./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-15/array16_alloca_fixed.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-15/array16_alloca_fixed.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2a580f3a42bca030605af1bbd4c6a77550e46d88a6197c1e34cf45bb050eadef --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:01:17,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:01:17,193 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-28 04:01:17,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:01:17,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:01:17,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:01:17,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:01:17,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:01:17,248 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:01:17,248 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:01:17,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:01:17,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:01:17,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:01:17,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:01:17,251 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:01:17,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:01:17,251 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:01:17,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:01:17,252 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:01:17,252 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:01:17,252 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:01:17,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:01:17,252 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:01:17,252 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:01:17,252 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:01:17,252 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:01:17,252 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:01:17,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:01:17,252 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:01:17,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:01:17,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:01:17,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:01:17,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:01:17,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:01:17,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:01:17,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:01:17,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:01:17,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:01:17,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:01:17,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:01:17,255 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:01:17,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:01:17,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:01:17,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:01:17,256 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_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a580f3a42bca030605af1bbd4c6a77550e46d88a6197c1e34cf45bb050eadef [2024-11-28 04:01:17,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:01:17,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:01:17,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:01:17,690 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:01:17,691 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:01:17,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-15/array16_alloca_fixed.i [2024-11-28 04:01:21,111 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/data/44c2e7bc5/b0edf7fc64ee4b1eb54149fe2c6a83ac/FLAGabbfd7c53 [2024-11-28 04:01:21,595 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:01:21,596 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/sv-benchmarks/c/termination-15/array16_alloca_fixed.i [2024-11-28 04:01:21,613 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/data/44c2e7bc5/b0edf7fc64ee4b1eb54149fe2c6a83ac/FLAGabbfd7c53 [2024-11-28 04:01:21,700 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/data/44c2e7bc5/b0edf7fc64ee4b1eb54149fe2c6a83ac [2024-11-28 04:01:21,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:01:21,706 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:01:21,708 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:01:21,708 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:01:21,712 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:01:21,713 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:01:21" (1/1) ... [2024-11-28 04:01:21,714 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ef8949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:21, skipping insertion in model container [2024-11-28 04:01:21,714 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:01:21" (1/1) ... [2024-11-28 04:01:21,746 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:01:22,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:01:22,237 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:01:22,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:01:22,331 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:01:22,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22 WrapperNode [2024-11-28 04:01:22,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:01:22,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:01:22,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:01:22,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:01:22,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,394 INFO L138 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2024-11-28 04:01:22,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:01:22,396 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:01:22,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:01:22,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:01:22,409 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,444 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-11-28 04:01:22,448 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,459 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,470 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:01:22,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:01:22,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:01:22,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:01:22,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (1/1) ... [2024-11-28 04:01:22,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:01:22,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:22,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:01:22,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:01:22,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:01:22,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:01:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:01:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:01:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:01:22,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:01:22,681 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:01:22,684 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:01:22,947 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-28 04:01:22,947 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:01:22,960 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:01:22,960 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:01:22,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:01:22 BoogieIcfgContainer [2024-11-28 04:01:22,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:01:22,966 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:01:22,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:01:22,974 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:01:22,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:01:21" (1/3) ... [2024-11-28 04:01:22,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367074ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:01:22, skipping insertion in model container [2024-11-28 04:01:22,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:22" (2/3) ... [2024-11-28 04:01:22,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367074ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:01:22, skipping insertion in model container [2024-11-28 04:01:22,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:01:22" (3/3) ... [2024-11-28 04:01:22,981 INFO L128 eAbstractionObserver]: Analyzing ICFG array16_alloca_fixed.i [2024-11-28 04:01:23,005 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:01:23,007 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array16_alloca_fixed.i that has 1 procedures, 30 locations, 1 initial locations, 2 loop locations, and 9 error locations. [2024-11-28 04:01:23,072 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:01:23,095 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;@1d1222a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:01:23,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-28 04:01:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 20 states have (on average 1.85) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:23,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:01:23,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:23,114 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:01:23,115 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:01:23,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:23,123 INFO L85 PathProgramCache]: Analyzing trace with hash 889508768, now seen corresponding path program 1 times [2024-11-28 04:01:23,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:23,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454056141] [2024-11-28 04:01:23,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:23,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:23,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:23,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454056141] [2024-11-28 04:01:23,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454056141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:23,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:23,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:23,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577807366] [2024-11-28 04:01:23,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:23,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:23,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:23,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:23,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:23,480 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.85) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:23,592 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-11-28 04:01:23,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:23,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 04:01:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:23,612 INFO L225 Difference]: With dead ends: 30 [2024-11-28 04:01:23,612 INFO L226 Difference]: Without dead ends: 28 [2024-11-28 04:01:23,615 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 [2024-11-28 04:01:23,620 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:23,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 25 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:01:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-28 04:01:23,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-28 04:01:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:23,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-28 04:01:23,674 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2024-11-28 04:01:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:23,675 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-28 04:01:23,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:23,676 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-28 04:01:23,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:01:23,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:23,678 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:23,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:01:23,679 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:01:23,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:23,681 INFO L85 PathProgramCache]: Analyzing trace with hash 119447407, now seen corresponding path program 1 times [2024-11-28 04:01:23,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:23,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123601583] [2024-11-28 04:01:23,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:23,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:23,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:23,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123601583] [2024-11-28 04:01:23,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123601583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:23,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:23,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:01:23,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369979164] [2024-11-28 04:01:23,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:23,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:23,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:23,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:23,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:23,865 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:23,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:23,923 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-28 04:01:23,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:23,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 04:01:23,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:23,926 INFO L225 Difference]: With dead ends: 24 [2024-11-28 04:01:23,926 INFO L226 Difference]: Without dead ends: 24 [2024-11-28 04:01:23,926 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 [2024-11-28 04:01:23,928 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:23,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 20 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:01:23,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-28 04:01:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-28 04:01:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-28 04:01:23,939 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 8 [2024-11-28 04:01:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:23,939 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-28 04:01:23,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-28 04:01:23,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:01:23,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:23,940 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:23,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:01:23,942 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:01:23,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:23,945 INFO L85 PathProgramCache]: Analyzing trace with hash 119447408, now seen corresponding path program 1 times [2024-11-28 04:01:23,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:23,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911809502] [2024-11-28 04:01:23,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:23,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:24,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:24,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911809502] [2024-11-28 04:01:24,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911809502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:24,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:24,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:01:24,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28323429] [2024-11-28 04:01:24,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:24,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:01:24,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:24,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:01:24,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:01:24,487 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:24,819 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2024-11-28 04:01:24,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:01:24,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 04:01:24,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:24,822 INFO L225 Difference]: With dead ends: 50 [2024-11-28 04:01:24,822 INFO L226 Difference]: Without dead ends: 50 [2024-11-28 04:01:24,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:01:24,823 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 62 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:24,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 83 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:01:24,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-28 04:01:24,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 33. [2024-11-28 04:01:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-28 04:01:24,838 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 8 [2024-11-28 04:01:24,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:24,839 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-28 04:01:24,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:24,840 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-28 04:01:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:01:24,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:24,842 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:24,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:01:24,843 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:01:24,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:24,844 INFO L85 PathProgramCache]: Analyzing trace with hash 176705710, now seen corresponding path program 1 times [2024-11-28 04:01:24,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:24,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560727644] [2024-11-28 04:01:24,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:24,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:25,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:25,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560727644] [2024-11-28 04:01:25,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560727644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:25,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:25,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:01:25,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677178252] [2024-11-28 04:01:25,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:25,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:01:25,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:25,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:01:25,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:01:25,355 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:25,510 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-28 04:01:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:01:25,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 04:01:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:25,513 INFO L225 Difference]: With dead ends: 41 [2024-11-28 04:01:25,513 INFO L226 Difference]: Without dead ends: 41 [2024-11-28 04:01:25,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:01:25,518 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 80 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:25,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 31 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:01:25,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-28 04:01:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2024-11-28 04:01:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:25,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-28 04:01:25,529 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 8 [2024-11-28 04:01:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:25,529 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-28 04:01:25,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:25,530 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-28 04:01:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:01:25,530 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:25,530 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:25,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:01:25,532 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:01:25,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash -710585370, now seen corresponding path program 1 times [2024-11-28 04:01:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:25,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218692610] [2024-11-28 04:01:25,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:25,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:25,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:25,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218692610] [2024-11-28 04:01:25,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218692610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:25,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690329816] [2024-11-28 04:01:25,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:25,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:25,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:25,706 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:25,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:01:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:25,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:01:25,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:25,976 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:01:25,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690329816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:25,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:01:25,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 04:01:25,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835083152] [2024-11-28 04:01:25,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:25,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:01:25,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:25,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:01:25,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:01:25,979 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:26,057 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-11-28 04:01:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:01:26,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 04:01:26,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:26,058 INFO L225 Difference]: With dead ends: 47 [2024-11-28 04:01:26,061 INFO L226 Difference]: Without dead ends: 47 [2024-11-28 04:01:26,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:01:26,062 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:26,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 55 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:01:26,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-28 04:01:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2024-11-28 04:01:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 41 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) [2024-11-28 04:01:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-28 04:01:26,072 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 15 [2024-11-28 04:01:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:26,072 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-28 04:01:26,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:26,074 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-28 04:01:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:01:26,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:26,075 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:26,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:26,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:26,280 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:01:26,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:26,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1297391384, now seen corresponding path program 1 times [2024-11-28 04:01:26,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:26,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360726572] [2024-11-28 04:01:26,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:26,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:26,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:26,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:26,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360726572] [2024-11-28 04:01:26,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360726572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:26,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592926027] [2024-11-28 04:01:26,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:26,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:26,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:26,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:26,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:01:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:26,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:01:26,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:27,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-28 04:01:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:27,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:28,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592926027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:28,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:28,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-28 04:01:28,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893001890] [2024-11-28 04:01:28,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:28,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:01:28,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:28,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:01:28,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:01:28,218 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:28,625 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-11-28 04:01:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:01:28,626 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 04:01:28,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:28,627 INFO L225 Difference]: With dead ends: 40 [2024-11-28 04:01:28,627 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 04:01:28,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:01:28,628 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 76 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:28,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 78 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:01:28,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 04:01:28,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-11-28 04:01:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-28 04:01:28,640 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 15 [2024-11-28 04:01:28,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:28,641 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-28 04:01:28,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:28,644 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-28 04:01:28,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:01:28,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:28,644 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:28,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:28,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:28,845 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:01:28,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:28,846 INFO L85 PathProgramCache]: Analyzing trace with hash -553229426, now seen corresponding path program 1 times [2024-11-28 04:01:28,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:28,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015394334] [2024-11-28 04:01:28,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:28,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:29,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:29,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015394334] [2024-11-28 04:01:29,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015394334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:29,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907732200] [2024-11-28 04:01:29,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:29,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:29,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:29,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:29,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:01:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:29,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:01:29,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:29,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:29,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-28 04:01:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:29,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907732200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:29,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:29,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-28 04:01:29,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729268514] [2024-11-28 04:01:29,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:29,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:01:29,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:29,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:01:29,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:01:29,452 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:29,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:29,601 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2024-11-28 04:01:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:01:29,602 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 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 16 [2024-11-28 04:01:29,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:29,603 INFO L225 Difference]: With dead ends: 43 [2024-11-28 04:01:29,603 INFO L226 Difference]: Without dead ends: 43 [2024-11-28 04:01:29,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:01:29,604 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 50 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:29,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 47 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:01:29,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-28 04:01:29,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2024-11-28 04:01:29,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-11-28 04:01:29,616 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 16 [2024-11-28 04:01:29,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:29,616 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-11-28 04:01:29,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:29,617 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-11-28 04:01:29,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 04:01:29,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:29,617 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:29,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:01:29,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:29,824 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:01:29,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:29,825 INFO L85 PathProgramCache]: Analyzing trace with hash 29759279, now seen corresponding path program 1 times [2024-11-28 04:01:29,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:29,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712534914] [2024-11-28 04:01:29,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:29,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:01:29,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:29,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712534914] [2024-11-28 04:01:29,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712534914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:29,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:29,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:01:29,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910172834] [2024-11-28 04:01:29,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:29,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:01:29,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:29,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:01:29,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:01:29,915 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:29,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:29,961 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2024-11-28 04:01:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:01:29,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-28 04:01:29,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:29,963 INFO L225 Difference]: With dead ends: 36 [2024-11-28 04:01:29,963 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 04:01:29,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:01:29,964 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:29,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:29,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 04:01:29,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2024-11-28 04:01:29,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-11-28 04:01:29,973 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 17 [2024-11-28 04:01:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:29,974 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-11-28 04:01:29,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:29,974 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-11-28 04:01:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:01:29,977 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:29,977 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:29,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:01:29,977 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:01:29,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:29,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1468315498, now seen corresponding path program 1 times [2024-11-28 04:01:29,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:29,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553153682] [2024-11-28 04:01:29,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:29,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:01:30,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:30,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553153682] [2024-11-28 04:01:30,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553153682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:30,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251716920] [2024-11-28 04:01:30,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:30,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:30,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:30,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:30,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:01:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:30,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:01:30,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:01:30,406 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:01:30,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251716920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:30,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:01:30,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-28 04:01:30,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871495321] [2024-11-28 04:01:30,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:30,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:01:30,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:30,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:01:30,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:01:30,409 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:30,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:30,462 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-11-28 04:01:30,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:01:30,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-28 04:01:30,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:30,464 INFO L225 Difference]: With dead ends: 43 [2024-11-28 04:01:30,464 INFO L226 Difference]: Without dead ends: 43 [2024-11-28 04:01:30,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:01:30,465 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:30,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 45 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:30,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-28 04:01:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-11-28 04:01:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.25) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:30,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-28 04:01:30,469 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 19 [2024-11-28 04:01:30,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:30,469 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-28 04:01:30,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-28 04:01:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:01:30,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:30,470 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:30,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:01:30,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:30,675 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:01:30,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:30,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1468313576, now seen corresponding path program 1 times [2024-11-28 04:01:30,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:30,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152726445] [2024-11-28 04:01:30,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:30,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:01:30,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:30,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152726445] [2024-11-28 04:01:30,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152726445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:30,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670834880] [2024-11-28 04:01:30,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:30,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:30,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:30,740 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:30,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:01:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:30,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:01:30,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:01:30,830 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:01:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670834880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:30,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:01:30,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-28 04:01:30,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240587643] [2024-11-28 04:01:30,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:30,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:01:30,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:30,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:01:30,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:01:30,833 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:30,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:30,869 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-11-28 04:01:30,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:01:30,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-28 04:01:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:30,870 INFO L225 Difference]: With dead ends: 43 [2024-11-28 04:01:30,870 INFO L226 Difference]: Without dead ends: 43 [2024-11-28 04:01:30,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:01:30,871 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:30,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:30,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-28 04:01:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-11-28 04:01:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 40 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) [2024-11-28 04:01:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2024-11-28 04:01:30,878 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 19 [2024-11-28 04:01:30,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:30,879 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2024-11-28 04:01:30,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:30,879 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2024-11-28 04:01:30,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:01:30,880 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:30,880 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:30,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:01:31,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:31,081 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:01:31,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:31,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1238303896, now seen corresponding path program 1 times [2024-11-28 04:01:31,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:31,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582936679] [2024-11-28 04:01:31,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:31,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:01:31,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:31,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582936679] [2024-11-28 04:01:31,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582936679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:31,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88200585] [2024-11-28 04:01:31,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:31,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:31,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:31,322 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:31,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:01:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:31,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:01:31,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:31,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:31,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88200585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:31,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:31,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-28 04:01:31,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608171951] [2024-11-28 04:01:31,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:31,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:01:31,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:31,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:01:31,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:01:31,615 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:32,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:32,058 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2024-11-28 04:01:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:01:32,058 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 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 19 [2024-11-28 04:01:32,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:32,059 INFO L225 Difference]: With dead ends: 62 [2024-11-28 04:01:32,059 INFO L226 Difference]: Without dead ends: 62 [2024-11-28 04:01:32,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:01:32,061 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 60 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:32,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 83 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:01:32,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-28 04:01:32,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2024-11-28 04:01:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2024-11-28 04:01:32,066 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 19 [2024-11-28 04:01:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:32,067 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2024-11-28 04:01:32,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2024-11-28 04:01:32,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 04:01:32,067 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:32,068 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:32,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:01:32,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:32,268 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2024-11-28 04:01:32,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:32,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1726862119, now seen corresponding path program 1 times [2024-11-28 04:01:32,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:32,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758255003] [2024-11-28 04:01:32,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:32,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:01:32,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:32,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758255003] [2024-11-28 04:01:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758255003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:32,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:32,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:32,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805852032] [2024-11-28 04:01:32,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:32,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:01:32,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:32,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:01:32,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:01:32,434 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:32,460 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2024-11-28 04:01:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:01:32,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 04:01:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:32,461 INFO L225 Difference]: With dead ends: 47 [2024-11-28 04:01:32,461 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 04:01:32,461 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 [2024-11-28 04:01:32,462 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:32,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 32 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:32,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 04:01:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 04:01:32,463 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) [2024-11-28 04:01:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 04:01:32,463 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2024-11-28 04:01:32,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:32,463 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:01:32,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 04:01:32,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 04:01:32,468 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2024-11-28 04:01:32,468 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2024-11-28 04:01:32,469 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2024-11-28 04:01:32,469 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2024-11-28 04:01:32,469 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2024-11-28 04:01:32,469 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2024-11-28 04:01:32,470 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2024-11-28 04:01:32,470 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2024-11-28 04:01:32,470 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-28 04:01:32,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:01:32,474 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:32,478 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:01:32,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:01:32 BoogieIcfgContainer [2024-11-28 04:01:32,483 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:01:32,483 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:01:32,484 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:01:32,484 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:01:32,485 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:01:22" (3/4) ... [2024-11-28 04:01:32,488 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:01:32,500 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 04:01:32,500 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 04:01:32,501 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 04:01:32,501 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 04:01:32,631 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:01:32,632 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:01:32,632 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:01:32,634 INFO L158 Benchmark]: Toolchain (without parser) took 10927.60ms. Allocated memory is still 167.8MB. Free memory was 129.1MB in the beginning and 129.2MB in the end (delta: -129.7kB). Peak memory consumption was 90.1MB. Max. memory is 16.1GB. [2024-11-28 04:01:32,634 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 105.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:01:32,634 INFO L158 Benchmark]: CACSL2BoogieTranslator took 625.28ms. Allocated memory is still 167.8MB. Free memory was 129.1MB in the beginning and 111.1MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:01:32,635 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.82ms. Allocated memory is still 167.8MB. Free memory was 110.8MB in the beginning and 109.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:01:32,635 INFO L158 Benchmark]: Boogie Preprocessor took 82.00ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 107.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:01:32,636 INFO L158 Benchmark]: RCFGBuilder took 478.49ms. Allocated memory is still 167.8MB. Free memory was 107.9MB in the beginning and 94.7MB in the end (delta: 13.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:01:32,636 INFO L158 Benchmark]: TraceAbstraction took 9516.53ms. Allocated memory is still 167.8MB. Free memory was 94.1MB in the beginning and 42.5MB in the end (delta: 51.5MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. [2024-11-28 04:01:32,636 INFO L158 Benchmark]: Witness Printer took 149.12ms. Allocated memory is still 167.8MB. Free memory was 42.5MB in the beginning and 129.2MB in the end (delta: -86.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:01:32,638 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 105.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 625.28ms. Allocated memory is still 167.8MB. Free memory was 129.1MB in the beginning and 111.1MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.82ms. Allocated memory is still 167.8MB. Free memory was 110.8MB in the beginning and 109.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 82.00ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 107.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 478.49ms. Allocated memory is still 167.8MB. Free memory was 107.9MB in the beginning and 94.7MB in the end (delta: 13.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9516.53ms. Allocated memory is still 167.8MB. Free memory was 94.1MB in the beginning and 42.5MB in the end (delta: 51.5MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. * Witness Printer took 149.12ms. Allocated memory is still 167.8MB. Free memory was 42.5MB in the beginning and 129.2MB in the end (delta: -86.7MB). 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: 364]: 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 1 procedures, 30 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 9.4s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 389 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 389 mSDsluCounter, 586 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 383 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 630 IncrementalHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 203 mSDtfsCounter, 630 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=11, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 65 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 302 ConstructedInterpolants, 0 QuantifiedInterpolants, 2394 SizeOfPredicates, 12 NumberOfNonLiveVariables, 375 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 24/42 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 04:01:32,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9818cbf-6abe-42bb-ac61-a6d73cf7e5d5/bin/uautomizer-verify-aQ6SnzHsRB/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