./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:45:52,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:45:52,297 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:45:52,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:45:52,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:45:52,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:45:52,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:45:52,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:45:52,332 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:45:52,332 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:45:52,333 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:45:52,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:45:52,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:45:52,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:45:52,336 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:45:52,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:45:52,337 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:45:52,337 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:45:52,338 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:45:52,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:45:52,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:45:52,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:45:52,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:45:52,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:45:52,342 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:45:52,342 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:45:52,343 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:45:52,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:45:52,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:45:52,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:45:52,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:45:52,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:52,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:45:52,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:45:52,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:45:52,348 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:45:52,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:45:52,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:45:52,350 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:45:52,350 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:45:52,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:45:52,351 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:45:52,351 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_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2023-11-26 10:45:52,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:45:52,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:45:52,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:45:52,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:45:52,741 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:45:52,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2023-11-26 10:45:56,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:45:56,368 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:45:56,373 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2023-11-26 10:45:56,399 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/data/91b87ad30/e1bdd33aedd44411b02a41b4b9331599/FLAG795e5e57c [2023-11-26 10:45:56,418 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/data/91b87ad30/e1bdd33aedd44411b02a41b4b9331599 [2023-11-26 10:45:56,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:45:56,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:45:56,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:56,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:45:56,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:45:56,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:56" (1/1) ... [2023-11-26 10:45:56,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ccb273d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:56, skipping insertion in model container [2023-11-26 10:45:56,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:56" (1/1) ... [2023-11-26 10:45:56,520 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:45:56,890 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2023-11-26 10:45:56,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:56,956 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:45:56,996 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2023-11-26 10:45:57,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:57,072 WARN L675 CHandler]: The function insert_fnc is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:45:57,079 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:45:57,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57 WrapperNode [2023-11-26 10:45:57,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:57,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:57,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:45:57,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:45:57,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (1/1) ... [2023-11-26 10:45:57,113 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (1/1) ... [2023-11-26 10:45:57,166 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 230 [2023-11-26 10:45:57,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:57,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:45:57,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:45:57,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:45:57,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (1/1) ... [2023-11-26 10:45:57,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (1/1) ... [2023-11-26 10:45:57,195 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (1/1) ... [2023-11-26 10:45:57,261 INFO L175 MemorySlicer]: Split 48 memory accesses to 3 slices as follows [2, 6, 40]. 83 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 13 writes are split as follows [0, 2, 11]. [2023-11-26 10:45:57,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (1/1) ... [2023-11-26 10:45:57,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (1/1) ... [2023-11-26 10:45:57,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (1/1) ... [2023-11-26 10:45:57,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (1/1) ... [2023-11-26 10:45:57,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (1/1) ... [2023-11-26 10:45:57,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (1/1) ... [2023-11-26 10:45:57,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:45:57,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:45:57,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:45:57,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:45:57,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (1/1) ... [2023-11-26 10:45:57,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:57,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:57,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:45:57,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:45:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-11-26 10:45:57,417 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-11-26 10:45:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2023-11-26 10:45:57,417 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2023-11-26 10:45:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:45:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:45:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2023-11-26 10:45:57,419 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2023-11-26 10:45:57,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:45:57,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 10:45:57,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 10:45:57,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 10:45:57,421 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-26 10:45:57,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-26 10:45:57,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 10:45:57,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 10:45:57,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 10:45:57,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:45:57,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 10:45:57,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 10:45:57,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 10:45:57,423 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2023-11-26 10:45:57,423 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2023-11-26 10:45:57,423 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2023-11-26 10:45:57,424 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2023-11-26 10:45:57,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:45:57,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:45:57,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:45:57,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:45:57,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:45:57,649 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:45:57,652 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:45:58,162 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:45:58,196 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:45:58,196 INFO L309 CfgBuilder]: Removed 38 assume(true) statements. [2023-11-26 10:45:58,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:58 BoogieIcfgContainer [2023-11-26 10:45:58,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:45:58,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:45:58,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:45:58,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:45:58,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:45:56" (1/3) ... [2023-11-26 10:45:58,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eed1cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:58, skipping insertion in model container [2023-11-26 10:45:58,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:57" (2/3) ... [2023-11-26 10:45:58,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eed1cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:58, skipping insertion in model container [2023-11-26 10:45:58,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:58" (3/3) ... [2023-11-26 10:45:58,207 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2023-11-26 10:45:58,227 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:45:58,228 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:45:58,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:45:58,293 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1d8246ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:45:58,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:45:58,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 85 states have (on average 1.8) internal successors, (153), 105 states have internal predecessors, (153), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-26 10:45:58,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 10:45:58,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:58,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:58,310 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:58,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:58,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1364741834, now seen corresponding path program 1 times [2023-11-26 10:45:58,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:58,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231849914] [2023-11-26 10:45:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:58,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:58,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:58,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:45:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 10:45:58,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:58,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231849914] [2023-11-26 10:45:58,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231849914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:58,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:58,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:58,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720978692] [2023-11-26 10:45:58,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:58,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:58,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:58,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:58,825 INFO L87 Difference]: Start difference. First operand has 117 states, 85 states have (on average 1.8) internal successors, (153), 105 states have internal predecessors, (153), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:45:59,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:59,083 INFO L93 Difference]: Finished difference Result 231 states and 409 transitions. [2023-11-26 10:45:59,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:59,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-11-26 10:45:59,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:59,096 INFO L225 Difference]: With dead ends: 231 [2023-11-26 10:45:59,096 INFO L226 Difference]: Without dead ends: 112 [2023-11-26 10:45:59,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:59,105 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 38 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:59,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 149 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:45:59,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-26 10:45:59,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-26 10:45:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 100 states have internal predecessors, (107), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 10:45:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 141 transitions. [2023-11-26 10:45:59,163 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 141 transitions. Word has length 30 [2023-11-26 10:45:59,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:59,164 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 141 transitions. [2023-11-26 10:45:59,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:45:59,164 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 141 transitions. [2023-11-26 10:45:59,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-26 10:45:59,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:59,167 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:59,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:45:59,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:59,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash 208543916, now seen corresponding path program 1 times [2023-11-26 10:45:59,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:59,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58770180] [2023-11-26 10:45:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:59,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:00,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:46:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:46:00,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:00,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58770180] [2023-11-26 10:46:00,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58770180] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:00,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033813325] [2023-11-26 10:46:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:00,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:00,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:00,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:00,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:46:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:00,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 10:46:00,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:46:00,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:46:01,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033813325] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:46:01,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:46:01,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2023-11-26 10:46:01,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65948116] [2023-11-26 10:46:01,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:01,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:46:01,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:46:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:46:01,011 INFO L87 Difference]: Start difference. First operand 112 states and 141 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 10:46:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:01,461 INFO L93 Difference]: Finished difference Result 234 states and 308 transitions. [2023-11-26 10:46:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:46:01,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2023-11-26 10:46:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:01,464 INFO L225 Difference]: With dead ends: 234 [2023-11-26 10:46:01,464 INFO L226 Difference]: Without dead ends: 124 [2023-11-26 10:46:01,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:46:01,468 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 55 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:01,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 294 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:46:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-26 10:46:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-11-26 10:46:01,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 107 states have internal predecessors, (115), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 10:46:01,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 155 transitions. [2023-11-26 10:46:01,490 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 155 transitions. Word has length 31 [2023-11-26 10:46:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:01,491 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 155 transitions. [2023-11-26 10:46:01,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 10:46:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 155 transitions. [2023-11-26 10:46:01,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-26 10:46:01,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:01,495 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:01,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:01,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:01,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:01,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:01,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1337816308, now seen corresponding path program 1 times [2023-11-26 10:46:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:01,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79506031] [2023-11-26 10:46:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:01,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:02,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 10:46:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:04,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-26 10:46:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:05,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:05,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:46:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:05,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 10:46:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:05,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 10:46:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-26 10:46:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:05,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:05,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:46:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 12 proven. 56 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-26 10:46:05,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:05,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79506031] [2023-11-26 10:46:05,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79506031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:05,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915474373] [2023-11-26 10:46:05,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:05,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:05,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:05,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:05,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:46:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:06,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-26 10:46:06,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:06,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 10:46:06,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-26 10:46:06,635 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 29 proven. 5 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-26 10:46:06,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:07,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-26 10:46:07,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-26 10:46:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-26 10:46:07,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915474373] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:46:07,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:46:07,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 23 [2023-11-26 10:46:07,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218609328] [2023-11-26 10:46:07,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:07,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 10:46:07,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:07,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 10:46:07,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2023-11-26 10:46:07,313 INFO L87 Difference]: Start difference. First operand 124 states and 155 transitions. Second operand has 23 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 8 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2023-11-26 10:46:09,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:09,020 INFO L93 Difference]: Finished difference Result 317 states and 407 transitions. [2023-11-26 10:46:09,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-26 10:46:09,021 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 8 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 91 [2023-11-26 10:46:09,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:09,023 INFO L225 Difference]: With dead ends: 317 [2023-11-26 10:46:09,023 INFO L226 Difference]: Without dead ends: 197 [2023-11-26 10:46:09,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=1265, Unknown=0, NotChecked=0, Total=1406 [2023-11-26 10:46:09,026 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 165 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:09,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1434 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:46:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-26 10:46:09,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 158. [2023-11-26 10:46:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 137 states have internal predecessors, (154), 27 states have call successors, (27), 11 states have call predecessors, (27), 9 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-26 10:46:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 195 transitions. [2023-11-26 10:46:09,050 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 195 transitions. Word has length 91 [2023-11-26 10:46:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:09,051 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 195 transitions. [2023-11-26 10:46:09,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 8 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2023-11-26 10:46:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 195 transitions. [2023-11-26 10:46:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-26 10:46:09,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:09,053 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:09,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:09,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:09,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:09,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash 960775938, now seen corresponding path program 1 times [2023-11-26 10:46:09,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:09,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101301749] [2023-11-26 10:46:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:09,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:10,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:10,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:11,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:11,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 10:46:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:11,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-26 10:46:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:11,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:11,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:46:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:11,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 10:46:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:11,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:12,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 10:46:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:12,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-26 10:46:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:46:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 25 proven. 19 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 10:46:12,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:12,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101301749] [2023-11-26 10:46:12,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101301749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:12,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568055211] [2023-11-26 10:46:12,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:12,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:12,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:12,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:12,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:46:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:12,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-26 10:46:12,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:13,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 10:46:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 29 proven. 23 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-26 10:46:13,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:14,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-26 10:46:14,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-26 10:46:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-26 10:46:14,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568055211] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:46:14,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:46:14,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 25 [2023-11-26 10:46:14,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006758099] [2023-11-26 10:46:14,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:14,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-26 10:46:14,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:14,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-26 10:46:14,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2023-11-26 10:46:14,161 INFO L87 Difference]: Start difference. First operand 158 states and 195 transitions. Second operand has 25 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (15), 9 states have call predecessors, (15), 11 states have call successors, (15) [2023-11-26 10:46:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:15,871 INFO L93 Difference]: Finished difference Result 324 states and 402 transitions. [2023-11-26 10:46:15,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-26 10:46:15,871 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (15), 9 states have call predecessors, (15), 11 states have call successors, (15) Word has length 94 [2023-11-26 10:46:15,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:15,874 INFO L225 Difference]: With dead ends: 324 [2023-11-26 10:46:15,874 INFO L226 Difference]: Without dead ends: 169 [2023-11-26 10:46:15,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=256, Invalid=1466, Unknown=0, NotChecked=0, Total=1722 [2023-11-26 10:46:15,877 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 87 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:15,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1299 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:46:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-26 10:46:15,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2023-11-26 10:46:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 127 states have (on average 1.2519685039370079) internal successors, (159), 144 states have internal predecessors, (159), 29 states have call successors, (29), 12 states have call predecessors, (29), 11 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-26 10:46:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 206 transitions. [2023-11-26 10:46:15,903 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 206 transitions. Word has length 94 [2023-11-26 10:46:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:15,904 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 206 transitions. [2023-11-26 10:46:15,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (15), 9 states have call predecessors, (15), 11 states have call successors, (15) [2023-11-26 10:46:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 206 transitions. [2023-11-26 10:46:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-26 10:46:15,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:15,907 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:15,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:16,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a4f9340-13b8-4f2f-a068-bd8205a1c5d2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:16,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:16,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash 67289600, now seen corresponding path program 1 times [2023-11-26 10:46:16,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:16,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20762603] [2023-11-26 10:46:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:16,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:25,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:25,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:25,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 10:46:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:25,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-26 10:46:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:25,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:25,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:46:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:25,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 10:46:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:27,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 10:46:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:29,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-26 10:46:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat