./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd76b7822e4f01d656aa547f942373edd42b5cbb2c90dd9f0d7299ee64d98734 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:25:34,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:25:34,975 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 18:25:34,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:25:34,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:25:35,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:25:35,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:25:35,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:25:35,020 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:25:35,020 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:25:35,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:25:35,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:25:35,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:25:35,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:25:35,028 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:25:35,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:25:35,029 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:25:35,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:25:35,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:25:35,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:25:35,031 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 18:25:35,036 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 18:25:35,037 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 18:25:35,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:25:35,037 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 18:25:35,038 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:25:35,038 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:25:35,039 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:25:35,039 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:25:35,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:25:35,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:25:35,044 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:25:35,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:25:35,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:25:35,045 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:25:35,045 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:25:35,045 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:25:35,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:25:35,046 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:25:35,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:25:35,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:25:35,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:25:35,049 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd76b7822e4f01d656aa547f942373edd42b5cbb2c90dd9f0d7299ee64d98734 [2024-11-08 18:25:35,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:25:35,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:25:35,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:25:35,420 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:25:35,421 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:25:35,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i Unable to find full path for "g++" [2024-11-08 18:25:37,895 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:25:38,231 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:25:38,232 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i [2024-11-08 18:25:38,248 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/data/1c93600de/1119fb3e05dd40b3a6a36c4aca3492e5/FLAG6945608ba [2024-11-08 18:25:38,268 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/data/1c93600de/1119fb3e05dd40b3a6a36c4aca3492e5 [2024-11-08 18:25:38,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:25:38,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:25:38,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:25:38,279 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:25:38,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:25:38,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:38,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26db8440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38, skipping insertion in model container [2024-11-08 18:25:38,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:38,348 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:25:38,829 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 18:25:38,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:25:38,852 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:25:38,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:25:38,968 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:25:38,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38 WrapperNode [2024-11-08 18:25:38,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:25:38,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:25:38,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:25:38,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:25:38,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:39,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:39,028 INFO L138 Inliner]: procedures = 117, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2024-11-08 18:25:39,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:25:39,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:25:39,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:25:39,030 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:25:39,043 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:39,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:39,046 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:39,063 INFO L175 MemorySlicer]: Split 3 memory accesses to 1 slices as follows [3]. 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]. [2024-11-08 18:25:39,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:39,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:39,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:39,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:39,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:39,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:39,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:25:39,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:25:39,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:25:39,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:25:39,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (1/1) ... [2024-11-08 18:25:39,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:25:39,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:39,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:25:39,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:25:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:25:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:25:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 18:25:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 18:25:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:25:39,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:25:39,382 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:25:39,385 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:25:39,627 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-08 18:25:39,628 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:25:39,645 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:25:39,646 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 18:25:39,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:25:39 BoogieIcfgContainer [2024-11-08 18:25:39,647 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:25:39,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:25:39,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:25:39,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:25:39,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:25:38" (1/3) ... [2024-11-08 18:25:39,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426b0f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:25:39, skipping insertion in model container [2024-11-08 18:25:39,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:38" (2/3) ... [2024-11-08 18:25:39,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426b0f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:25:39, skipping insertion in model container [2024-11-08 18:25:39,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:25:39" (3/3) ... [2024-11-08 18:25:39,664 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrlen-alloca-1.i [2024-11-08 18:25:39,687 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:25:39,687 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-08 18:25:39,742 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:25:39,749 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;@67b83ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:25:39,749 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-08 18:25:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 18:25:39,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:39,767 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:39,768 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:39,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:39,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1804978259, now seen corresponding path program 1 times [2024-11-08 18:25:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:39,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485593158] [2024-11-08 18:25:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:39,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:40,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:40,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485593158] [2024-11-08 18:25:40,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485593158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:40,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:40,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:25:40,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999954005] [2024-11-08 18:25:40,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:40,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:25:40,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:40,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:25:40,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:25:40,553 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:40,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:40,712 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2024-11-08 18:25:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:25:40,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-08 18:25:40,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:40,727 INFO L225 Difference]: With dead ends: 31 [2024-11-08 18:25:40,727 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 18:25:40,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:25:40,738 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:40,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 37 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 18:25:40,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2024-11-08 18:25:40,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-08 18:25:40,785 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 7 [2024-11-08 18:25:40,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:40,787 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-08 18:25:40,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-08 18:25:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 18:25:40,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:40,789 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:40,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:25:40,790 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:40,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:40,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1804978260, now seen corresponding path program 1 times [2024-11-08 18:25:40,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023105977] [2024-11-08 18:25:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:41,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:41,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023105977] [2024-11-08 18:25:41,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023105977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:41,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:41,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:25:41,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199278895] [2024-11-08 18:25:41,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:41,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:25:41,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:41,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:25:41,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:25:41,092 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:41,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:41,153 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2024-11-08 18:25:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:25:41,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-08 18:25:41,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:41,155 INFO L225 Difference]: With dead ends: 29 [2024-11-08 18:25:41,155 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 18:25:41,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:25:41,158 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:41,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:41,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 18:25:41,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-08 18:25:41,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-08 18:25:41,166 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 7 [2024-11-08 18:25:41,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:41,167 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-08 18:25:41,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-08 18:25:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 18:25:41,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:41,169 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:41,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:25:41,170 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:41,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:41,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1804967433, now seen corresponding path program 1 times [2024-11-08 18:25:41,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:41,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635420417] [2024-11-08 18:25:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:41,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:41,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:41,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635420417] [2024-11-08 18:25:41,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635420417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:41,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:41,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:25:41,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971221058] [2024-11-08 18:25:41,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:41,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:25:41,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:25:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:25:41,294 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:41,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:41,349 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-08 18:25:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:25:41,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-08 18:25:41,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:41,352 INFO L225 Difference]: With dead ends: 25 [2024-11-08 18:25:41,352 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 18:25:41,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:25:41,354 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:41,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:41,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 18:25:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-08 18:25:41,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:41,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-08 18:25:41,365 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 7 [2024-11-08 18:25:41,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:41,366 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-08 18:25:41,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-08 18:25:41,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 18:25:41,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:41,367 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:41,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:25:41,369 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:41,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:41,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1806825302, now seen corresponding path program 1 times [2024-11-08 18:25:41,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:41,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018076254] [2024-11-08 18:25:41,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:41,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:41,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:41,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018076254] [2024-11-08 18:25:41,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018076254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:41,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:41,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:25:41,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43420980] [2024-11-08 18:25:41,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:41,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:25:41,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:41,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:25:41,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:25:41,642 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:41,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:41,729 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2024-11-08 18:25:41,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:25:41,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-08 18:25:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:41,731 INFO L225 Difference]: With dead ends: 31 [2024-11-08 18:25:41,731 INFO L226 Difference]: Without dead ends: 31 [2024-11-08 18:25:41,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:25:41,733 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:41,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:41,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-08 18:25:41,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2024-11-08 18:25:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 26 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) [2024-11-08 18:25:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-08 18:25:41,738 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 7 [2024-11-08 18:25:41,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:41,738 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-08 18:25:41,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:41,738 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-08 18:25:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 18:25:41,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:41,739 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:41,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:25:41,740 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:41,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:41,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1806814475, now seen corresponding path program 1 times [2024-11-08 18:25:41,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:41,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589344601] [2024-11-08 18:25:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:41,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:42,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:42,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589344601] [2024-11-08 18:25:42,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589344601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:42,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:42,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:25:42,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798502011] [2024-11-08 18:25:42,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:42,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:25:42,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:42,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:25:42,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:25:42,033 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:42,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:42,132 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-11-08 18:25:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:25:42,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-08 18:25:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:42,134 INFO L225 Difference]: With dead ends: 29 [2024-11-08 18:25:42,134 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 18:25:42,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:25:42,136 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:42,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 37 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 18:25:42,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-08 18:25:42,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.391304347826087) 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) [2024-11-08 18:25:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-08 18:25:42,142 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 7 [2024-11-08 18:25:42,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:42,143 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-08 18:25:42,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:42,143 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-08 18:25:42,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 18:25:42,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:42,144 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:42,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:25:42,145 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:42,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:42,162 INFO L85 PathProgramCache]: Analyzing trace with hash -582680681, now seen corresponding path program 1 times [2024-11-08 18:25:42,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:42,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886837489] [2024-11-08 18:25:42,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:42,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:42,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:42,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:42,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886837489] [2024-11-08 18:25:42,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886837489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:42,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:42,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:25:42,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76191821] [2024-11-08 18:25:42,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:42,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:25:42,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:42,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:25:42,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:25:42,239 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:42,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:42,284 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-11-08 18:25:42,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:25:42,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 18:25:42,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:42,288 INFO L225 Difference]: With dead ends: 27 [2024-11-08 18:25:42,288 INFO L226 Difference]: Without dead ends: 27 [2024-11-08 18:25:42,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:25:42,290 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:42,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:42,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-08 18:25:42,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-08 18:25:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-11-08 18:25:42,303 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 9 [2024-11-08 18:25:42,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:42,303 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-11-08 18:25:42,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-11-08 18:25:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 18:25:42,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:42,304 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:42,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:25:42,305 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:42,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash -582680680, now seen corresponding path program 1 times [2024-11-08 18:25:42,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:42,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932412911] [2024-11-08 18:25:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:42,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:42,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:42,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932412911] [2024-11-08 18:25:42,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932412911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:42,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:42,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:25:42,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116478930] [2024-11-08 18:25:42,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:42,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:25:42,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:42,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:25:42,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:25:42,474 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:42,594 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-11-08 18:25:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:25:42,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 18:25:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:42,596 INFO L225 Difference]: With dead ends: 30 [2024-11-08 18:25:42,596 INFO L226 Difference]: Without dead ends: 30 [2024-11-08 18:25:42,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:25:42,597 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:42,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 37 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-08 18:25:42,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-08 18:25:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.3333333333333333) 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) [2024-11-08 18:25:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-08 18:25:42,609 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2024-11-08 18:25:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:42,609 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-08 18:25:42,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-08 18:25:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 18:25:42,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:42,610 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:42,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:25:42,611 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:42,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:42,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1610385615, now seen corresponding path program 1 times [2024-11-08 18:25:42,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:42,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328418315] [2024-11-08 18:25:42,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:42,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:42,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:42,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328418315] [2024-11-08 18:25:42,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328418315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:42,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:42,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:25:42,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972510792] [2024-11-08 18:25:42,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:42,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:25:42,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:42,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:25:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:25:42,914 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:43,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:43,019 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2024-11-08 18:25:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:25:43,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-08 18:25:43,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:43,021 INFO L225 Difference]: With dead ends: 34 [2024-11-08 18:25:43,021 INFO L226 Difference]: Without dead ends: 34 [2024-11-08 18:25:43,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:25:43,022 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:43,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 71 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-08 18:25:43,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-11-08 18:25:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-08 18:25:43,030 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 11 [2024-11-08 18:25:43,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:43,033 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-08 18:25:43,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-08 18:25:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 18:25:43,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:43,038 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:43,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:25:43,039 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:43,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:43,039 INFO L85 PathProgramCache]: Analyzing trace with hash -930327245, now seen corresponding path program 1 times [2024-11-08 18:25:43,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:43,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059504047] [2024-11-08 18:25:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:43,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:43,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:43,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059504047] [2024-11-08 18:25:43,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059504047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:43,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:43,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:25:43,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183312826] [2024-11-08 18:25:43,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:43,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:25:43,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:25:43,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:25:43,307 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:43,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:43,439 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-11-08 18:25:43,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:25:43,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-08 18:25:43,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:43,441 INFO L225 Difference]: With dead ends: 38 [2024-11-08 18:25:43,441 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 18:25:43,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:25:43,443 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:43,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 40 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 18:25:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2024-11-08 18:25:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:43,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-08 18:25:43,447 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 11 [2024-11-08 18:25:43,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:43,462 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-08 18:25:43,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:43,465 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-08 18:25:43,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 18:25:43,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:43,469 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:43,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:25:43,470 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:43,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:43,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1955364366, now seen corresponding path program 1 times [2024-11-08 18:25:43,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:43,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232367411] [2024-11-08 18:25:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:43,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:43,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:43,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232367411] [2024-11-08 18:25:43,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232367411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:43,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:43,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:25:43,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920553222] [2024-11-08 18:25:43,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:43,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:25:43,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:43,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:25:43,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:25:43,842 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:43,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:43,893 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-11-08 18:25:43,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:25:43,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-08 18:25:43,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:43,895 INFO L225 Difference]: With dead ends: 30 [2024-11-08 18:25:43,895 INFO L226 Difference]: Without dead ends: 30 [2024-11-08 18:25:43,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:25:43,896 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:43,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 28 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-08 18:25:43,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-08 18:25:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-08 18:25:43,905 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2024-11-08 18:25:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:43,905 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-08 18:25:43,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-08 18:25:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 18:25:43,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:43,910 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:43,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:25:43,910 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:43,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:43,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1955353539, now seen corresponding path program 1 times [2024-11-08 18:25:43,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:43,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640378671] [2024-11-08 18:25:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:43,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:44,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:44,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640378671] [2024-11-08 18:25:44,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640378671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:25:44,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666659185] [2024-11-08 18:25:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:44,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:44,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:44,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:25:44,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:25:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:44,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 18:25:44,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:25:44,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-08 18:25:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:44,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:25:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:45,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666659185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:25:45,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:25:45,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-08 18:25:45,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105803908] [2024-11-08 18:25:45,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:25:45,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:25:45,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:45,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:25:45,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:25:45,218 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 17 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:45,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:45,502 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-11-08 18:25:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:25:45,503 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 18:25:45,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:45,504 INFO L225 Difference]: With dead ends: 31 [2024-11-08 18:25:45,504 INFO L226 Difference]: Without dead ends: 31 [2024-11-08 18:25:45,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:25:45,505 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:45,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 62 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:45,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-08 18:25:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2024-11-08 18:25:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-08 18:25:45,509 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 11 [2024-11-08 18:25:45,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:45,510 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-08 18:25:45,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:45,510 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-08 18:25:45,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 18:25:45,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:45,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:45,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:25:45,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 18:25:45,716 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:45,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:45,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1392398882, now seen corresponding path program 1 times [2024-11-08 18:25:45,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:45,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505514617] [2024-11-08 18:25:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:45,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:45,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505514617] [2024-11-08 18:25:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505514617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:45,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:45,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:25:45,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315639084] [2024-11-08 18:25:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:45,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:25:45,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:45,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:25:45,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:25:45,815 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:45,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:45,838 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-11-08 18:25:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:25:45,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-08 18:25:45,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:45,839 INFO L225 Difference]: With dead ends: 26 [2024-11-08 18:25:45,839 INFO L226 Difference]: Without dead ends: 16 [2024-11-08 18:25:45,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:25:45,841 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:45,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-08 18:25:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-08 18:25:45,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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) [2024-11-08 18:25:45,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-11-08 18:25:45,844 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2024-11-08 18:25:45,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:45,844 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-11-08 18:25:45,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:45,845 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-11-08 18:25:45,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 18:25:45,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:45,846 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:45,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:25:45,846 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:45,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1054130155, now seen corresponding path program 1 times [2024-11-08 18:25:45,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:45,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807964564] [2024-11-08 18:25:45,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:45,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:46,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:46,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807964564] [2024-11-08 18:25:46,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807964564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:25:46,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009196878] [2024-11-08 18:25:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:46,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:46,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:46,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:25:46,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:25:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:46,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 18:25:46,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:25:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:46,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:25:46,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-08 18:25:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:46,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009196878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:25:46,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:25:46,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-08 18:25:46,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464588170] [2024-11-08 18:25:46,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:25:46,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:25:46,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:46,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:25:46,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:25:46,685 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 17 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:46,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:46,848 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-08 18:25:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:25:46,849 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-08 18:25:46,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:46,850 INFO L225 Difference]: With dead ends: 22 [2024-11-08 18:25:46,850 INFO L226 Difference]: Without dead ends: 22 [2024-11-08 18:25:46,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:25:46,851 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:46,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 31 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:46,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-08 18:25:46,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2024-11-08 18:25:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 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) [2024-11-08 18:25:46,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-08 18:25:46,854 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2024-11-08 18:25:46,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:46,855 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-08 18:25:46,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:46,855 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-08 18:25:46,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 18:25:46,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:46,856 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:46,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:25:47,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 18:25:47,058 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:47,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash -593203516, now seen corresponding path program 2 times [2024-11-08 18:25:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:47,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893120085] [2024-11-08 18:25:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:47,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:47,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:47,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893120085] [2024-11-08 18:25:47,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893120085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:25:47,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549012790] [2024-11-08 18:25:47,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:25:47,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:47,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:47,442 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:25:47,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:25:47,529 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:25:47,529 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:25:47,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 18:25:47,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:25:47,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 18:25:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:47,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:25:47,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 18:25:47,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 18:25:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:47,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549012790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:25:47,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:25:47,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-08 18:25:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119256612] [2024-11-08 18:25:47,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:25:47,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:25:47,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:25:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:25:47,878 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:48,062 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2024-11-08 18:25:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:25:48,063 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2024-11-08 18:25:48,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:48,063 INFO L225 Difference]: With dead ends: 32 [2024-11-08 18:25:48,063 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 18:25:48,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:25:48,065 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:48,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 18:25:48,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-08 18:25:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-11-08 18:25:48,071 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2024-11-08 18:25:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:48,072 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-11-08 18:25:48,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-11-08 18:25:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 18:25:48,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:48,073 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:48,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:25:48,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 18:25:48,274 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:48,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:48,275 INFO L85 PathProgramCache]: Analyzing trace with hash -688918660, now seen corresponding path program 3 times [2024-11-08 18:25:48,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:48,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335318749] [2024-11-08 18:25:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:48,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:48,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:48,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335318749] [2024-11-08 18:25:48,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335318749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:25:48,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3169555] [2024-11-08 18:25:48,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:25:48,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:48,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:48,585 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:25:48,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:25:48,682 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 18:25:48,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:25:48,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 18:25:48,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:25:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:48,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:25:49,065 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 21 treesize of output 17 [2024-11-08 18:25:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:49,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3169555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:25:49,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:25:49,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-08 18:25:49,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686175419] [2024-11-08 18:25:49,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:25:49,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 18:25:49,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:49,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 18:25:49,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:25:49,232 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:49,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:49,426 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-08 18:25:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:25:49,427 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 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 21 [2024-11-08 18:25:49,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:49,428 INFO L225 Difference]: With dead ends: 25 [2024-11-08 18:25:49,428 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 18:25:49,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:25:49,431 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:49,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 32 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:25:49,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 18:25:49,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-08 18:25:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:49,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-08 18:25:49,434 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 21 [2024-11-08 18:25:49,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:49,436 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-08 18:25:49,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-08 18:25:49,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 18:25:49,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:49,438 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:49,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:25:49,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 18:25:49,639 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-08 18:25:49,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:49,640 INFO L85 PathProgramCache]: Analyzing trace with hash -625869291, now seen corresponding path program 4 times [2024-11-08 18:25:49,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:49,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984482244] [2024-11-08 18:25:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:49,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:50,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:50,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984482244] [2024-11-08 18:25:50,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984482244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:25:50,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546203175] [2024-11-08 18:25:50,078 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:25:50,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:50,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:50,081 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:25:50,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:25:50,192 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:25:50,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:25:50,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 18:25:50,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:25:50,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-08 18:25:51,009 INFO L349 Elim1Store]: treesize reduction 8, result has 76.5 percent of original size [2024-11-08 18:25:51,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2024-11-08 18:25:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:25:51,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:25:51,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-08 18:25:51,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2024-11-08 18:25:51,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-08 18:25:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:25:51,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546203175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:25:51,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:25:51,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 29 [2024-11-08 18:25:51,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254437021] [2024-11-08 18:25:51,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:25:51,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 18:25:51,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:51,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 18:25:51,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2024-11-08 18:25:51,901 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:53,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:53,246 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-11-08 18:25:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 18:25:53,247 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 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 23 [2024-11-08 18:25:53,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:53,247 INFO L225 Difference]: With dead ends: 40 [2024-11-08 18:25:53,247 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 18:25:53,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=246, Invalid=1476, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 18:25:53,249 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:53,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:25:53,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 18:25:53,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 18:25:53,251 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) [2024-11-08 18:25:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 18:25:53,251 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2024-11-08 18:25:53,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:53,251 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 18:25:53,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 18:25:53,252 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 18:25:53,255 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2024-11-08 18:25:53,256 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-08 18:25:53,256 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-08 18:25:53,257 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-08 18:25:53,257 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-08 18:25:53,257 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-08 18:25:53,257 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-08 18:25:53,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:25:53,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 18:25:53,466 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:53,469 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 18:25:53,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 06:25:53 BoogieIcfgContainer [2024-11-08 18:25:53,473 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 18:25:53,473 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 18:25:53,473 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 18:25:53,474 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 18:25:53,474 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:25:39" (3/4) ... [2024-11-08 18:25:53,477 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 18:25:53,487 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-08 18:25:53,487 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-08 18:25:53,487 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-08 18:25:53,487 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 18:25:53,599 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 18:25:53,600 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/witness.yml [2024-11-08 18:25:53,600 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 18:25:53,601 INFO L158 Benchmark]: Toolchain (without parser) took 15324.55ms. Allocated memory was 127.9MB in the beginning and 249.6MB in the end (delta: 121.6MB). Free memory was 96.0MB in the beginning and 168.7MB in the end (delta: -72.7MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2024-11-08 18:25:53,603 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:25:53,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 691.36ms. Allocated memory is still 127.9MB. Free memory was 96.0MB in the beginning and 77.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 18:25:53,603 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.61ms. Allocated memory is still 127.9MB. Free memory was 77.1MB in the beginning and 75.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:25:53,604 INFO L158 Benchmark]: Boogie Preprocessor took 50.51ms. Allocated memory is still 127.9MB. Free memory was 75.0MB in the beginning and 73.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:25:53,604 INFO L158 Benchmark]: RCFGBuilder took 566.24ms. Allocated memory is still 127.9MB. Free memory was 73.4MB in the beginning and 61.0MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 18:25:53,605 INFO L158 Benchmark]: TraceAbstraction took 13820.86ms. Allocated memory was 127.9MB in the beginning and 249.6MB in the end (delta: 121.6MB). Free memory was 60.3MB in the beginning and 173.5MB in the end (delta: -113.2MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2024-11-08 18:25:53,605 INFO L158 Benchmark]: Witness Printer took 126.95ms. Allocated memory is still 249.6MB. Free memory was 173.5MB in the beginning and 168.7MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 18:25:53,607 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 691.36ms. Allocated memory is still 127.9MB. Free memory was 96.0MB in the beginning and 77.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.61ms. Allocated memory is still 127.9MB. Free memory was 77.1MB in the beginning and 75.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.51ms. Allocated memory is still 127.9MB. Free memory was 75.0MB in the beginning and 73.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 566.24ms. Allocated memory is still 127.9MB. Free memory was 73.4MB in the beginning and 61.0MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 13820.86ms. Allocated memory was 127.9MB in the beginning and 249.6MB in the end (delta: 121.6MB). Free memory was 60.3MB in the beginning and 173.5MB in the end (delta: -113.2MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Witness Printer took 126.95ms. Allocated memory is still 249.6MB. Free memory was 173.5MB in the beginning and 168.7MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. 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: 522]: 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, 25 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 13.7s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 171 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 171 mSDsluCounter, 653 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 462 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1321 IncrementalHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 191 mSDtfsCounter, 1321 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 286 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=8, InterpolantAutomatonStates: 123, 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, 16 MinimizatonAttempts, 36 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 273 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 334 ConstructedInterpolants, 7 QuantifiedInterpolants, 2828 SizeOfPredicates, 27 NumberOfNonLiveVariables, 391 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 26 InterpolantComputations, 11 PerfectInterpolantSequences, 33/108 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 - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-08 18:25:53,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c983fcfa-ae04-4fad-9bb7-6d7df0216b3d/bin/uautomizer-verify-jihMAELWvX/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