./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db4b4fb03b1dcc2b831885b6cb4b7f01d511832c58de7e20715e49b64db06c6b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:51:11,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:51:11,527 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-23 22:51:11,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:51:11,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:51:11,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:51:11,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:51:11,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:51:11,582 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:51:11,582 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:51:11,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:51:11,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:51:11,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:51:11,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:51:11,585 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:51:11,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:51:11,586 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:51:11,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:51:11,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:51:11,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:51:11,587 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-23 22:51:11,587 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-23 22:51:11,588 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-23 22:51:11,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:51:11,588 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 22:51:11,588 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 22:51:11,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:51:11,588 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:51:11,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:51:11,589 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:51:11,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:51:11,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:51:11,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:51:11,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:51:11,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:51:11,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:51:11,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:51:11,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:51:11,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:51:11,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:51:11,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:51:11,592 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:51:11,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:51:11,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:51:11,593 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:51:11,593 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:51:11,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:51:11,593 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_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db4b4fb03b1dcc2b831885b6cb4b7f01d511832c58de7e20715e49b64db06c6b [2024-11-23 22:51:11,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:51:11,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:51:11,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:51:11,948 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:51:11,949 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:51:11,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2024-11-23 22:51:15,140 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/data/caff9968e/59cfe7d97b3d46198cab1659f49b4725/FLAG3e0e7c120 [2024-11-23 22:51:15,449 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:51:15,450 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2024-11-23 22:51:15,458 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/data/caff9968e/59cfe7d97b3d46198cab1659f49b4725/FLAG3e0e7c120 [2024-11-23 22:51:15,474 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/data/caff9968e/59cfe7d97b3d46198cab1659f49b4725 [2024-11-23 22:51:15,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:51:15,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:51:15,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:51:15,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:51:15,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:51:15,484 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,485 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8179f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15, skipping insertion in model container [2024-11-23 22:51:15,485 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,500 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:51:15,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:51:15,707 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:51:15,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:51:15,748 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:51:15,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15 WrapperNode [2024-11-23 22:51:15,751 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:51:15,752 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:51:15,752 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:51:15,752 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:51:15,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,796 INFO L138 Inliner]: procedures = 9, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2024-11-23 22:51:15,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:51:15,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:51:15,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:51:15,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:51:15,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,814 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,835 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 2 writes are split as follows [1, 1]. [2024-11-23 22:51:15,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,848 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,849 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:51:15,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:51:15,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:51:15,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:51:15,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (1/1) ... [2024-11-23 22:51:15,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:51:15,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:51:15,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:51:15,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:51:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 22:51:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 22:51:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:51:15,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:51:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 22:51:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 22:51:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 22:51:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 22:51:16,039 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:51:16,042 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:51:16,283 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-23 22:51:16,283 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:51:16,294 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:51:16,295 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 22:51:16,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:51:16 BoogieIcfgContainer [2024-11-23 22:51:16,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:51:16,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:51:16,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:51:16,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:51:16,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:51:15" (1/3) ... [2024-11-23 22:51:16,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b79b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:51:16, skipping insertion in model container [2024-11-23 22:51:16,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:15" (2/3) ... [2024-11-23 22:51:16,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b79b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:51:16, skipping insertion in model container [2024-11-23 22:51:16,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:51:16" (3/3) ... [2024-11-23 22:51:16,310 INFO L128 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2024-11-23 22:51:16,330 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:51:16,334 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ArraysOfVariableLength2_-write.c that has 1 procedures, 38 locations, 1 initial locations, 4 loop locations, and 11 error locations. [2024-11-23 22:51:16,384 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:51:16,402 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;@2eae5bba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:51:16,402 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-23 22:51:16,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-23 22:51:16,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:16,413 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 22:51:16,414 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-23 22:51:16,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 891323082, now seen corresponding path program 1 times [2024-11-23 22:51:16,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:16,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343309205] [2024-11-23 22:51:16,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:16,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:51:16,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:16,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343309205] [2024-11-23 22:51:16,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343309205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:16,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:16,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:51:16,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443533216] [2024-11-23 22:51:16,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:16,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:51:16,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:16,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:51:16,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:51:16,608 INFO L87 Difference]: Start difference. First operand has 38 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:16,623 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-23 22:51:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:51:16,625 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-23 22:51:16,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:16,632 INFO L225 Difference]: With dead ends: 38 [2024-11-23 22:51:16,632 INFO L226 Difference]: Without dead ends: 36 [2024-11-23 22:51:16,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:51:16,637 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:16,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:51:16,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-23 22:51:16,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-23 22:51:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.64) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-23 22:51:16,670 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 6 [2024-11-23 22:51:16,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:16,670 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-23 22:51:16,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:16,671 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-23 22:51:16,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-23 22:51:16,671 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:16,671 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 22:51:16,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:51:16,672 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-23 22:51:16,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash 889601164, now seen corresponding path program 1 times [2024-11-23 22:51:16,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:16,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796606333] [2024-11-23 22:51:16,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:51:16,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:16,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796606333] [2024-11-23 22:51:16,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796606333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:16,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:16,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:51:16,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622499623] [2024-11-23 22:51:16,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:16,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:51:16,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:16,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:51:16,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:51:16,990 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:17,093 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-11-23 22:51:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:51:17,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-23 22:51:17,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:17,095 INFO L225 Difference]: With dead ends: 34 [2024-11-23 22:51:17,096 INFO L226 Difference]: Without dead ends: 34 [2024-11-23 22:51:17,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:51:17,097 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:17,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 36 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:51:17,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-23 22:51:17,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-23 22:51:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.56) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-23 22:51:17,101 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 6 [2024-11-23 22:51:17,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:17,102 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-23 22:51:17,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-23 22:51:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-23 22:51:17,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:17,103 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 22:51:17,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:51:17,103 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-23 22:51:17,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:17,104 INFO L85 PathProgramCache]: Analyzing trace with hash 889601165, now seen corresponding path program 1 times [2024-11-23 22:51:17,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:17,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509761409] [2024-11-23 22:51:17,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:17,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:17,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:51:17,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:17,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509761409] [2024-11-23 22:51:17,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509761409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:17,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:17,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:51:17,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371849594] [2024-11-23 22:51:17,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:17,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:51:17,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:17,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:51:17,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:51:17,480 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:17,688 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2024-11-23 22:51:17,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:51:17,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-23 22:51:17,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:17,692 INFO L225 Difference]: With dead ends: 73 [2024-11-23 22:51:17,692 INFO L226 Difference]: Without dead ends: 73 [2024-11-23 22:51:17,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:51:17,695 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 54 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:17,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 56 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:51:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-23 22:51:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 38. [2024-11-23 22:51:17,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2024-11-23 22:51:17,707 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 6 [2024-11-23 22:51:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:17,707 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2024-11-23 22:51:17,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2024-11-23 22:51:17,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-23 22:51:17,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:17,708 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 22:51:17,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:51:17,708 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-23 22:51:17,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:17,709 INFO L85 PathProgramCache]: Analyzing trace with hash 889714369, now seen corresponding path program 1 times [2024-11-23 22:51:17,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:17,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077137076] [2024-11-23 22:51:17,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:51:17,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:17,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077137076] [2024-11-23 22:51:17,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077137076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:17,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:17,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:51:17,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829467059] [2024-11-23 22:51:17,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:17,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:51:17,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:17,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:51:17,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:51:17,735 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:17,772 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2024-11-23 22:51:17,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:51:17,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-23 22:51:17,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:17,773 INFO L225 Difference]: With dead ends: 57 [2024-11-23 22:51:17,774 INFO L226 Difference]: Without dead ends: 57 [2024-11-23 22:51:17,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:51:17,775 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:17,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 51 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:51:17,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-23 22:51:17,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 37. [2024-11-23 22:51:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.5) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-11-23 22:51:17,779 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 6 [2024-11-23 22:51:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:17,779 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-11-23 22:51:17,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,779 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-11-23 22:51:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-23 22:51:17,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:17,780 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:17,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:51:17,780 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-23 22:51:17,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:17,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1807832303, now seen corresponding path program 1 times [2024-11-23 22:51:17,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:17,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438533669] [2024-11-23 22:51:17,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:17,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:51:17,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:17,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438533669] [2024-11-23 22:51:17,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438533669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:17,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:17,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:51:17,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930812032] [2024-11-23 22:51:17,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:17,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:51:17,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:17,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:51:17,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:51:17,824 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:17,859 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-23 22:51:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:51:17,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-23 22:51:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:17,860 INFO L225 Difference]: With dead ends: 36 [2024-11-23 22:51:17,860 INFO L226 Difference]: Without dead ends: 36 [2024-11-23 22:51:17,860 INFO L434 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 [2024-11-23 22:51:17,861 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:17,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 37 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:51:17,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-23 22:51:17,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-23 22:51:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-23 22:51:17,865 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 7 [2024-11-23 22:51:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:17,865 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-23 22:51:17,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:51:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-23 22:51:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-23 22:51:17,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:17,866 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:17,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:51:17,866 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-23 22:51:17,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:17,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1807832304, now seen corresponding path program 1 times [2024-11-23 22:51:17,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:17,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068692322] [2024-11-23 22:51:17,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:17,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:51:17,882 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 22:51:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:51:17,914 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 22:51:17,914 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 22:51:17,915 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2024-11-23 22:51:17,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2024-11-23 22:51:17,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2024-11-23 22:51:17,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2024-11-23 22:51:17,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2024-11-23 22:51:17,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2024-11-23 22:51:17,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2024-11-23 22:51:17,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2024-11-23 22:51:17,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2024-11-23 22:51:17,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2024-11-23 22:51:17,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2024-11-23 22:51:17,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:51:17,925 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-23 22:51:17,948 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 22:51:17,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:51:17 BoogieIcfgContainer [2024-11-23 22:51:17,953 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 22:51:17,954 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 22:51:17,954 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 22:51:17,954 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 22:51:17,958 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:51:16" (3/4) ... [2024-11-23 22:51:17,959 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-23 22:51:18,009 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 4. [2024-11-23 22:51:18,057 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-23 22:51:18,057 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-23 22:51:18,057 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 22:51:18,059 INFO L158 Benchmark]: Toolchain (without parser) took 2580.42ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 75.9MB in the end (delta: 31.5MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2024-11-23 22:51:18,060 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 167.8MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:51:18,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.70ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 96.6MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 22:51:18,060 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.59ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 95.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:51:18,060 INFO L158 Benchmark]: Boogie Preprocessor took 65.49ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 93.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:51:18,061 INFO L158 Benchmark]: RCFGBuilder took 431.72ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 79.5MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 22:51:18,061 INFO L158 Benchmark]: TraceAbstraction took 1655.60ms. Allocated memory is still 142.6MB. Free memory was 79.1MB in the beginning and 80.1MB in the end (delta: -917.5kB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2024-11-23 22:51:18,061 INFO L158 Benchmark]: Witness Printer took 103.51ms. Allocated memory is still 142.6MB. Free memory was 80.1MB in the beginning and 75.9MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 22:51:18,066 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 167.8MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.70ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 96.6MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.59ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 95.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 65.49ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 93.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 431.72ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 79.5MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1655.60ms. Allocated memory is still 142.6MB. Free memory was 79.1MB in the beginning and 80.1MB in the end (delta: -917.5kB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * Witness Printer took 103.51ms. Allocated memory is still 142.6MB. Free memory was 80.1MB in the beginning and 75.9MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={3:0}, i=0] [L33] COND TRUE i < 100 VAL [b={3:0}, i=0] [L34] CALL foo(i, b, i + 1) [L21] int a[n], i; [L22] i = 0 VAL [a={2:0}, b={3:0}, i=0, size=1] [L22] COND TRUE i < size VAL [a={2:0}, b={3:0}, i=0, size=1] [L23] EXPR b[i] [L23] a[i] = b[i] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 134 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 223 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 132 IncrementalHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 145 mSDtfsCounter, 132 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 55 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-23 22:51:18,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a90bd3b-523d-4cb7-bbf8-145c2e0c68c1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)