:40:45,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:45,333 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-13 16:40:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 16:40:45,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:45,334 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:45,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:40:45,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:45,534 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:40:45,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:45,535 INFO L85 PathProgramCache]: Analyzing trace with hash -103031451, now seen corresponding path program 1 times [2024-11-13 16:40:45,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:45,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877661637] [2024-11-13 16:40:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:45,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:45,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:45,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:45,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:40:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:45,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:40:45,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:45,775 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 16:40:45,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 16:40:45,812 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 16:40:45,813 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:45,813 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877661637] [2024-11-13 16:40:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877661637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:45,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:45,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:40:45,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055700412] [2024-11-13 16:40:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:45,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:40:45,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:45,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:40:45,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:40:45,815 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:46,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:46,251 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-11-13 16:40:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:40:46,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-13 16:40:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:46,253 INFO L225 Difference]: With dead ends: 71 [2024-11-13 16:40:46,253 INFO L226 Difference]: Without dead ends: 71 [2024-11-13 16:40:46,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:40:46,254 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 11 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:46,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 197 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:40:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-13 16:40:46,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-11-13 16:40:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2024-11-13 16:40:46,261 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 12 [2024-11-13 16:40:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:46,261 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2024-11-13 16:40:46,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2024-11-13 16:40:46,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 16:40:46,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:46,262 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:46,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:40:46,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:46,466 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:40:46,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:46,467 INFO L85 PathProgramCache]: Analyzing trace with hash -103031450, now seen corresponding path program 1 times [2024-11-13 16:40:46,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:46,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689106087] [2024-11-13 16:40:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:46,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:46,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:46,470 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:46,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:40:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:46,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 16:40:46,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:46,583 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 6 treesize of output 5 [2024-11-13 16:40:46,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:40:46,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 16:40:46,820 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:40:46,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:40:46,876 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 16:40:46,876 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:46,876 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:46,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689106087] [2024-11-13 16:40:46,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689106087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:46,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:46,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:40:46,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078082064] [2024-11-13 16:40:46,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:46,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:40:46,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:46,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:40:46,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:40:46,879 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:47,405 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2024-11-13 16:40:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:40:47,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-13 16:40:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:47,407 INFO L225 Difference]: With dead ends: 70 [2024-11-13 16:40:47,407 INFO L226 Difference]: Without dead ends: 70 [2024-11-13 16:40:47,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:40:47,408 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 5 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:47,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 207 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:40:47,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-13 16:40:47,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2024-11-13 16:40:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 61 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:47,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2024-11-13 16:40:47,415 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 12 [2024-11-13 16:40:47,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:47,415 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2024-11-13 16:40:47,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:47,416 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2024-11-13 16:40:47,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 16:40:47,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:47,416 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:47,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 16:40:47,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:47,620 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:40:47,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:47,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2045697995, now seen corresponding path program 1 times [2024-11-13 16:40:47,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:47,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2000223519] [2024-11-13 16:40:47,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:47,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:47,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:47,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:47,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:40:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:47,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 16:40:47,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:47,806 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 16:40:47,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:47,806 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:47,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000223519] [2024-11-13 16:40:47,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000223519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:47,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:47,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:40:47,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555656568] [2024-11-13 16:40:47,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:47,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:40:47,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:47,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:40:47,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:40:47,808 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:48,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:48,239 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2024-11-13 16:40:48,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:40:48,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-13 16:40:48,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:48,241 INFO L225 Difference]: With dead ends: 86 [2024-11-13 16:40:48,241 INFO L226 Difference]: Without dead ends: 86 [2024-11-13 16:40:48,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:40:48,242 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 26 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:48,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 192 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:40:48,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-13 16:40:48,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2024-11-13 16:40:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 75 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:40:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2024-11-13 16:40:48,254 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 18 [2024-11-13 16:40:48,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:48,254 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2024-11-13 16:40:48,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:48,254 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2024-11-13 16:40:48,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 16:40:48,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:48,255 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:48,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:40:48,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:48,459 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:40:48,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:48,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2045697996, now seen corresponding path program 1 times [2024-11-13 16:40:48,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:48,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669901058] [2024-11-13 16:40:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:48,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:48,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:48,464 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:48,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:40:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:48,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:40:48,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:48,879 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 16:40:48,880 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:48,880 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:48,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669901058] [2024-11-13 16:40:48,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669901058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:48,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:48,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:40:48,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291946925] [2024-11-13 16:40:48,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:48,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:40:48,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:48,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:40:48,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:40:48,881 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:49,473 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2024-11-13 16:40:49,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:40:49,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-13 16:40:49,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:49,475 INFO L225 Difference]: With dead ends: 89 [2024-11-13 16:40:49,475 INFO L226 Difference]: Without dead ends: 89 [2024-11-13 16:40:49,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:40:49,476 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 26 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:49,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 347 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:40:49,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-13 16:40:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2024-11-13 16:40:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 75 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:40:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2024-11-13 16:40:49,483 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 18 [2024-11-13 16:40:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:49,483 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2024-11-13 16:40:49,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:49,484 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2024-11-13 16:40:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 16:40:49,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:49,485 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:49,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:40:49,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:49,686 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:40:49,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:49,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1179294085, now seen corresponding path program 1 times [2024-11-13 16:40:49,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:49,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563145107] [2024-11-13 16:40:49,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:49,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:49,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:49,693 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:49,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:40:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:49,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 16:40:49,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:49,991 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 16:40:49,991 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:49,991 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:49,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563145107] [2024-11-13 16:40:49,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563145107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:49,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:49,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:40:49,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44843916] [2024-11-13 16:40:49,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:49,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:40:49,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:49,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:40:49,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:40:49,995 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:50,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:50,208 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2024-11-13 16:40:50,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:40:50,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-13 16:40:50,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:50,210 INFO L225 Difference]: With dead ends: 85 [2024-11-13 16:40:50,211 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 16:40:50,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:40:50,212 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 18 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:50,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 382 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:40:50,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 16:40:50,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-13 16:40:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.543859649122807) internal successors, (88), 76 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:40:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2024-11-13 16:40:50,218 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 20 [2024-11-13 16:40:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:50,218 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2024-11-13 16:40:50,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:40:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2024-11-13 16:40:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 16:40:50,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:50,220 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:50,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 16:40:50,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:50,420 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:40:50,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:50,421 INFO L85 PathProgramCache]: Analyzing trace with hash -804729291, now seen corresponding path program 1 times [2024-11-13 16:40:50,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:50,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706659097] [2024-11-13 16:40:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:50,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:50,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:50,423 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:50,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:40:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:50,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:40:50,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:50,744 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 16:40:50,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 16:40:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:40:50,753 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:40:50,753 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:50,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706659097] [2024-11-13 16:40:50,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706659097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:40:50,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:40:50,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:40:50,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445002295] [2024-11-13 16:40:50,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:40:50,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:40:50,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:40:50,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:40:50,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:40:50,756 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:51,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:40:51,166 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2024-11-13 16:40:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:40:51,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-13 16:40:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:40:51,168 INFO L225 Difference]: With dead ends: 83 [2024-11-13 16:40:51,168 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 16:40:51,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:40:51,169 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 9 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:40:51,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 159 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:40:51,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 16:40:51,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2024-11-13 16:40:51,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 76 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:40:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2024-11-13 16:40:51,175 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 21 [2024-11-13 16:40:51,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:40:51,176 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2024-11-13 16:40:51,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:40:51,176 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2024-11-13 16:40:51,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 16:40:51,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:40:51,177 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:40:51,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 16:40:51,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:51,378 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:40:51,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:40:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash -804729290, now seen corresponding path program 1 times [2024-11-13 16:40:51,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:40:51,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13562055] [2024-11-13 16:40:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:51,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:40:51,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:40:51,381 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:40:51,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:40:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:51,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 16:40:51,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:51,526 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 6 treesize of output 5 [2024-11-13 16:40:51,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:40:51,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 16:40:51,727 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:40:51,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:40:51,925 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_~pi~0.base)))) is different from true [2024-11-13 16:40:52,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:40:52,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 16:40:52,051 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:40:52,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:40:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-13 16:40:52,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:40:56,570 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:40:56,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13562055] [2024-11-13 16:40:56,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13562055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:40:56,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [152611135] [2024-11-13 16:40:56,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:40:56,570 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:40:56,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:40:56,579 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:40:56,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-13 16:40:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:40:56,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 16:40:56,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:40:56,874 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 6 treesize of output 5 [2024-11-13 16:40:56,889 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 6 treesize of output 7 [2024-11-13 16:40:57,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:40:57,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 16:40:57,064 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:40:57,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:40:57,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:40:57,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 16:40:57,329 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:40:57,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:40:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-13 16:40:57,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:41:01,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [152611135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:41:01,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:41:01,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 9 [2024-11-13 16:41:01,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764707972] [2024-11-13 16:41:01,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:41:01,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:41:01,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:01,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:41:01,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=86, Unknown=2, NotChecked=18, Total=132 [2024-11-13 16:41:01,730 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:41:02,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:02,865 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2024-11-13 16:41:02,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:41:02,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-13 16:41:02,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:02,867 INFO L225 Difference]: With dead ends: 85 [2024-11-13 16:41:02,867 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 16:41:02,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=33, Invalid=125, Unknown=2, NotChecked=22, Total=182 [2024-11-13 16:41:02,868 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:02,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 225 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 173 Invalid, 0 Unknown, 79 Unchecked, 0.9s Time] [2024-11-13 16:41:02,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 16:41:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-13 16:41:02,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 76 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:02,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2024-11-13 16:41:02,874 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 21 [2024-11-13 16:41:02,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:02,875 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2024-11-13 16:41:02,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:41:02,875 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2024-11-13 16:41:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 16:41:02,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:02,876 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:02,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 16:41:03,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2024-11-13 16:41:03,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:41:03,281 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:03,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:03,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2098035957, now seen corresponding path program 1 times [2024-11-13 16:41:03,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:03,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589802886] [2024-11-13 16:41:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:03,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:03,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:03,286 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:03,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:41:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:03,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 16:41:03,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:03,426 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 6 treesize of output 5 [2024-11-13 16:41:03,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:41:03,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 16:41:03,748 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:41:03,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:41:04,052 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 16:41:04,052 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:41:04,052 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:04,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589802886] [2024-11-13 16:41:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589802886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:41:04,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:41:04,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:41:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928172797] [2024-11-13 16:41:04,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:41:04,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:41:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:04,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:41:04,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:41:04,055 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:04,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:04,957 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2024-11-13 16:41:04,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:41:04,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-13 16:41:04,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:04,959 INFO L225 Difference]: With dead ends: 88 [2024-11-13 16:41:04,959 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 16:41:04,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:41:04,960 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 1 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:04,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 266 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 16:41:04,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 16:41:04,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-13 16:41:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.421875) internal successors, (91), 83 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2024-11-13 16:41:04,966 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 21 [2024-11-13 16:41:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:04,966 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2024-11-13 16:41:04,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2024-11-13 16:41:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 16:41:04,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:04,967 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:04,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 16:41:05,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:05,168 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:05,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:05,168 INFO L85 PathProgramCache]: Analyzing trace with hash 817139119, now seen corresponding path program 1 times [2024-11-13 16:41:05,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:05,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247153042] [2024-11-13 16:41:05,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:05,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:05,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:05,171 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:05,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 16:41:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:05,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 16:41:05,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:05,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:41:05,441 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 23 treesize of output 11 [2024-11-13 16:41:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:41:05,482 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:41:05,482 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:05,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247153042] [2024-11-13 16:41:05,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247153042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:41:05,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:41:05,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:41:05,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715767262] [2024-11-13 16:41:05,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:41:05,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:41:05,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:05,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:41:05,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:41:05,484 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:41:06,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:06,257 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2024-11-13 16:41:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:41:06,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-13 16:41:06,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:06,259 INFO L225 Difference]: With dead ends: 87 [2024-11-13 16:41:06,259 INFO L226 Difference]: Without dead ends: 87 [2024-11-13 16:41:06,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:41:06,260 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 4 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:06,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 238 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 16:41:06,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-13 16:41:06,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-13 16:41:06,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.390625) internal successors, (89), 82 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2024-11-13 16:41:06,266 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 24 [2024-11-13 16:41:06,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:06,268 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2024-11-13 16:41:06,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:41:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2024-11-13 16:41:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 16:41:06,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:06,270 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:06,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 16:41:06,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:06,470 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:06,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:06,471 INFO L85 PathProgramCache]: Analyzing trace with hash 817139120, now seen corresponding path program 1 times [2024-11-13 16:41:06,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:06,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430305213] [2024-11-13 16:41:06,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:06,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:06,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:06,473 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:06,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 16:41:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:06,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:41:06,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:06,635 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 6 treesize of output 5 [2024-11-13 16:41:06,789 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 16:41:06,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:41:06,907 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 21 treesize of output 9 [2024-11-13 16:41:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:41:06,958 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:41:06,958 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:06,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430305213] [2024-11-13 16:41:06,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430305213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:41:06,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:41:06,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:41:06,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216912275] [2024-11-13 16:41:06,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:41:06,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:41:06,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:41:06,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:41:06,961 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:41:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:07,596 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2024-11-13 16:41:07,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:41:07,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-13 16:41:07,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:07,597 INFO L225 Difference]: With dead ends: 86 [2024-11-13 16:41:07,598 INFO L226 Difference]: Without dead ends: 86 [2024-11-13 16:41:07,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:41:07,598 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 3 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:07,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 261 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:41:07,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-13 16:41:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-13 16:41:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.359375) internal successors, (87), 81 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2024-11-13 16:41:07,602 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 24 [2024-11-13 16:41:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:07,603 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2024-11-13 16:41:07,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:41:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2024-11-13 16:41:07,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 16:41:07,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:07,604 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:07,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 16:41:07,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:07,808 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:07,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:07,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2069858063, now seen corresponding path program 1 times [2024-11-13 16:41:07,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:07,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374449305] [2024-11-13 16:41:07,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:07,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:07,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:07,812 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:07,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 16:41:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:07,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 16:41:07,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:07,969 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 11 treesize of output 7 [2024-11-13 16:41:07,984 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 11 treesize of output 7 [2024-11-13 16:41:08,245 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:41:08,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:41:08,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 16:41:08,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 16:41:08,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 16:41:08,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 16:41:09,122 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 16:41:09,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:41:09,894 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_358 (Array (_ BitVec 64) (_ BitVec 64))) (|ULTIMATE.start_create_~data~0#1.offset| (_ BitVec 64))) (= (_ bv0 64) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~data~0#1.base| v_ArrVal_358))) (store .cse0 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |ULTIMATE.start_create_~data~0#1.offset|))) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) (forall ((v_ArrVal_359 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~data~0#1.base| v_ArrVal_359))) (store .cse2 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |c_ULTIMATE.start_create_~data~0#1.base|))) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) (_ bv0 64))))) is different from false [2024-11-13 16:41:11,117 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-13 16:41:11,118 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 1 [2024-11-13 16:41:11,119 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 16:41:11,119 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:11,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374449305] [2024-11-13 16:41:11,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374449305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:41:11,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:41:11,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2024-11-13 16:41:11,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122255182] [2024-11-13 16:41:11,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:41:11,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 16:41:11,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:11,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 16:41:11,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=294, Unknown=5, NotChecked=34, Total=380 [2024-11-13 16:41:11,121 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:41:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:12,941 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2024-11-13 16:41:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:41:12,942 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-13 16:41:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:12,943 INFO L225 Difference]: With dead ends: 88 [2024-11-13 16:41:12,943 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 16:41:12,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=53, Invalid=326, Unknown=5, NotChecked=36, Total=420 [2024-11-13 16:41:12,944 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 7 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:12,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 581 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 305 Invalid, 0 Unknown, 38 Unchecked, 1.7s Time] [2024-11-13 16:41:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 16:41:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-13 16:41:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 83 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2024-11-13 16:41:12,949 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 24 [2024-11-13 16:41:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:12,950 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2024-11-13 16:41:12,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:41:12,950 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2024-11-13 16:41:12,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 16:41:12,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:12,951 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:12,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 16:41:13,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:13,151 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:13,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:13,152 INFO L85 PathProgramCache]: Analyzing trace with hash -563786207, now seen corresponding path program 1 times [2024-11-13 16:41:13,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:13,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563577098] [2024-11-13 16:41:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:13,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:13,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:13,156 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:13,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 16:41:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:13,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 16:41:13,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:41:13,465 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:41:13,465 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:13,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563577098] [2024-11-13 16:41:13,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563577098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:41:13,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:41:13,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:41:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048572043] [2024-11-13 16:41:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:41:13,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:41:13,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:41:13,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:41:13,467 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:14,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:14,182 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2024-11-13 16:41:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:41:14,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-13 16:41:14,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:14,183 INFO L225 Difference]: With dead ends: 102 [2024-11-13 16:41:14,184 INFO L226 Difference]: Without dead ends: 102 [2024-11-13 16:41:14,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:41:14,184 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 33 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:14,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 184 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 16:41:14,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-13 16:41:14,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2024-11-13 16:41:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 93 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2024-11-13 16:41:14,192 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 26 [2024-11-13 16:41:14,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:14,192 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2024-11-13 16:41:14,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:14,193 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2024-11-13 16:41:14,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 16:41:14,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:14,193 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:14,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 16:41:14,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:14,395 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:14,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:14,395 INFO L85 PathProgramCache]: Analyzing trace with hash -563786206, now seen corresponding path program 1 times [2024-11-13 16:41:14,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:14,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979563461] [2024-11-13 16:41:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:14,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:14,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:14,401 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:14,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 16:41:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:14,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 16:41:14,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:41:14,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:41:15,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:41:15,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 26 [2024-11-13 16:41:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:41:16,763 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979563461] [2024-11-13 16:41:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979563461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:41:16,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:41:16,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-11-13 16:41:16,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748741085] [2024-11-13 16:41:16,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:41:16,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 16:41:16,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:16,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 16:41:16,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:41:16,765 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:41:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:19,834 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2024-11-13 16:41:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:41:19,835 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-13 16:41:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:19,836 INFO L225 Difference]: With dead ends: 111 [2024-11-13 16:41:19,836 INFO L226 Difference]: Without dead ends: 111 [2024-11-13 16:41:19,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:41:19,837 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 57 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:19,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 556 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 16:41:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-13 16:41:19,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2024-11-13 16:41:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 96 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2024-11-13 16:41:19,842 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 26 [2024-11-13 16:41:19,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:19,842 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2024-11-13 16:41:19,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:41:19,842 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2024-11-13 16:41:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 16:41:19,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:19,843 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:19,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 16:41:20,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:20,044 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:20,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:20,044 INFO L85 PathProgramCache]: Analyzing trace with hash -297503187, now seen corresponding path program 1 times [2024-11-13 16:41:20,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:20,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204056533] [2024-11-13 16:41:20,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:20,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:20,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:20,047 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:20,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 16:41:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:20,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 16:41:20,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:20,244 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 11 treesize of output 7 [2024-11-13 16:41:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:41:20,443 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:41:20,443 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:20,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204056533] [2024-11-13 16:41:20,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204056533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:41:20,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:41:20,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:41:20,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633695549] [2024-11-13 16:41:20,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:41:20,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:41:20,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:20,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:41:20,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:41:20,445 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:21,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:21,270 INFO L93 Difference]: Finished difference Result 115 states and 134 transitions. [2024-11-13 16:41:21,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:41:21,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-13 16:41:21,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:21,272 INFO L225 Difference]: With dead ends: 115 [2024-11-13 16:41:21,272 INFO L226 Difference]: Without dead ends: 115 [2024-11-13 16:41:21,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:41:21,273 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 20 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:21,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 279 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 16:41:21,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-13 16:41:21,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2024-11-13 16:41:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.3529411764705883) internal successors, (115), 100 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2024-11-13 16:41:21,283 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 27 [2024-11-13 16:41:21,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:21,284 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2024-11-13 16:41:21,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2024-11-13 16:41:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 16:41:21,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:21,287 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:21,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 16:41:21,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:21,488 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:21,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:21,488 INFO L85 PathProgramCache]: Analyzing trace with hash -632320121, now seen corresponding path program 1 times [2024-11-13 16:41:21,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:21,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162492147] [2024-11-13 16:41:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:21,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:21,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:21,490 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:21,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 16:41:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:21,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 16:41:21,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:41:21,860 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:41:21,860 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:21,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162492147] [2024-11-13 16:41:21,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162492147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:41:21,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:41:21,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:41:21,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418847278] [2024-11-13 16:41:21,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:41:21,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:41:21,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:21,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:41:21,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:41:21,862 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:22,182 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2024-11-13 16:41:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:41:22,183 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-13 16:41:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:22,183 INFO L225 Difference]: With dead ends: 105 [2024-11-13 16:41:22,184 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 16:41:22,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:41:22,184 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 28 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:22,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 340 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:41:22,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 16:41:22,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2024-11-13 16:41:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 83 states have (on average 1.3012048192771084) internal successors, (108), 98 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2024-11-13 16:41:22,190 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 28 [2024-11-13 16:41:22,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:22,190 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2024-11-13 16:41:22,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:22,190 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2024-11-13 16:41:22,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 16:41:22,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:22,191 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:22,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 16:41:22,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:22,395 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:22,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:22,396 INFO L85 PathProgramCache]: Analyzing trace with hash -632664095, now seen corresponding path program 1 times [2024-11-13 16:41:22,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:22,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259106398] [2024-11-13 16:41:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:22,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:22,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:22,398 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:22,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 16:41:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:22,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 16:41:22,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:22,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:41:22,926 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 7 [2024-11-13 16:41:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:41:22,986 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:41:22,986 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:22,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259106398] [2024-11-13 16:41:22,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259106398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:41:22,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:41:22,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:41:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893212601] [2024-11-13 16:41:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:41:22,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:41:22,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:22,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:41:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:41:22,987 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:24,095 INFO L93 Difference]: Finished difference Result 110 states and 122 transitions. [2024-11-13 16:41:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:41:24,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-13 16:41:24,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:24,097 INFO L225 Difference]: With dead ends: 110 [2024-11-13 16:41:24,097 INFO L226 Difference]: Without dead ends: 110 [2024-11-13 16:41:24,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:41:24,098 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:24,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 233 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 16:41:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-13 16:41:24,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2024-11-13 16:41:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 84 states have (on average 1.2976190476190477) internal successors, (109), 99 states have internal predecessors, (109), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2024-11-13 16:41:24,103 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 28 [2024-11-13 16:41:24,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:24,103 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2024-11-13 16:41:24,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2024-11-13 16:41:24,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 16:41:24,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:24,104 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:24,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-13 16:41:24,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:24,305 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:24,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:24,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1862249647, now seen corresponding path program 1 times [2024-11-13 16:41:24,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:24,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949394477] [2024-11-13 16:41:24,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:24,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:24,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:24,308 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:24,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 16:41:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:24,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 16:41:24,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:24,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:41:24,801 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 19 treesize of output 11 [2024-11-13 16:41:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:41:24,856 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:41:24,857 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:24,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949394477] [2024-11-13 16:41:24,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949394477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:41:24,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:41:24,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:41:24,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549276571] [2024-11-13 16:41:24,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:41:24,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:41:24,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:24,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:41:24,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:41:24,859 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:25,789 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2024-11-13 16:41:25,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:41:25,790 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-13 16:41:25,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:25,790 INFO L225 Difference]: With dead ends: 105 [2024-11-13 16:41:25,791 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 16:41:25,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:41:25,791 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 13 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:25,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 278 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:41:25,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 16:41:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-13 16:41:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 100 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2024-11-13 16:41:25,798 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 29 [2024-11-13 16:41:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:25,798 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2024-11-13 16:41:25,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2024-11-13 16:41:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 16:41:25,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:25,800 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:25,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 16:41:26,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:26,000 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:26,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:26,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1379447758, now seen corresponding path program 1 times [2024-11-13 16:41:26,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:26,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016648147] [2024-11-13 16:41:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:26,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:26,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:26,003 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:26,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 16:41:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:26,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 16:41:26,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:26,223 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:41:26,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:41:26,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:41:26,551 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 16 treesize of output 8 [2024-11-13 16:41:26,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2024-11-13 16:41:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:41:26,693 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:41:26,693 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:26,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016648147] [2024-11-13 16:41:26,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016648147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:41:26,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:41:26,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 16:41:26,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466751991] [2024-11-13 16:41:26,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:41:26,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:41:26,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:26,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:41:26,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:41:26,695 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:28,053 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2024-11-13 16:41:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:41:28,053 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-11-13 16:41:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:28,054 INFO L225 Difference]: With dead ends: 109 [2024-11-13 16:41:28,054 INFO L226 Difference]: Without dead ends: 109 [2024-11-13 16:41:28,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-13 16:41:28,057 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 29 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:28,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 335 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 16:41:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-13 16:41:28,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2024-11-13 16:41:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 102 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2024-11-13 16:41:28,062 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 31 [2024-11-13 16:41:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:28,062 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2024-11-13 16:41:28,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:28,062 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2024-11-13 16:41:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 16:41:28,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:28,063 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:28,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 16:41:28,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:28,264 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:28,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash -881004848, now seen corresponding path program 1 times [2024-11-13 16:41:28,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:28,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783573559] [2024-11-13 16:41:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:28,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:28,268 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:28,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 16:41:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:28,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 16:41:28,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:41:28,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:41:28,875 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:28,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783573559] [2024-11-13 16:41:28,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783573559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:41:28,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:41:28,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:41:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127546411] [2024-11-13 16:41:28,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:41:28,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:41:28,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:28,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:41:28,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:41:28,877 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:29,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:29,467 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2024-11-13 16:41:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:41:29,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-13 16:41:29,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:29,469 INFO L225 Difference]: With dead ends: 108 [2024-11-13 16:41:29,469 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 16:41:29,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:41:29,470 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 19 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:29,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 301 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:41:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 16:41:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-13 16:41:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 88 states have (on average 1.2840909090909092) internal successors, (113), 103 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:29,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2024-11-13 16:41:29,473 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 34 [2024-11-13 16:41:29,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:29,473 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2024-11-13 16:41:29,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:41:29,474 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2024-11-13 16:41:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:41:29,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:29,474 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:29,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 16:41:29,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:29,675 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:29,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:29,675 INFO L85 PathProgramCache]: Analyzing trace with hash 29731422, now seen corresponding path program 1 times [2024-11-13 16:41:29,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:29,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630702837] [2024-11-13 16:41:29,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:29,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:29,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:29,678 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:29,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 16:41:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:29,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 16:41:29,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:30,035 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:41:30,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:41:30,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:41:30,269 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:41:30,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 16:41:30,303 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 33 treesize of output 15 [2024-11-13 16:41:30,540 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 16:41:30,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 16:41:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:41:30,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:41:39,206 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_598 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_598) |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv8 64))))))) is different from false [2024-11-13 16:41:39,221 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_598 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv8 64)))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0) v_ArrVal_598) |c_ULTIMATE.start_create_~now~0#1.base|) .cse0)))))) is different from false [2024-11-13 16:41:39,244 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:41:39,244 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-13 16:41:39,250 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 44 treesize of output 32 [2024-11-13 16:41:39,256 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 11 treesize of output 7 [2024-11-13 16:41:39,466 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-13 16:41:39,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 15 [2024-11-13 16:41:39,970 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-13 16:41:39,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 15 [2024-11-13 16:41:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:41:40,105 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:40,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630702837] [2024-11-13 16:41:40,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630702837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:41:40,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:41:40,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2024-11-13 16:41:40,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115990127] [2024-11-13 16:41:40,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:41:40,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 16:41:40,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:40,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 16:41:40,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=233, Unknown=3, NotChecked=62, Total=342 [2024-11-13 16:41:40,107 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 16 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:41:41,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:41,901 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2024-11-13 16:41:41,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:41:41,901 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 16 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-11-13 16:41:41,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:41,902 INFO L225 Difference]: With dead ends: 107 [2024-11-13 16:41:41,902 INFO L226 Difference]: Without dead ends: 107 [2024-11-13 16:41:41,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=74, Invalid=393, Unknown=3, NotChecked=82, Total=552 [2024-11-13 16:41:41,903 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 7 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:41,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 502 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 368 Invalid, 1 Unknown, 73 Unchecked, 1.4s Time] [2024-11-13 16:41:41,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-13 16:41:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-13 16:41:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 102 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2024-11-13 16:41:41,907 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 36 [2024-11-13 16:41:41,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:41,908 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2024-11-13 16:41:41,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 16 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:41:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2024-11-13 16:41:41,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:41:41,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:41,909 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:41,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 16:41:42,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:42,110 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:42,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:42,110 INFO L85 PathProgramCache]: Analyzing trace with hash 29731423, now seen corresponding path program 1 times [2024-11-13 16:41:42,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:42,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345491672] [2024-11-13 16:41:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:42,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:42,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:42,113 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:42,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 16:41:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:42,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 16:41:42,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:42,382 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 6 treesize of output 5 [2024-11-13 16:41:42,590 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:41:42,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:41:42,673 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 16:41:42,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:41:42,999 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:41:43,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 68 [2024-11-13 16:41:43,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:41:43,121 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 44 treesize of output 20 [2024-11-13 16:41:43,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:41:43,419 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_~pi~0.base)))) is different from true [2024-11-13 16:41:43,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:41:43,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 16:41:43,512 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:41:43,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:41:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-13 16:41:43,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:41:44,181 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:44,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345491672] [2024-11-13 16:41:44,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345491672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:41:44,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1605535943] [2024-11-13 16:41:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:44,181 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:41:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:41:44,183 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:41:44,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-13 16:41:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:44,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 16:41:44,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:44,752 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 6 treesize of output 5 [2024-11-13 16:41:45,101 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 16:41:45,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-13 16:41:45,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:41:45,272 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 16:41:45,706 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:41:45,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 68 [2024-11-13 16:41:45,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:41:45,820 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 44 treesize of output 20 [2024-11-13 16:41:45,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:41:46,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:41:46,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 16:41:46,344 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-11-13 16:41:46,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-13 16:41:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-13 16:41:46,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:41:46,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1605535943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:41:46,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:41:46,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 21 [2024-11-13 16:41:46,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112813911] [2024-11-13 16:41:46,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:41:46,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 16:41:46,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:46,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 16:41:46,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=438, Unknown=1, NotChecked=42, Total=552 [2024-11-13 16:41:46,749 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 17 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 16:41:49,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:49,049 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2024-11-13 16:41:49,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:41:49,050 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 17 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2024-11-13 16:41:49,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:49,051 INFO L225 Difference]: With dead ends: 104 [2024-11-13 16:41:49,051 INFO L226 Difference]: Without dead ends: 104 [2024-11-13 16:41:49,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=113, Invalid=646, Unknown=1, NotChecked=52, Total=812 [2024-11-13 16:41:49,052 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:49,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 493 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 441 Invalid, 0 Unknown, 68 Unchecked, 1.7s Time] [2024-11-13 16:41:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-13 16:41:49,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-13 16:41:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 99 states have internal predecessors, (109), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:49,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2024-11-13 16:41:49,057 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 36 [2024-11-13 16:41:49,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:49,057 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2024-11-13 16:41:49,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 17 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 16:41:49,057 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2024-11-13 16:41:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:41:49,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:49,058 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:49,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-13 16:41:49,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-13 16:41:49,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:49,459 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:49,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:49,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1362470626, now seen corresponding path program 1 times [2024-11-13 16:41:49,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:49,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334504896] [2024-11-13 16:41:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:49,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:49,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:49,463 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:49,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 16:41:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:49,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:41:49,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:41:50,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:41:50,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:41:50,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 28 [2024-11-13 16:41:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:41:51,838 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:51,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334504896] [2024-11-13 16:41:51,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334504896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:41:51,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:41:51,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-13 16:41:51,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341218030] [2024-11-13 16:41:51,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:41:51,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 16:41:51,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:51,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 16:41:51,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:41:51,840 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 16 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:41:53,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:53,507 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2024-11-13 16:41:53,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:41:53,509 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2024-11-13 16:41:53,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:53,510 INFO L225 Difference]: With dead ends: 108 [2024-11-13 16:41:53,510 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 16:41:53,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:41:53,511 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 7 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:53,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 537 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 16:41:53,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 16:41:53,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2024-11-13 16:41:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 102 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:53,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2024-11-13 16:41:53,516 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 36 [2024-11-13 16:41:53,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:53,516 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2024-11-13 16:41:53,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:41:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2024-11-13 16:41:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 16:41:53,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:53,517 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:53,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-13 16:41:53,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:53,718 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:53,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash 529849847, now seen corresponding path program 1 times [2024-11-13 16:41:53,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:53,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509453251] [2024-11-13 16:41:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:53,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:53,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:53,721 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:53,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 16:41:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:53,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 16:41:53,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:53,986 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 8 treesize of output 1 [2024-11-13 16:41:53,994 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 8 treesize of output 1 [2024-11-13 16:41:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:41:54,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:41:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:41:55,964 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:41:55,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509453251] [2024-11-13 16:41:55,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509453251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:41:55,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:41:55,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 21 [2024-11-13 16:41:55,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194490180] [2024-11-13 16:41:55,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:41:55,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 16:41:55,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:41:55,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 16:41:55,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:41:55,967 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:41:58,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:41:58,178 INFO L93 Difference]: Finished difference Result 142 states and 166 transitions. [2024-11-13 16:41:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:41:58,179 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-11-13 16:41:58,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:41:58,179 INFO L225 Difference]: With dead ends: 142 [2024-11-13 16:41:58,179 INFO L226 Difference]: Without dead ends: 142 [2024-11-13 16:41:58,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-11-13 16:41:58,180 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 48 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:41:58,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 487 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 16:41:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-13 16:41:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 131. [2024-11-13 16:41:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 115 states have (on average 1.2695652173913043) internal successors, (146), 126 states have internal predecessors, (146), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:41:58,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2024-11-13 16:41:58,185 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 37 [2024-11-13 16:41:58,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:41:58,186 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2024-11-13 16:41:58,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:41:58,186 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2024-11-13 16:41:58,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 16:41:58,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:41:58,187 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:41:58,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 16:41:58,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:58,388 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:41:58,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:41:58,388 INFO L85 PathProgramCache]: Analyzing trace with hash -754525369, now seen corresponding path program 1 times [2024-11-13 16:41:58,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:41:58,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814041689] [2024-11-13 16:41:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:41:58,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:41:58,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:41:58,391 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:41:58,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 16:41:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:41:58,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 16:41:58,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:41:58,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:41:59,618 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 39 treesize of output 23 [2024-11-13 16:42:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:42:00,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:42:01,163 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 52 treesize of output 48 [2024-11-13 16:42:54,987 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:42:54,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814041689] [2024-11-13 16:42:54,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814041689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:42:54,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [468884607] [2024-11-13 16:42:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:42:54,987 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:42:54,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:42:54,989 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:42:54,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-13 16:42:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:42:55,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 16:42:55,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:43:01,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:43:02,621 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 38 treesize of output 22 [2024-11-13 16:43:04,420 WARN L873 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 64))) (exists ((|v_ULTIMATE.start_destroy_~l#1.base_25| (_ BitVec 64)) (|v_ULTIMATE.start_destroy_#t~mem13#1.base_16| (_ BitVec 64))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_25|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_#t~mem13#1.base_16|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_#t~mem13#1.base_16| (_ bv0 1)) |v_ULTIMATE.start_destroy_~l#1.base_25| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_25| (_ bv1 1)) |v_ULTIMATE.start_destroy_#t~mem13#1.base_16| (_ bv0 1)) |v_ULTIMATE.start_destroy_~l#1.base_25|)))))) is different from true [2024-11-13 16:43:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-11-13 16:43:04,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:43:06,076 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 96 treesize of output 88 [2024-11-13 16:43:53,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [468884607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:43:53,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:43:53,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 29 [2024-11-13 16:43:53,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778184222] [2024-11-13 16:43:53,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:43:53,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 16:43:53,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:43:53,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 16:43:53,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1914, Unknown=15, NotChecked=88, Total=2162 [2024-11-13 16:43:53,849 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand has 30 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 27 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:43:57,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:44:09,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:44:09,701 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions. [2024-11-13 16:44:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:44:09,702 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 27 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-11-13 16:44:09,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:44:09,702 INFO L225 Difference]: With dead ends: 138 [2024-11-13 16:44:09,702 INFO L226 Difference]: Without dead ends: 114 [2024-11-13 16:44:09,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 118.0s TimeCoverageRelationStatistics Valid=249, Invalid=3161, Unknown=16, NotChecked=114, Total=3540 [2024-11-13 16:44:09,704 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 97 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 16 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:44:09,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 570 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 876 Invalid, 7 Unknown, 84 Unchecked, 8.6s Time] [2024-11-13 16:44:09,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-13 16:44:09,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-13 16:44:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 109 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:44:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2024-11-13 16:44:09,708 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 38 [2024-11-13 16:44:09,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:44:09,708 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2024-11-13 16:44:09,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 27 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:44:09,709 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2024-11-13 16:44:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:44:09,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:44:09,709 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:44:09,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 16:44:09,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-13 16:44:10,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:44:10,110 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:44:10,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:44:10,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1921466328, now seen corresponding path program 1 times [2024-11-13 16:44:10,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:44:10,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870729295] [2024-11-13 16:44:10,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:44:10,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:44:10,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:44:10,115 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:44:10,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 16:44:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:44:10,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 16:44:10,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:44:10,827 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:44:10,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:44:10,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:44:11,212 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 16:44:11,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-13 16:44:11,674 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 27 treesize of output 15 [2024-11-13 16:44:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:44:11,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:44:12,234 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_895 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_895) |c_ULTIMATE.start_create_~sll~0#1.base|) (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (_ bv1 1)))) is different from false [2024-11-13 16:44:12,253 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_895 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv8 64))) v_ArrVal_895) |c_ULTIMATE.start_create_~sll~0#1.base|) (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~sll~0#1.offset|)))))) is different from false [2024-11-13 16:44:12,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:12,282 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-13 16:44:12,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:12,314 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 44 treesize of output 43 [2024-11-13 16:44:12,363 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 11 treesize of output 7 [2024-11-13 16:44:12,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:12,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 99 [2024-11-13 16:44:13,133 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:44:13,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870729295] [2024-11-13 16:44:13,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870729295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:44:13,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1964092164] [2024-11-13 16:44:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:44:13,133 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:44:13,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:44:13,135 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:44:13,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-13 16:44:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:44:13,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 16:44:13,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:44:14,045 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 16:44:14,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-13 16:44:14,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:44:14,692 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 16:44:14,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-13 16:44:15,425 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 27 treesize of output 15 [2024-11-13 16:44:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:44:15,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:44:16,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:16,366 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-13 16:44:16,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:16,394 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 44 treesize of output 43 [2024-11-13 16:44:16,399 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 11 treesize of output 7 [2024-11-13 16:44:21,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1964092164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:44:21,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:44:21,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 28 [2024-11-13 16:44:21,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925897679] [2024-11-13 16:44:21,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:44:21,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 16:44:21,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:44:21,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 16:44:21,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1189, Unknown=26, NotChecked=142, Total=1482 [2024-11-13 16:44:21,445 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand has 29 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 25 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:44:23,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:44:23,760 INFO L93 Difference]: Finished difference Result 119 states and 142 transitions. [2024-11-13 16:44:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:44:23,761 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 25 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-11-13 16:44:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:44:23,762 INFO L225 Difference]: With dead ends: 119 [2024-11-13 16:44:23,762 INFO L226 Difference]: Without dead ends: 119 [2024-11-13 16:44:23,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=151, Invalid=1391, Unknown=26, NotChecked=154, Total=1722 [2024-11-13 16:44:23,763 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 15 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:44:23,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 581 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 16:44:23,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-13 16:44:23,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2024-11-13 16:44:23,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 99 states have (on average 1.3131313131313131) internal successors, (130), 110 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:44:23,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2024-11-13 16:44:23,768 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 39 [2024-11-13 16:44:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:44:23,769 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2024-11-13 16:44:23,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 25 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:44:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2024-11-13 16:44:23,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:44:23,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:44:23,770 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:44:23,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 16:44:23,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-13 16:44:24,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:44:24,171 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:44:24,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:44:24,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1921466327, now seen corresponding path program 1 times [2024-11-13 16:44:24,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:44:24,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1026327539] [2024-11-13 16:44:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:44:24,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:44:24,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:44:24,174 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:44:24,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 16:44:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:44:24,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 16:44:24,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:44:24,686 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 6 treesize of output 5 [2024-11-13 16:44:24,907 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:44:24,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:44:25,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:44:25,057 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 11 treesize of output 7 [2024-11-13 16:44:25,376 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 16:44:25,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-13 16:44:25,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-13 16:44:26,025 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 25 treesize of output 13 [2024-11-13 16:44:26,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 16:44:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:44:26,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:44:27,969 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_988 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_989 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_988) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_989) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0)))) (forall ((v_ArrVal_988 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_988) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv8 64) .cse1)))))) is different from false [2024-11-13 16:44:28,071 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv8 64)))) (.cse2 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))) (and (forall ((v_ArrVal_988 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_988) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (forall ((v_ArrVal_988 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_989 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_988) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_989) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:44:28,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:28,140 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2024-11-13 16:44:28,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:28,191 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 50 treesize of output 43 [2024-11-13 16:44:28,197 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 13 treesize of output 5 [2024-11-13 16:44:28,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:28,289 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2024-11-13 16:44:28,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:28,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2024-11-13 16:44:28,321 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:44:28,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:44:28,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 16:44:28,339 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:44:28,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:44:28,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 16:44:29,096 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:44:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026327539] [2024-11-13 16:44:29,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026327539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:44:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [851883631] [2024-11-13 16:44:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:44:29,097 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:44:29,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:44:29,099 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:44:29,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-13 16:44:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:44:29,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 16:44:29,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:44:29,975 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 6 treesize of output 5 [2024-11-13 16:44:30,090 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:44:30,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:44:30,115 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 11 treesize of output 7 [2024-11-13 16:44:30,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:44:30,314 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 16:44:30,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-13 16:44:30,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-13 16:44:30,631 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 25 treesize of output 13 [2024-11-13 16:44:30,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 16:44:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:44:30,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:44:33,461 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:33,461 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2024-11-13 16:44:33,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:33,510 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 50 treesize of output 43 [2024-11-13 16:44:33,519 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 13 treesize of output 5 [2024-11-13 16:44:33,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:33,603 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2024-11-13 16:44:33,630 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:33,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2024-11-13 16:44:33,636 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:44:33,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:44:33,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 16:44:33,652 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:44:33,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:44:33,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 16:44:33,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [851883631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:44:33,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:44:33,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2024-11-13 16:44:33,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600704046] [2024-11-13 16:44:33,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:44:33,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 16:44:33,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:44:33,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 16:44:33,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=605, Unknown=32, NotChecked=102, Total=812 [2024-11-13 16:44:33,975 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:44:35,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:44:35,617 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2024-11-13 16:44:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 16:44:35,618 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-11-13 16:44:35,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:44:35,619 INFO L225 Difference]: With dead ends: 119 [2024-11-13 16:44:35,619 INFO L226 Difference]: Without dead ends: 119 [2024-11-13 16:44:35,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=94, Invalid=692, Unknown=34, NotChecked=110, Total=930 [2024-11-13 16:44:35,620 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 10 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:44:35,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 527 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 16:44:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-13 16:44:35,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2024-11-13 16:44:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 102 states have (on average 1.2941176470588236) internal successors, (132), 113 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:44:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 138 transitions. [2024-11-13 16:44:35,626 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 138 transitions. Word has length 39 [2024-11-13 16:44:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:44:35,627 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 138 transitions. [2024-11-13 16:44:35,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:44:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 138 transitions. [2024-11-13 16:44:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 16:44:35,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:44:35,628 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:44:35,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2024-11-13 16:44:35,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 16:44:36,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:44:36,029 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:44:36,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:44:36,029 INFO L85 PathProgramCache]: Analyzing trace with hash 919326614, now seen corresponding path program 1 times [2024-11-13 16:44:36,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:44:36,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691094999] [2024-11-13 16:44:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:44:36,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:44:36,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:44:36,032 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:44:36,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 16:44:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:44:36,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 16:44:36,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:44:36,736 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:44:36,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:44:36,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:44:37,134 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 16:44:37,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2024-11-13 16:44:37,563 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 24 treesize of output 12 [2024-11-13 16:44:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:44:37,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:44:38,282 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1082 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (bvadd |c_ULTIMATE.start_create_~now~0#1.offset| (_ bv8 64))) v_ArrVal_1082) |c_ULTIMATE.start_create_~sll~0#1.base|) (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~sll~0#1.offset|))))) is different from false [2024-11-13 16:44:38,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:38,310 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-13 16:44:38,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:38,341 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 39 treesize of output 38 [2024-11-13 16:44:38,350 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 22 treesize of output 18 [2024-11-13 16:44:39,391 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:44:39,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691094999] [2024-11-13 16:44:39,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691094999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:44:39,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1467664342] [2024-11-13 16:44:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:44:39,392 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:44:39,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:44:39,394 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:44:39,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-13 16:44:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:44:40,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 16:44:40,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:44:40,232 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:44:40,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:44:40,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:44:40,383 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 16:44:40,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2024-11-13 16:44:40,582 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 24 treesize of output 12 [2024-11-13 16:44:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:44:40,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:44:40,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:40,869 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-13 16:44:40,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:44:40,901 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 39 treesize of output 38 [2024-11-13 16:44:40,910 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 18 [2024-11-13 16:44:41,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1467664342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:44:41,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:44:41,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2024-11-13 16:44:41,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046530867] [2024-11-13 16:44:41,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:44:41,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 16:44:41,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:44:41,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 16:44:41,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=480, Unknown=16, NotChecked=44, Total=600 [2024-11-13 16:44:41,276 INFO L87 Difference]: Start difference. First operand 118 states and 138 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 15 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:44:42,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:44:42,809 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2024-11-13 16:44:42,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:44:42,809 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 15 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-13 16:44:42,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:44:42,810 INFO L225 Difference]: With dead ends: 116 [2024-11-13 16:44:42,810 INFO L226 Difference]: Without dead ends: 116 [2024-11-13 16:44:42,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=92, Invalid=704, Unknown=20, NotChecked=54, Total=870 [2024-11-13 16:44:42,810 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 17 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:44:42,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 601 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 16:44:42,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-13 16:44:42,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2024-11-13 16:44:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 99 states have (on average 1.292929292929293) internal successors, (128), 110 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:44:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 134 transitions. [2024-11-13 16:44:42,814 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 134 transitions. Word has length 42 [2024-11-13 16:44:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:44:42,814 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 134 transitions. [2024-11-13 16:44:42,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 15 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:44:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 134 transitions. [2024-11-13 16:44:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 16:44:42,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:44:42,815 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:44:42,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2024-11-13 16:44:43,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 16:44:43,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:44:43,216 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-13 16:44:43,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:44:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1192894578, now seen corresponding path program 2 times [2024-11-13 16:44:43,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:44:43,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236985006] [2024-11-13 16:44:43,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:44:43,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:44:43,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:44:43,219 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:44:43,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c6c930-2973-444f-bd8f-f0d736a656c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 16:44:43,442 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:44:43,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:44:43,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 16:44:43,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:44:43,878 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 11 treesize of output 7 [2024-11-13 16:44:43,898 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 11 treesize of output 7 [2024-11-13 16:44:44,112 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:44:44,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2024-11-13 16:44:44,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-13 16:44:44,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 16:44:44,675 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 16:44:44,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 58 [2024-11-13 16:44:44,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2024-11-13 16:44:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:44:46,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:46:17,794 WARN L286 SmtUtils]: Spent 1.27m on a formula simplification. DAG size of input: 188 DAG size of output: 145 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 16:46:17,795 INFO L349 Elim1Store]: treesize reduction 1542, result has 45.1 percent of original size [2024-11-13 16:46:17,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 17 case distinctions, treesize of input 3404 treesize of output 3095 [2024-11-13 16:46:24,933 WARN L286 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 134 DAG size of output: 74 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 16:46:24,933 INFO L349 Elim1Store]: treesize reduction 204, result has 39.5 percent of original size [2024-11-13 16:46:24,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 4524 treesize of output 3876 [2024-11-13 16:46:25,396 INFO L224 Elim1Store]: Index analysis took 344 ms [2024-11-13 16:46:28,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:46:28,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 3107 treesize of output 3197 [2024-11-13 16:46:29,039 INFO L224 Elim1Store]: Index analysis took 292 ms