./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i --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_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/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_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/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_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/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 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:34:46,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:34:46,650 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-24 00:34:46,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:34:46,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:34:46,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:34:46,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:34:46,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:34:46,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:34:46,696 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:34:46,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:34:46,696 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:34:46,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:34:46,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:34:46,697 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:34:46,697 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:34:46,697 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:34:46,698 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:34:46,698 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:34:46,698 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:34:46,698 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 00:34:46,698 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 00:34:46,699 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 00:34:46,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:34:46,699 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 00:34:46,699 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 00:34:46,699 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:34:46,699 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:34:46,700 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:34:46,700 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:34:46,700 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:34:46,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:34:46,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:34:46,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:34:46,701 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:34:46,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:34:46,701 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:34:46,701 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:34:46,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:34:46,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:34:46,702 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:34:46,702 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:34:46,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:34:46,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:34:46,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:34:46,702 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:34:46,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:34:46,703 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_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/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 -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 [2024-11-24 00:34:47,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:34:47,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:34:47,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:34:47,070 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:34:47,071 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:34:47,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2024-11-24 00:34:50,391 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/data/820239fb3/e2e4bd94f3b44fb48744f1493dc71498/FLAG9545b3e61 [2024-11-24 00:34:50,779 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:34:50,779 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2024-11-24 00:34:50,794 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/data/820239fb3/e2e4bd94f3b44fb48744f1493dc71498/FLAG9545b3e61 [2024-11-24 00:34:50,828 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/data/820239fb3/e2e4bd94f3b44fb48744f1493dc71498 [2024-11-24 00:34:50,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:34:50,834 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:34:50,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:34:50,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:34:50,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:34:50,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:34:50" (1/1) ... [2024-11-24 00:34:50,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17021b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:50, skipping insertion in model container [2024-11-24 00:34:50,850 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:34:50" (1/1) ... [2024-11-24 00:34:50,880 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:34:51,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:34:51,173 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:34:51,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:34:51,252 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:34:51,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51 WrapperNode [2024-11-24 00:34:51,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:34:51,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:34:51,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:34:51,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:34:51,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,316 INFO L138 Inliner]: procedures = 18, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 156 [2024-11-24 00:34:51,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:34:51,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:34:51,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:34:51,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:34:51,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,373 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 9, 3]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2024-11-24 00:34:51,377 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,377 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,389 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,394 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,404 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:34:51,419 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:34:51,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:34:51,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:34:51,422 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (1/1) ... [2024-11-24 00:34:51,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:34:51,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:51,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:34:51,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:34:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:34:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:34:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:34:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:34:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:34:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:34:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:34:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:34:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:34:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:34:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:34:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:34:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:34:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:34:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:34:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:34:51,611 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:34:51,613 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:34:52,130 INFO L? ?]: Removed 86 outVars from TransFormulas that were not future-live. [2024-11-24 00:34:52,130 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:34:52,146 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:34:52,150 INFO L312 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-24 00:34:52,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:34:52 BoogieIcfgContainer [2024-11-24 00:34:52,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:34:52,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:34:52,157 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:34:52,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:34:52,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:34:50" (1/3) ... [2024-11-24 00:34:52,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25651a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:34:52, skipping insertion in model container [2024-11-24 00:34:52,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:51" (2/3) ... [2024-11-24 00:34:52,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25651a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:34:52, skipping insertion in model container [2024-11-24 00:34:52,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:34:52" (3/3) ... [2024-11-24 00:34:52,171 INFO L128 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2024-11-24 00:34:52,197 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:34:52,201 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG data_structures_set_multi_proc_trivial_ground.i that has 2 procedures, 92 locations, 1 initial locations, 10 loop locations, and 26 error locations. [2024-11-24 00:34:52,256 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:34:52,272 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;@695dea81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:34:52,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-24 00:34:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 61 states have (on average 1.819672131147541) internal successors, (111), 87 states have internal predecessors, (111), 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) [2024-11-24 00:34:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-24 00:34:52,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:52,284 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-24 00:34:52,285 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:34:52,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash 28696807, now seen corresponding path program 1 times [2024-11-24 00:34:52,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:52,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745792763] [2024-11-24 00:34:52,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:52,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:52,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:52,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745792763] [2024-11-24 00:34:52,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745792763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:52,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:52,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:34:52,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151721616] [2024-11-24 00:34:52,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:52,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:52,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:52,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:52,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:52,624 INFO L87 Difference]: Start difference. First operand has 92 states, 61 states have (on average 1.819672131147541) internal successors, (111), 87 states have internal predecessors, (111), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:52,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:52,803 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2024-11-24 00:34:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:52,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-24 00:34:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:52,819 INFO L225 Difference]: With dead ends: 84 [2024-11-24 00:34:52,820 INFO L226 Difference]: Without dead ends: 82 [2024-11-24 00:34:52,822 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 [2024-11-24 00:34:52,827 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 68 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:52,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 77 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:34:52,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-24 00:34:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-24 00:34:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 77 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) [2024-11-24 00:34:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2024-11-24 00:34:52,924 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 5 [2024-11-24 00:34:52,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:52,924 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2024-11-24 00:34:52,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2024-11-24 00:34:52,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-24 00:34:52,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:52,925 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-24 00:34:52,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:34:52,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:34:52,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:52,927 INFO L85 PathProgramCache]: Analyzing trace with hash 28696808, now seen corresponding path program 1 times [2024-11-24 00:34:52,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:52,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206328266] [2024-11-24 00:34:52,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:52,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:53,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:53,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206328266] [2024-11-24 00:34:53,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206328266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:53,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:53,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:34:53,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806956985] [2024-11-24 00:34:53,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:53,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:53,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:53,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:53,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:53,135 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:53,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:53,289 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2024-11-24 00:34:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:53,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-24 00:34:53,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:53,291 INFO L225 Difference]: With dead ends: 86 [2024-11-24 00:34:53,291 INFO L226 Difference]: Without dead ends: 86 [2024-11-24 00:34:53,291 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 [2024-11-24 00:34:53,293 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:53,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 139 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:34:53,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-24 00:34:53,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2024-11-24 00:34:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 80 states have internal predecessors, (92), 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) [2024-11-24 00:34:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2024-11-24 00:34:53,303 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 5 [2024-11-24 00:34:53,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:53,303 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2024-11-24 00:34:53,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:53,304 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2024-11-24 00:34:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-24 00:34:53,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:53,305 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-24 00:34:53,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:34:53,305 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:34:53,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2139724959, now seen corresponding path program 1 times [2024-11-24 00:34:53,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:53,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929660684] [2024-11-24 00:34:53,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:53,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:53,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:53,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929660684] [2024-11-24 00:34:53,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929660684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:53,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134224025] [2024-11-24 00:34:53,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:53,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:53,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:53,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:53,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:34:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:53,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:34:53,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:53,783 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 [2024-11-24 00:34:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:53,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:34:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:54,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134224025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:34:54,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:34:54,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-24 00:34:54,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812236261] [2024-11-24 00:34:54,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:34:54,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:34:54,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:54,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:34:54,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:34:54,110 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:54,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:54,683 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2024-11-24 00:34:54,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:34:54,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-24 00:34:54,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:54,685 INFO L225 Difference]: With dead ends: 103 [2024-11-24 00:34:54,685 INFO L226 Difference]: Without dead ends: 103 [2024-11-24 00:34:54,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:34:54,686 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 16 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:54,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 411 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:34:54,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-24 00:34:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2024-11-24 00:34:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 95 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) [2024-11-24 00:34:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2024-11-24 00:34:54,702 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 9 [2024-11-24 00:34:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:54,702 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2024-11-24 00:34:54,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2024-11-24 00:34:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-24 00:34:54,703 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:54,703 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:54,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:34:54,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:54,908 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:34:54,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:54,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1403211981, now seen corresponding path program 1 times [2024-11-24 00:34:54,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:54,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151112813] [2024-11-24 00:34:54,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:54,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-24 00:34:55,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:55,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151112813] [2024-11-24 00:34:55,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151112813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:55,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:55,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:34:55,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437642593] [2024-11-24 00:34:55,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:55,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:34:55,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:55,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:34:55,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:34:55,048 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:55,120 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2024-11-24 00:34:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:34:55,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-24 00:34:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:55,122 INFO L225 Difference]: With dead ends: 111 [2024-11-24 00:34:55,122 INFO L226 Difference]: Without dead ends: 111 [2024-11-24 00:34:55,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:34:55,123 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 35 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:55,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 182 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:34:55,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-24 00:34:55,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 103. [2024-11-24 00:34:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 84 states have (on average 1.4166666666666667) internal successors, (119), 99 states have internal predecessors, (119), 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) [2024-11-24 00:34:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2024-11-24 00:34:55,136 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 24 [2024-11-24 00:34:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:55,138 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2024-11-24 00:34:55,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2024-11-24 00:34:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-24 00:34:55,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:55,140 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:55,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:34:55,140 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:34:55,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:55,140 INFO L85 PathProgramCache]: Analyzing trace with hash -547281829, now seen corresponding path program 1 times [2024-11-24 00:34:55,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:55,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758336695] [2024-11-24 00:34:55,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:55,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-24 00:34:55,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:55,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758336695] [2024-11-24 00:34:55,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758336695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:55,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:55,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:34:55,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090463952] [2024-11-24 00:34:55,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:55,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:55,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:55,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:55,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:55,276 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:55,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:55,326 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2024-11-24 00:34:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:55,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-24 00:34:55,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:55,328 INFO L225 Difference]: With dead ends: 100 [2024-11-24 00:34:55,328 INFO L226 Difference]: Without dead ends: 100 [2024-11-24 00:34:55,328 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 [2024-11-24 00:34:55,329 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 51 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:55,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 77 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:55,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-24 00:34:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-24 00:34:55,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 84 states have (on average 1.369047619047619) internal successors, (115), 96 states have internal predecessors, (115), 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) [2024-11-24 00:34:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2024-11-24 00:34:55,337 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 119 transitions. Word has length 25 [2024-11-24 00:34:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:55,337 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 119 transitions. [2024-11-24 00:34:55,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:55,338 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 119 transitions. [2024-11-24 00:34:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-24 00:34:55,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:55,338 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:55,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:34:55,339 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:34:55,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash -547281828, now seen corresponding path program 1 times [2024-11-24 00:34:55,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:55,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524415739] [2024-11-24 00:34:55,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:55,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:55,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:55,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524415739] [2024-11-24 00:34:55,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524415739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:55,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369169802] [2024-11-24 00:34:55,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:55,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:55,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:55,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:55,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:34:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:55,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:34:55,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:55,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:34:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:55,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369169802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:34:55,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:34:55,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-24 00:34:55,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823048804] [2024-11-24 00:34:55,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:34:55,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:34:55,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:55,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:34:55,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:34:55,749 INFO L87 Difference]: Start difference. First operand 100 states and 119 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:56,066 INFO L93 Difference]: Finished difference Result 344 states and 463 transitions. [2024-11-24 00:34:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:34:56,067 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-24 00:34:56,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:56,069 INFO L225 Difference]: With dead ends: 344 [2024-11-24 00:34:56,069 INFO L226 Difference]: Without dead ends: 344 [2024-11-24 00:34:56,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:34:56,070 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 329 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:56,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 287 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:34:56,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-24 00:34:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 124. [2024-11-24 00:34:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 108 states have (on average 1.287037037037037) internal successors, (139), 120 states have internal predecessors, (139), 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) [2024-11-24 00:34:56,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2024-11-24 00:34:56,085 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 25 [2024-11-24 00:34:56,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:56,086 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2024-11-24 00:34:56,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:56,086 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2024-11-24 00:34:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-24 00:34:56,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:56,091 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:56,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:34:56,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:56,295 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:34:56,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash 222939314, now seen corresponding path program 2 times [2024-11-24 00:34:56,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:56,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118188989] [2024-11-24 00:34:56,296 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:34:56,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:56,321 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:34:56,321 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:34:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 00:34:56,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:56,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118188989] [2024-11-24 00:34:56,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118188989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:56,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:56,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:34:56,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879839111] [2024-11-24 00:34:56,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:56,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:56,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:56,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:56,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:56,379 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:56,443 INFO L93 Difference]: Finished difference Result 128 states and 148 transitions. [2024-11-24 00:34:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:56,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-24 00:34:56,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:56,445 INFO L225 Difference]: With dead ends: 128 [2024-11-24 00:34:56,445 INFO L226 Difference]: Without dead ends: 128 [2024-11-24 00:34:56,445 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 [2024-11-24 00:34:56,446 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 1 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:56,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 124 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:34:56,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-24 00:34:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2024-11-24 00:34:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 111 states have (on average 1.2882882882882882) internal successors, (143), 123 states have internal predecessors, (143), 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) [2024-11-24 00:34:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2024-11-24 00:34:56,462 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 49 [2024-11-24 00:34:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:56,463 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2024-11-24 00:34:56,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2024-11-24 00:34:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-24 00:34:56,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:56,468 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:56,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:34:56,469 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:34:56,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:56,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1678748162, now seen corresponding path program 1 times [2024-11-24 00:34:56,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:56,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632424789] [2024-11-24 00:34:56,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:56,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 00:34:56,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:56,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632424789] [2024-11-24 00:34:56,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632424789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:56,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:56,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:34:56,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216784813] [2024-11-24 00:34:56,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:56,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:56,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:56,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:56,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:56,623 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:56,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:56,667 INFO L93 Difference]: Finished difference Result 163 states and 191 transitions. [2024-11-24 00:34:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:56,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-24 00:34:56,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:56,672 INFO L225 Difference]: With dead ends: 163 [2024-11-24 00:34:56,672 INFO L226 Difference]: Without dead ends: 163 [2024-11-24 00:34:56,673 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 [2024-11-24 00:34:56,673 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 36 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:56,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 134 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:56,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-24 00:34:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 128. [2024-11-24 00:34:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 112 states have (on average 1.2767857142857142) internal successors, (143), 124 states have internal predecessors, (143), 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) [2024-11-24 00:34:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2024-11-24 00:34:56,688 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 50 [2024-11-24 00:34:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:56,691 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2024-11-24 00:34:56,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2024-11-24 00:34:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-24 00:34:56,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:56,693 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:56,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:34:56,693 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:34:56,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:56,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1291205483, now seen corresponding path program 1 times [2024-11-24 00:34:56,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:56,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952473677] [2024-11-24 00:34:56,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:56,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:34:57,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:57,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952473677] [2024-11-24 00:34:57,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952473677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:57,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767195156] [2024-11-24 00:34:57,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:57,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:57,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:57,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:57,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:34:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:57,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-24 00:34:57,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:34:57,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:34:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:34:57,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767195156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:34:57,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:34:57,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-24 00:34:57,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279521606] [2024-11-24 00:34:57,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:34:57,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 00:34:57,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:57,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 00:34:57,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:34:57,881 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:58,730 INFO L93 Difference]: Finished difference Result 660 states and 899 transitions. [2024-11-24 00:34:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 00:34:58,731 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 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 53 [2024-11-24 00:34:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:58,738 INFO L225 Difference]: With dead ends: 660 [2024-11-24 00:34:58,738 INFO L226 Difference]: Without dead ends: 660 [2024-11-24 00:34:58,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:34:58,739 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 860 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:58,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 473 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:34:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-11-24 00:34:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 176. [2024-11-24 00:34:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 160 states have (on average 1.19375) internal successors, (191), 172 states have internal predecessors, (191), 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) [2024-11-24 00:34:58,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 195 transitions. [2024-11-24 00:34:58,769 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 195 transitions. Word has length 53 [2024-11-24 00:34:58,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:58,770 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 195 transitions. [2024-11-24 00:34:58,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:34:58,770 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 195 transitions. [2024-11-24 00:34:58,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 00:34:58,776 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:58,776 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:58,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:34:58,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:58,977 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:34:58,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:58,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1284642793, now seen corresponding path program 2 times [2024-11-24 00:34:58,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:58,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084841005] [2024-11-24 00:34:58,978 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:34:58,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:59,073 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:34:59,073 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:34:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 00:34:59,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:59,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084841005] [2024-11-24 00:34:59,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084841005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:59,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080637120] [2024-11-24 00:34:59,532 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:34:59,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:59,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:59,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:59,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:34:59,707 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:34:59,707 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:34:59,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 00:34:59,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:35:00,431 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:35:00,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:35:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:35:01,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080637120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:35:01,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:35:01,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 25, 25] total 51 [2024-11-24 00:35:01,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232809805] [2024-11-24 00:35:01,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:35:01,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-24 00:35:01,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:01,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-24 00:35:01,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1136, Invalid=1414, Unknown=0, NotChecked=0, Total=2550 [2024-11-24 00:35:01,827 INFO L87 Difference]: Start difference. First operand 176 states and 195 transitions. Second operand has 51 states, 51 states have (on average 4.019607843137255) internal successors, (205), 51 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:35:03,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:03,869 INFO L93 Difference]: Finished difference Result 1285 states and 1764 transitions. [2024-11-24 00:35:03,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-24 00:35:03,870 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.019607843137255) internal successors, (205), 51 states have internal predecessors, (205), 0 states have call successors, (0), 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 101 [2024-11-24 00:35:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:03,879 INFO L225 Difference]: With dead ends: 1285 [2024-11-24 00:35:03,879 INFO L226 Difference]: Without dead ends: 1285 [2024-11-24 00:35:03,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1141, Invalid=1511, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 00:35:03,881 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 2285 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:03,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2377 Valid, 879 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 00:35:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2024-11-24 00:35:03,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 273. [2024-11-24 00:35:03,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 258 states have (on average 1.1162790697674418) internal successors, (288), 269 states have internal predecessors, (288), 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) [2024-11-24 00:35:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 292 transitions. [2024-11-24 00:35:03,944 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 292 transitions. Word has length 101 [2024-11-24 00:35:03,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:35:03,945 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 292 transitions. [2024-11-24 00:35:03,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.019607843137255) internal successors, (205), 51 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:35:03,945 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 292 transitions. [2024-11-24 00:35:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-24 00:35:03,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:35:03,948 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:35:03,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:35:04,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 00:35:04,149 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:35:04,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:35:04,150 INFO L85 PathProgramCache]: Analyzing trace with hash -302233656, now seen corresponding path program 1 times [2024-11-24 00:35:04,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:35:04,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441629369] [2024-11-24 00:35:04,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:04,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:35:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4192 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4187 trivial. 0 not checked. [2024-11-24 00:35:04,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:04,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441629369] [2024-11-24 00:35:04,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441629369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:35:04,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351171736] [2024-11-24 00:35:04,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:04,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:35:04,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:35:04,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:35:04,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:35:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:05,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-24 00:35:05,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:35:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4192 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:35:06,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:35:11,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4192 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:35:11,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351171736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:35:11,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:35:11,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 49, 49] total 99 [2024-11-24 00:35:11,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224983343] [2024-11-24 00:35:11,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:35:11,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-24 00:35:11,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:11,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-24 00:35:11,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4568, Invalid=5134, Unknown=0, NotChecked=0, Total=9702 [2024-11-24 00:35:11,023 INFO L87 Difference]: Start difference. First operand 273 states and 292 transitions. Second operand has 99 states, 99 states have (on average 4.090909090909091) internal successors, (405), 99 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:35:38,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:38,531 INFO L93 Difference]: Finished difference Result 3601 states and 5037 transitions. [2024-11-24 00:35:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2024-11-24 00:35:38,532 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 4.090909090909091) internal successors, (405), 99 states have internal predecessors, (405), 0 states have call successors, (0), 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 202 [2024-11-24 00:35:38,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:38,551 INFO L225 Difference]: With dead ends: 3601 [2024-11-24 00:35:38,552 INFO L226 Difference]: Without dead ends: 3601 [2024-11-24 00:35:38,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19931 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=27457, Invalid=54625, Unknown=0, NotChecked=0, Total=82082 [2024-11-24 00:35:38,569 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 13926 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 2139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13929 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 4000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2139 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:38,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13929 Valid, 980 Invalid, 4000 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2139 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-24 00:35:38,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2024-11-24 00:35:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 474. [2024-11-24 00:35:38,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 459 states have (on average 1.0762527233115469) internal successors, (494), 470 states have internal predecessors, (494), 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) [2024-11-24 00:35:38,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 498 transitions. [2024-11-24 00:35:38,695 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 498 transitions. Word has length 202 [2024-11-24 00:35:38,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:35:38,696 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 498 transitions. [2024-11-24 00:35:38,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 4.090909090909091) internal successors, (405), 99 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:35:38,697 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 498 transitions. [2024-11-24 00:35:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-24 00:35:38,710 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:35:38,710 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:35:38,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:35:38,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-24 00:35:38,911 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:35:38,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:35:38,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1488788357, now seen corresponding path program 1 times [2024-11-24 00:35:38,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:35:38,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814857984] [2024-11-24 00:35:38,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:38,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:35:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2024-11-24 00:35:39,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:39,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814857984] [2024-11-24 00:35:39,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814857984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:35:39,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:35:39,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:35:39,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123854102] [2024-11-24 00:35:39,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:35:39,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:35:39,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:39,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:35:39,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:35:39,989 INFO L87 Difference]: Start difference. First operand 474 states and 498 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:35:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:40,037 INFO L93 Difference]: Finished difference Result 474 states and 489 transitions. [2024-11-24 00:35:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:35:40,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 397 [2024-11-24 00:35:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:40,041 INFO L225 Difference]: With dead ends: 474 [2024-11-24 00:35:40,041 INFO L226 Difference]: Without dead ends: 474 [2024-11-24 00:35:40,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:35:40,042 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 14 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:40,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 191 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:35:40,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-24 00:35:40,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 470. [2024-11-24 00:35:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 455 states have (on average 1.0593406593406594) internal successors, (482), 466 states have internal predecessors, (482), 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) [2024-11-24 00:35:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 486 transitions. [2024-11-24 00:35:40,067 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 486 transitions. Word has length 397 [2024-11-24 00:35:40,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:35:40,069 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 486 transitions. [2024-11-24 00:35:40,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:35:40,069 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 486 transitions. [2024-11-24 00:35:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-24 00:35:40,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:35:40,078 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:35:40,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:35:40,079 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:35:40,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:35:40,079 INFO L85 PathProgramCache]: Analyzing trace with hash 205643395, now seen corresponding path program 1 times [2024-11-24 00:35:40,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:35:40,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4732743] [2024-11-24 00:35:40,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:40,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:35:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2024-11-24 00:35:40,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:40,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4732743] [2024-11-24 00:35:40,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4732743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:35:40,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:35:40,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:35:40,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390909560] [2024-11-24 00:35:40,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:35:40,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:35:40,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:40,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:35:40,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:35:40,677 INFO L87 Difference]: Start difference. First operand 470 states and 486 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:35:40,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:40,685 INFO L93 Difference]: Finished difference Result 415 states and 417 transitions. [2024-11-24 00:35:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:35:40,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 402 [2024-11-24 00:35:40,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:40,688 INFO L225 Difference]: With dead ends: 415 [2024-11-24 00:35:40,689 INFO L226 Difference]: Without dead ends: 415 [2024-11-24 00:35:40,689 INFO L434 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 [2024-11-24 00:35:40,690 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:40,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:35:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-24 00:35:40,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 410. [2024-11-24 00:35:40,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 408 states have (on average 1.0098039215686274) internal successors, (412), 409 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:35:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 412 transitions. [2024-11-24 00:35:40,709 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 412 transitions. Word has length 402 [2024-11-24 00:35:40,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:35:40,709 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 412 transitions. [2024-11-24 00:35:40,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:35:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 412 transitions. [2024-11-24 00:35:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-24 00:35:40,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:35:40,718 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:35:40,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:35:40,719 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:35:40,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:35:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash 410942659, now seen corresponding path program 1 times [2024-11-24 00:35:40,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:35:40,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731206964] [2024-11-24 00:35:40,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:35:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 17586 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 00:35:51,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:51,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731206964] [2024-11-24 00:35:51,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731206964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:35:51,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972660564] [2024-11-24 00:35:51,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:51,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:35:51,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:35:51,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:35:51,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:35:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:52,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-24 00:35:52,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:35:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 17586 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 00:35:52,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:36:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 17586 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 00:36:05,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972660564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:36:05,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:36:05,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-24 00:36:05,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093339520] [2024-11-24 00:36:05,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:36:05,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-24 00:36:05,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:05,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-24 00:36:05,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-24 00:36:05,774 INFO L87 Difference]: Start difference. First operand 410 states and 412 transitions. Second operand has 193 states, 193 states have (on average 4.051813471502591) internal successors, (782), 193 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:36:07,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:07,594 INFO L93 Difference]: Finished difference Result 794 states and 796 transitions. [2024-11-24 00:36:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-24 00:36:07,595 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 4.051813471502591) internal successors, (782), 193 states have internal predecessors, (782), 0 states have call successors, (0), 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 404 [2024-11-24 00:36:07,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:07,598 INFO L225 Difference]: With dead ends: 794 [2024-11-24 00:36:07,598 INFO L226 Difference]: Without dead ends: 794 [2024-11-24 00:36:07,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-24 00:36:07,601 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:07,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 316 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:36:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2024-11-24 00:36:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2024-11-24 00:36:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 792 states have (on average 1.005050505050505) internal successors, (796), 793 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:36:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 796 transitions. [2024-11-24 00:36:07,618 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 796 transitions. Word has length 404 [2024-11-24 00:36:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:07,619 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 796 transitions. [2024-11-24 00:36:07,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 4.051813471502591) internal successors, (782), 193 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:36:07,620 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 796 transitions. [2024-11-24 00:36:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-11-24 00:36:07,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:07,641 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:07,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 00:36:07,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 00:36:07,845 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:36:07,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:07,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2066631523, now seen corresponding path program 2 times [2024-11-24 00:36:07,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:07,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093390533] [2024-11-24 00:36:07,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:36:07,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:08,041 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:36:08,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:36:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 72018 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72016 trivial. 0 not checked. [2024-11-24 00:36:09,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:09,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093390533] [2024-11-24 00:36:09,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093390533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:36:09,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341611174] [2024-11-24 00:36:09,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:36:09,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:36:09,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:36:09,811 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:36:09,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:36:10,489 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:36:10,489 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:36:10,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-24 00:36:10,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:36:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 72018 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 00:36:26,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:37:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 72018 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 00:37:13,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341611174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:37:13,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:37:13,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 193, 193] total 388 [2024-11-24 00:37:13,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086646521] [2024-11-24 00:37:13,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:37:13,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 388 states [2024-11-24 00:37:13,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:37:13,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 388 interpolants. [2024-11-24 00:37:13,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73548, Invalid=76608, Unknown=0, NotChecked=0, Total=150156 [2024-11-24 00:37:13,120 INFO L87 Difference]: Start difference. First operand 794 states and 796 transitions. Second operand has 388 states, 388 states have (on average 4.051546391752577) internal successors, (1572), 388 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:37:23,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:37:23,805 INFO L93 Difference]: Finished difference Result 1570 states and 1572 transitions. [2024-11-24 00:37:23,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 391 states. [2024-11-24 00:37:23,807 INFO L78 Accepts]: Start accepts. Automaton has has 388 states, 388 states have (on average 4.051546391752577) internal successors, (1572), 388 states have internal predecessors, (1572), 0 states have call successors, (0), 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 788 [2024-11-24 00:37:23,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:37:23,811 INFO L225 Difference]: With dead ends: 1570 [2024-11-24 00:37:23,811 INFO L226 Difference]: Without dead ends: 1570 [2024-11-24 00:37:23,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1583 GetRequests, 1193 SyntacticMatches, 0 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 60.8s TimeCoverageRelationStatistics Valid=74719, Invalid=78553, Unknown=0, NotChecked=0, Total=153272 [2024-11-24 00:37:23,821 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 43 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:37:23,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 488 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 00:37:23,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2024-11-24 00:37:23,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1570. [2024-11-24 00:37:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1569 states have (on average 1.0019120458891013) internal successors, (1572), 1569 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:37:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 1572 transitions. [2024-11-24 00:37:23,849 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 1572 transitions. Word has length 788 [2024-11-24 00:37:23,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:37:23,850 INFO L471 AbstractCegarLoop]: Abstraction has 1570 states and 1572 transitions. [2024-11-24 00:37:23,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 388 states, 388 states have (on average 4.051546391752577) internal successors, (1572), 388 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:37:23,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 1572 transitions. [2024-11-24 00:37:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1570 [2024-11-24 00:37:23,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:37:23,925 INFO L218 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:37:23,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:37:24,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 00:37:24,126 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:37:24,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:24,127 INFO L85 PathProgramCache]: Analyzing trace with hash 24632275, now seen corresponding path program 1 times [2024-11-24 00:37:24,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:24,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896266879] [2024-11-24 00:37:24,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:24,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 291484 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-24 00:39:48,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:48,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896266879] [2024-11-24 00:39:48,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896266879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:39:48,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531552831] [2024-11-24 00:39:48,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:48,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:48,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:48,752 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:39:48,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:39:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:50,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 5137 conjuncts, 384 conjuncts are in the unsatisfiable core [2024-11-24 00:39:50,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:39:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 291484 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-24 00:39:52,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:42:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 291484 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-24 00:42:55,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531552831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:42:55,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:42:55,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [385, 385, 385] total 769 [2024-11-24 00:42:55,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134802672] [2024-11-24 00:42:55,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:42:55,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 769 states [2024-11-24 00:42:55,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:55,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 769 interpolants. [2024-11-24 00:42:55,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2024-11-24 00:42:55,584 INFO L87 Difference]: Start difference. First operand 1570 states and 1572 transitions. Second operand has 769 states, 769 states have (on average 4.018205461638492) internal successors, (3090), 769 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:48,501 INFO L93 Difference]: Finished difference Result 3106 states and 3108 transitions. [2024-11-24 00:43:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2024-11-24 00:43:48,504 INFO L78 Accepts]: Start accepts. Automaton has has 769 states, 769 states have (on average 4.018205461638492) internal successors, (3090), 769 states have internal predecessors, (3090), 0 states have call successors, (0), 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 1569 [2024-11-24 00:43:48,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:48,513 INFO L225 Difference]: With dead ends: 3106 [2024-11-24 00:43:48,513 INFO L226 Difference]: Without dead ends: 3106 [2024-11-24 00:43:48,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3521 GetRequests, 2754 SyntacticMatches, 0 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 241.3s TimeCoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2024-11-24 00:43:48,553 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:48,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1000 Invalid, 2366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 00:43:48,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2024-11-24 00:43:48,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 3106. [2024-11-24 00:43:48,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 3105 states have (on average 1.0009661835748793) internal successors, (3108), 3105 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:48,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 3108 transitions. [2024-11-24 00:43:48,607 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 3108 transitions. Word has length 1569 [2024-11-24 00:43:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:48,609 INFO L471 AbstractCegarLoop]: Abstraction has 3106 states and 3108 transitions. [2024-11-24 00:43:48,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 769 states, 769 states have (on average 4.018205461638492) internal successors, (3090), 769 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 3108 transitions. [2024-11-24 00:43:48,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3106 [2024-11-24 00:43:48,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:48,763 INFO L218 NwaCegarLoop]: trace histogram [766, 766, 766, 766, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:48,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:43:48,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:43:48,964 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-24 00:43:48,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:48,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1162326355, now seen corresponding path program 2 times [2024-11-24 00:43:48,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:48,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321502111] [2024-11-24 00:43:48,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:43:48,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:49,348 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:43:49,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:43:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1172764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1172764 trivial. 0 not checked. [2024-11-24 00:43:49,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:49,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321502111] [2024-11-24 00:43:49,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321502111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:43:49,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:43:49,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:43:49,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089291383] [2024-11-24 00:43:49,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:43:49,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:43:49,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:49,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:43:49,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:43:49,596 INFO L87 Difference]: Start difference. First operand 3106 states and 3108 transitions. Second operand has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:49,628 INFO L93 Difference]: Finished difference Result 3105 states and 3107 transitions. [2024-11-24 00:43:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:43:49,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3105 [2024-11-24 00:43:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:49,631 INFO L225 Difference]: With dead ends: 3105 [2024-11-24 00:43:49,631 INFO L226 Difference]: Without dead ends: 0 [2024-11-24 00:43:49,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:43:49,632 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:49,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:43:49,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-24 00:43:49,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-24 00:43:49,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:49,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-24 00:43:49,634 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3105 [2024-11-24 00:43:49,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:49,635 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 00:43:49,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:43:49,635 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-24 00:43:49,635 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-24 00:43:49,638 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 26 remaining) [2024-11-24 00:43:49,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2024-11-24 00:43:49,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2024-11-24 00:43:49,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2024-11-24 00:43:49,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2024-11-24 00:43:49,639 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2024-11-24 00:43:49,640 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2024-11-24 00:43:49,640 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2024-11-24 00:43:49,640 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2024-11-24 00:43:49,640 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2024-11-24 00:43:49,640 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2024-11-24 00:43:49,640 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2024-11-24 00:43:49,640 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2024-11-24 00:43:49,641 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2024-11-24 00:43:49,641 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2024-11-24 00:43:49,641 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2024-11-24 00:43:49,641 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2024-11-24 00:43:49,641 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 26 remaining) [2024-11-24 00:43:49,641 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 26 remaining) [2024-11-24 00:43:49,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 26 remaining) [2024-11-24 00:43:49,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2024-11-24 00:43:49,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2024-11-24 00:43:49,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2024-11-24 00:43:49,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2024-11-24 00:43:49,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (1 of 26 remaining) [2024-11-24 00:43:49,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 26 remaining) [2024-11-24 00:43:49,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:43:49,646 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:49,649 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:43:49,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:43:49 BoogieIcfgContainer [2024-11-24 00:43:49,654 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:43:49,655 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:43:49,655 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:43:49,655 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:43:49,656 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:34:52" (3/4) ... [2024-11-24 00:43:49,659 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-24 00:43:49,666 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-24 00:43:49,671 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-11-24 00:43:49,672 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-24 00:43:49,672 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-24 00:43:49,672 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-24 00:43:49,800 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 00:43:49,800 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 00:43:49,801 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:43:49,802 INFO L158 Benchmark]: Toolchain (without parser) took 538967.71ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 94.4MB in the beginning and 802.6MB in the end (delta: -708.2MB). Peak memory consumption was 405.0MB. Max. memory is 16.1GB. [2024-11-24 00:43:49,803 INFO L158 Benchmark]: CDTParser took 1.79ms. Allocated memory is still 167.8MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:43:49,803 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.27ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 82.3MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:43:49,803 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.44ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 80.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:43:49,804 INFO L158 Benchmark]: Boogie Preprocessor took 94.35ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 78.6MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:43:49,804 INFO L158 Benchmark]: RCFGBuilder took 731.34ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 58.3MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 00:43:49,805 INFO L158 Benchmark]: TraceAbstraction took 537500.51ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 58.0MB in the beginning and 807.1MB in the end (delta: -749.1MB). Peak memory consumption was 363.0MB. Max. memory is 16.1GB. [2024-11-24 00:43:49,806 INFO L158 Benchmark]: Witness Printer took 146.13ms. Allocated memory is still 1.2GB. Free memory was 807.1MB in the beginning and 802.6MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:43:49,809 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.79ms. Allocated memory is still 167.8MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 416.27ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 82.3MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.44ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 80.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 94.35ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 78.6MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 731.34ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 58.3MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 537500.51ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 58.0MB in the beginning and 807.1MB in the end (delta: -749.1MB). Peak memory consumption was 363.0MB. Max. memory is 16.1GB. * Witness Printer took 146.13ms. Allocated memory is still 1.2GB. Free memory was 807.1MB in the beginning and 802.6MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 92 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 537.4s, OverallIterations: 17, TraceHistogramMax: 766, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.3s, AutomataDifference: 97.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17845 SdHoareTripleChecker+Valid, 12.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17677 mSDsluCounter, 5913 SdHoareTripleChecker+Invalid, 9.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4941 mSDsCounter, 2851 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8065 IncrementalHoareTripleChecker+Invalid, 10916 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2851 mSolverCounterUnsat, 972 mSDtfsCounter, 8065 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7030 GetRequests, 5289 SyntacticMatches, 0 SemanticMatches, 1741 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23736 ImplicationChecksByTransitivity, 339.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3106occurred in iteration=16, InterpolantAutomatonStates: 1764, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 17 MinimizatonAttempts, 4900 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 429.8s InterpolantComputationTime, 10364 NumberOfCodeBlocks, 7232 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 13482 ConstructedInterpolants, 0 QuantifiedInterpolants, 65223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 10467 ConjunctsInSsa, 771 ConjunctsInUnsatCore, 33 InterpolantComputations, 9 PerfectInterpolantSequences, 1285638/2367727 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 - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-24 00:43:49,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4a72-76b0-4988-8523-bb8bbc0697c1/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 Result: TRUE