./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/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_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB --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 0.3.0-dev-d790fec [2024-11-28 03:44:15,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:44:15,164 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:44:15,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:44:15,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:44:15,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:44:15,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:44:15,217 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:44:15,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:44:15,217 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:44:15,218 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:44:15,218 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:44:15,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:44:15,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:44:15,218 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:44:15,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:44:15,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:44:15,219 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:44:15,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:44:15,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:44:15,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:44:15,219 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:44:15,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:44:15,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:44:15,219 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:44:15,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:44:15,219 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:44:15,220 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:44:15,220 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:44:15,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:44:15,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:44:15,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:44:15,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:44:15,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:44:15,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:44:15,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:44:15,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:44:15,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:44:15,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:44:15,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:44:15,224 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:44:15,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:44:15,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:44:15,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:44:15,225 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:44:15,225 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:44:15,225 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:44:15,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:44:15,225 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 [2024-11-28 03:44:15,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:44:15,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:44:15,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:44:15,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:44:15,595 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:44:15,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2024-11-28 03:44:18,817 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/data/94e35c21d/f03fb6cfe2804cf0910fb1d3737954a4/FLAG0f40dd01c [2024-11-28 03:44:19,195 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:44:19,195 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2024-11-28 03:44:19,213 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/data/94e35c21d/f03fb6cfe2804cf0910fb1d3737954a4/FLAG0f40dd01c [2024-11-28 03:44:19,404 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/data/94e35c21d/f03fb6cfe2804cf0910fb1d3737954a4 [2024-11-28 03:44:19,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:44:19,408 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:44:19,409 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:44:19,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:44:19,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:44:19,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35d858ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19, skipping insertion in model container [2024-11-28 03:44:19,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,457 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:44:19,817 WARN L250 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_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2024-11-28 03:44:19,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:44:19,885 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:44:19,926 WARN L250 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_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2024-11-28 03:44:19,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:44:19,988 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:44:19,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19 WrapperNode [2024-11-28 03:44:19,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:44:19,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:44:19,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:44:19,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:44:19,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,040 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 215 [2024-11-28 03:44:20,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:44:20,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:44:20,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:44:20,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:44:20,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,104 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]. [2024-11-28 03:44:20,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,119 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,131 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:44:20,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:44:20,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:44:20,136 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:44:20,137 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:20,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:44:20,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:20,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:44:20,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:44:20,224 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-11-28 03:44:20,224 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-11-28 03:44:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2024-11-28 03:44:20,225 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2024-11-28 03:44:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:44:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:44:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2024-11-28 03:44:20,225 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2024-11-28 03:44:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:44:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:44:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:44:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:44:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-28 03:44:20,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-28 03:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2024-11-28 03:44:20,226 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2024-11-28 03:44:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2024-11-28 03:44:20,226 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2024-11-28 03:44:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:44:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:44:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:44:20,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:44:20,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:44:20,450 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:44:20,452 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:44:21,101 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-11-28 03:44:21,101 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:44:21,121 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:44:21,125 INFO L312 CfgBuilder]: Removed 24 assume(true) statements. [2024-11-28 03:44:21,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:44:21 BoogieIcfgContainer [2024-11-28 03:44:21,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:44:21,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:44:21,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:44:21,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:44:21,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:44:19" (1/3) ... [2024-11-28 03:44:21,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782833d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:44:21, skipping insertion in model container [2024-11-28 03:44:21,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (2/3) ... [2024-11-28 03:44:21,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782833d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:44:21, skipping insertion in model container [2024-11-28 03:44:21,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:44:21" (3/3) ... [2024-11-28 03:44:21,142 INFO L128 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2024-11-28 03:44:21,163 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:44:21,165 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll_of_dll-2.i that has 7 procedures, 133 locations, 1 initial locations, 24 loop locations, and 1 error locations. [2024-11-28 03:44:21,261 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:44:21,282 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=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;@4d59aa5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:44:21,282 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:44:21,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 101 states have (on average 1.6732673267326732) internal successors, (169), 121 states have internal predecessors, (169), 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) [2024-11-28 03:44:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 03:44:21,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:21,301 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:21,302 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:21,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash 110930755, now seen corresponding path program 1 times [2024-11-28 03:44:21,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:21,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358665835] [2024-11-28 03:44:21,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:21,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:44:21,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:21,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358665835] [2024-11-28 03:44:21,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358665835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:21,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111231640] [2024-11-28 03:44:21,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:21,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:21,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:21,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:21,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:44:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:21,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:44:22,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:44:22,017 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:22,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111231640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:22,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:44:22,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:44:22,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762805093] [2024-11-28 03:44:22,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:22,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:44:22,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:22,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:44:22,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:44:22,056 INFO L87 Difference]: Start difference. First operand has 133 states, 101 states have (on average 1.6732673267326732) internal successors, (169), 121 states have internal predecessors, (169), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-11-28 03:44:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:22,108 INFO L93 Difference]: Finished difference Result 261 states and 439 transitions. [2024-11-28 03:44:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:44:22,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 37 [2024-11-28 03:44:22,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:22,125 INFO L225 Difference]: With dead ends: 261 [2024-11-28 03:44:22,127 INFO L226 Difference]: Without dead ends: 124 [2024-11-28 03:44:22,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:44:22,138 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:22,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:44:22,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-28 03:44:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-28 03:44:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 94 states have (on average 1.2659574468085106) internal successors, (119), 112 states have internal predecessors, (119), 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) [2024-11-28 03:44:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 153 transitions. [2024-11-28 03:44:22,210 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 153 transitions. Word has length 37 [2024-11-28 03:44:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:22,211 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 153 transitions. [2024-11-28 03:44:22,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-11-28 03:44:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 153 transitions. [2024-11-28 03:44:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 03:44:22,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:22,215 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:22,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:44:22,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:44:22,419 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:22,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:22,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1487561327, now seen corresponding path program 1 times [2024-11-28 03:44:22,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:22,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045420533] [2024-11-28 03:44:22,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:22,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:23,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:23,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045420533] [2024-11-28 03:44:23,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045420533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:23,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595402365] [2024-11-28 03:44:23,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:23,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:23,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:23,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:23,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:44:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:24,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 03:44:24,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:44:24,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:44:24,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595402365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:24,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:24,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 18 [2024-11-28 03:44:24,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720455802] [2024-11-28 03:44:24,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:24,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:44:24,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:24,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:44:24,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:44:24,700 INFO L87 Difference]: Start difference. First operand 124 states and 153 transitions. Second operand has 18 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 6 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 03:44:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:26,356 INFO L93 Difference]: Finished difference Result 269 states and 348 transitions. [2024-11-28 03:44:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 03:44:26,357 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 6 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 38 [2024-11-28 03:44:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:26,360 INFO L225 Difference]: With dead ends: 269 [2024-11-28 03:44:26,362 INFO L226 Difference]: Without dead ends: 148 [2024-11-28 03:44:26,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=200, Invalid=1206, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:44:26,368 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 73 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:26,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1258 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:44:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-28 03:44:26,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2024-11-28 03:44:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 111 states have (on average 1.2342342342342343) internal successors, (137), 129 states have internal predecessors, (137), 27 states have call successors, (27), 9 states have call predecessors, (27), 8 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-28 03:44:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 178 transitions. [2024-11-28 03:44:26,405 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 178 transitions. Word has length 38 [2024-11-28 03:44:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:26,406 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 178 transitions. [2024-11-28 03:44:26,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 6 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 03:44:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 178 transitions. [2024-11-28 03:44:26,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:44:26,410 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:26,411 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2024-11-28 03:44:26,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:44:26,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:26,613 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:26,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:26,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1992157647, now seen corresponding path program 1 times [2024-11-28 03:44:26,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:26,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041188363] [2024-11-28 03:44:26,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:26,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:44:28,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:28,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041188363] [2024-11-28 03:44:28,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041188363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:28,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200255290] [2024-11-28 03:44:28,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:28,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:28,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:28,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:28,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:44:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:28,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 03:44:28,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:28,974 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 [2024-11-28 03:44:29,003 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 [2024-11-28 03:44:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 03:44:29,145 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:29,524 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 [2024-11-28 03:44:29,540 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 [2024-11-28 03:44:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 03:44:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200255290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:29,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:29,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 23 [2024-11-28 03:44:29,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548216587] [2024-11-28 03:44:29,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:29,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:44:29,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:29,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:44:29,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:44:29,757 INFO L87 Difference]: Start difference. First operand 147 states and 178 transitions. Second operand has 23 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 19 states have internal predecessors, (64), 8 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 03:44:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:31,386 INFO L93 Difference]: Finished difference Result 366 states and 449 transitions. [2024-11-28 03:44:31,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 03:44:31,387 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 19 states have internal predecessors, (64), 8 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 110 [2024-11-28 03:44:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:31,389 INFO L225 Difference]: With dead ends: 366 [2024-11-28 03:44:31,389 INFO L226 Difference]: Without dead ends: 219 [2024-11-28 03:44:31,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:44:31,392 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 155 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:31,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1880 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:44:31,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-28 03:44:31,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 185. [2024-11-28 03:44:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 144 states have (on average 1.2222222222222223) internal successors, (176), 161 states have internal predecessors, (176), 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) [2024-11-28 03:44:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 223 transitions. [2024-11-28 03:44:31,413 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 223 transitions. Word has length 110 [2024-11-28 03:44:31,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:31,414 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 223 transitions. [2024-11-28 03:44:31,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 19 states have internal predecessors, (64), 8 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 03:44:31,414 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 223 transitions. [2024-11-28 03:44:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 03:44:31,416 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:31,416 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1] [2024-11-28 03:44:31,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:44:31,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:31,621 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:31,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:31,622 INFO L85 PathProgramCache]: Analyzing trace with hash -652135197, now seen corresponding path program 1 times [2024-11-28 03:44:31,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:31,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519714956] [2024-11-28 03:44:31,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:31,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 85 proven. 35 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 03:44:45,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:45,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519714956] [2024-11-28 03:44:45,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519714956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:45,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359643590] [2024-11-28 03:44:45,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:45,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:45,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:45,138 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:45,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:44:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:45,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 233 conjuncts are in the unsatisfiable core [2024-11-28 03:44:45,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:45,579 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 6 treesize of output 5 [2024-11-28 03:44:45,912 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 [2024-11-28 03:44:46,594 INFO L349 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2024-11-28 03:44:46,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 55 [2024-11-28 03:44:46,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:44:46,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 62 [2024-11-28 03:44:46,716 WARN L873 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| 1))) is different from true [2024-11-28 03:44:51,553 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_#StackHeapBarrier| 1))) (or (exists ((|v_dll_create_generic_~#dll~0.base_55| Int)) (and (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (and (= |c_#valid| (store (store |c_old(#valid)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| 1) |v_dll_create_generic_~#dll~0.base_55| (select |c_#valid| |v_dll_create_generic_~#dll~0.base_55|))) (= (select |c_old(#valid)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base|) 0))) (<= .cse0 |v_dll_create_generic_~#dll~0.base_55|))) (exists ((|v_dll_create_generic_~#dll~0.base_55| Int)) (and (exists ((|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_121| Int)) (and (= 0 (select |c_old(#valid)| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_121|)) (= |c_#valid| (store (store |c_old(#valid)| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_121| (select |c_#valid| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_121|)) |v_dll_create_generic_~#dll~0.base_55| (select |c_#valid| |v_dll_create_generic_~#dll~0.base_55|))))) (<= .cse0 |v_dll_create_generic_~#dll~0.base_55|))) (exists ((|v_dll_create_generic_~#dll~0.base_55| Int)) (and (exists ((|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_121| Int) (|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (and (= 0 (select |c_old(#valid)| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_121|)) (= |c_#valid| (store (store (store |c_old(#valid)| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_121| (select |c_#valid| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_121|)) |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| 1) |v_dll_create_generic_~#dll~0.base_55| (select |c_#valid| |v_dll_create_generic_~#dll~0.base_55|))) (not (= |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_121| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base|)) (not (= |v_dll_create_generic_~#dll~0.base_55| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base|)) (not (= |v_dll_create_generic_~#dll~0.base_55| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_121|)))) (<= .cse0 |v_dll_create_generic_~#dll~0.base_55|))) (exists ((|v_dll_create_generic_~#dll~0.base_55| Int)) (and (= (select |c_old(#valid)| |v_dll_create_generic_~#dll~0.base_55|) 0) (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (= |c_#valid| (store (store |c_old(#valid)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| 1) |v_dll_create_generic_~#dll~0.base_55| (select |c_#valid| |v_dll_create_generic_~#dll~0.base_55|)))) (<= .cse0 |v_dll_create_generic_~#dll~0.base_55|))) (exists ((|v_dll_create_generic_~#dll~0.base_55| Int)) (and (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (= |c_#valid| (store (store |c_old(#valid)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| 1) |v_dll_create_generic_~#dll~0.base_55| (select |c_#valid| |v_dll_create_generic_~#dll~0.base_55|)))) (<= .cse0 |v_dll_create_generic_~#dll~0.base_55|))) (exists ((|v_dll_create_generic_~#dll~0.base_55| Int)) (and (= |c_#valid| (store |c_old(#valid)| |v_dll_create_generic_~#dll~0.base_55| (select |c_#valid| |v_dll_create_generic_~#dll~0.base_55|))) (<= .cse0 |v_dll_create_generic_~#dll~0.base_55|))))) is different from true [2024-11-28 03:45:04,853 WARN L286 SmtUtils]: Spent 12.62s on a formula simplification. DAG size of input: 371 DAG size of output: 190 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 03:45:04,854 INFO L349 Elim1Store]: treesize reduction 799, result has 33.5 percent of original size [2024-11-28 03:45:04,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 145 treesize of output 871 [2024-11-28 03:55:14,320 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 03:55:14,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 03:55:14,321 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 03:55:14,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:55:14,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:14,522 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 67 more [2024-11-28 03:55:14,527 INFO L158 Benchmark]: Toolchain (without parser) took 655119.87ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 91.4MB in the beginning and 1.1GB in the end (delta: -978.0MB). Peak memory consumption was 771.9MB. Max. memory is 16.1GB. [2024-11-28 03:55:14,528 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:55:14,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.04ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 71.5MB in the end (delta: 19.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:55:14,528 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.08ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 69.3MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:55:14,529 INFO L158 Benchmark]: Boogie Preprocessor took 93.32ms. Allocated memory is still 117.4MB. Free memory was 69.3MB in the beginning and 63.6MB in the end (delta: 5.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:55:14,529 INFO L158 Benchmark]: RCFGBuilder took 990.14ms. Allocated memory is still 117.4MB. Free memory was 63.6MB in the beginning and 87.1MB in the end (delta: -23.5MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2024-11-28 03:55:14,529 INFO L158 Benchmark]: TraceAbstraction took 653398.85ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 86.6MB in the beginning and 1.1GB in the end (delta: -982.9MB). Peak memory consumption was 765.5MB. Max. memory is 16.1GB. [2024-11-28 03:55:14,531 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 580.04ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 71.5MB in the end (delta: 19.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.08ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 69.3MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.32ms. Allocated memory is still 117.4MB. Free memory was 69.3MB in the beginning and 63.6MB in the end (delta: 5.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 990.14ms. Allocated memory is still 117.4MB. Free memory was 63.6MB in the beginning and 87.1MB in the end (delta: -23.5MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. * TraceAbstraction took 653398.85ms. Allocated memory was 117.4MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 86.6MB in the beginning and 1.1GB in the end (delta: -982.9MB). Peak memory consumption was 765.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/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_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB --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 0.3.0-dev-d790fec [2024-11-28 03:55:17,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:55:17,152 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 03:55:17,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:55:17,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:55:17,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:55:17,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:55:17,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:55:17,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:55:17,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:55:17,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:55:17,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:55:17,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:55:17,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:55:17,227 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:55:17,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:55:17,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:55:17,229 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:55:17,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:55:17,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:55:17,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:55:17,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:55:17,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:55:17,230 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:55:17,230 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:55:17,230 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:55:17,230 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:55:17,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:55:17,231 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:55:17,231 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:55:17,231 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:55:17,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:55:17,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:55:17,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:55:17,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:55:17,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:55:17,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:55:17,232 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:55:17,232 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:55:17,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:55:17,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:55:17,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:55:17,232 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:55:17,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:55:17,232 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:55:17,232 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:55:17,232 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:55:17,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:55:17,233 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:55:17,233 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:55:17,233 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 [2024-11-28 03:55:17,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:55:17,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:55:17,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:55:17,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:55:17,616 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:55:17,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2024-11-28 03:55:21,049 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/data/26821966a/7d0d6a13c8f94157ae4aac3ce1495fee/FLAG47507868b [2024-11-28 03:55:21,371 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:55:21,372 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2024-11-28 03:55:21,385 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/data/26821966a/7d0d6a13c8f94157ae4aac3ce1495fee/FLAG47507868b [2024-11-28 03:55:21,406 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/data/26821966a/7d0d6a13c8f94157ae4aac3ce1495fee [2024-11-28 03:55:21,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:55:21,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:55:21,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:55:21,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:55:21,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:55:21,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:21,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6a9ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21, skipping insertion in model container [2024-11-28 03:55:21,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:21,457 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:55:21,779 WARN L250 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_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2024-11-28 03:55:21,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:55:21,854 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:55:21,904 WARN L250 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_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2024-11-28 03:55:21,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:55:21,977 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:55:21,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21 WrapperNode [2024-11-28 03:55:21,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:55:21,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:55:21,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:55:21,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:55:21,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,053 INFO L138 Inliner]: procedures = 141, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 216 [2024-11-28 03:55:22,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:55:22,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:55:22,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:55:22,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:55:22,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,116 INFO L175 MemorySlicer]: Split 48 memory accesses to 3 slices as follows [2, 40, 6]. 83 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 13 writes are split as follows [0, 11, 2]. [2024-11-28 03:55:22,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,149 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,150 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:55:22,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:55:22,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:55:22,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:55:22,190 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (1/1) ... [2024-11-28 03:55:22,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:55:22,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:22,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:55:22,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:55:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-11-28 03:55:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-11-28 03:55:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2024-11-28 03:55:22,291 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2024-11-28 03:55:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:55:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:55:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2024-11-28 03:55:22,291 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2024-11-28 03:55:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:55:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:55:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:55:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:55:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-28 03:55:22,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-28 03:55:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:55:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:55:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:55:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:55:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:55:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:55:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:55:22,295 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2024-11-28 03:55:22,295 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2024-11-28 03:55:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 03:55:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 03:55:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 03:55:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2024-11-28 03:55:22,296 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2024-11-28 03:55:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:55:22,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:55:22,582 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:55:22,586 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:55:23,468 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-11-28 03:55:23,468 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:55:23,491 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:55:23,493 INFO L312 CfgBuilder]: Removed 24 assume(true) statements. [2024-11-28 03:55:23,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:55:23 BoogieIcfgContainer [2024-11-28 03:55:23,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:55:23,497 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:55:23,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:55:23,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:55:23,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:55:21" (1/3) ... [2024-11-28 03:55:23,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ada7cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:55:23, skipping insertion in model container [2024-11-28 03:55:23,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:21" (2/3) ... [2024-11-28 03:55:23,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ada7cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:55:23, skipping insertion in model container [2024-11-28 03:55:23,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:55:23" (3/3) ... [2024-11-28 03:55:23,507 INFO L128 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2024-11-28 03:55:23,526 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:55:23,528 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll_of_dll-2.i that has 7 procedures, 133 locations, 1 initial locations, 24 loop locations, and 1 error locations. [2024-11-28 03:55:23,603 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:55:23,617 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=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;@4d75558f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:55:23,618 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:55:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 101 states have (on average 1.6732673267326732) internal successors, (169), 121 states have internal predecessors, (169), 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) [2024-11-28 03:55:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 03:55:23,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:23,634 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:23,634 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:23,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash 110930755, now seen corresponding path program 1 times [2024-11-28 03:55:23,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:55:23,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141956620] [2024-11-28 03:55:23,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:23,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:23,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:23,664 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:23,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:55:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:23,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:55:23,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:55:23,991 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:55:23,995 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:55:23,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141956620] [2024-11-28 03:55:23,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141956620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:23,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:23,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:55:23,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681117783] [2024-11-28 03:55:24,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:24,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:55:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:55:24,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:55:24,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:55:24,035 INFO L87 Difference]: Start difference. First operand has 133 states, 101 states have (on average 1.6732673267326732) internal successors, (169), 121 states have internal predecessors, (169), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-11-28 03:55:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:24,110 INFO L93 Difference]: Finished difference Result 261 states and 439 transitions. [2024-11-28 03:55:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:55:24,112 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 37 [2024-11-28 03:55:24,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:24,126 INFO L225 Difference]: With dead ends: 261 [2024-11-28 03:55:24,127 INFO L226 Difference]: Without dead ends: 124 [2024-11-28 03:55:24,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:55:24,140 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:24,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:55:24,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-28 03:55:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-28 03:55:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 94 states have (on average 1.2659574468085106) internal successors, (119), 112 states have internal predecessors, (119), 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) [2024-11-28 03:55:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 153 transitions. [2024-11-28 03:55:24,208 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 153 transitions. Word has length 37 [2024-11-28 03:55:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:24,208 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 153 transitions. [2024-11-28 03:55:24,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-11-28 03:55:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 153 transitions. [2024-11-28 03:55:24,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 03:55:24,211 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:24,211 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:24,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:55:24,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:24,412 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:24,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1487561327, now seen corresponding path program 1 times [2024-11-28 03:55:24,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:55:24,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876369309] [2024-11-28 03:55:24,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:24,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:24,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:24,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:24,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:55:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:24,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 03:55:24,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:25,006 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 [2024-11-28 03:55:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:25,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:55:26,192 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 [2024-11-28 03:55:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:26,297 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:55:26,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876369309] [2024-11-28 03:55:26,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876369309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:55:26,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:55:26,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 17 [2024-11-28 03:55:26,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471602959] [2024-11-28 03:55:26,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:55:26,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:55:26,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:55:26,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:55:26,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:55:26,301 INFO L87 Difference]: Start difference. First operand 124 states and 153 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:55:28,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:28,679 INFO L93 Difference]: Finished difference Result 264 states and 343 transitions. [2024-11-28 03:55:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:55:28,680 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-28 03:55:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:28,682 INFO L225 Difference]: With dead ends: 264 [2024-11-28 03:55:28,682 INFO L226 Difference]: Without dead ends: 143 [2024-11-28 03:55:28,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:55:28,685 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 107 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:28,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1005 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 03:55:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-28 03:55:28,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2024-11-28 03:55:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 124 states have internal predecessors, (133), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (20), 11 states have call predecessors, (20), 12 states have call successors, (20) [2024-11-28 03:55:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 179 transitions. [2024-11-28 03:55:28,709 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 179 transitions. Word has length 38 [2024-11-28 03:55:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:28,709 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 179 transitions. [2024-11-28 03:55:28,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:55:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 179 transitions. [2024-11-28 03:55:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 03:55:28,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:28,711 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:28,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:55:28,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:28,916 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:28,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1219058067, now seen corresponding path program 1 times [2024-11-28 03:55:28,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:55:28,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555091234] [2024-11-28 03:55:28,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:28,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:28,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:28,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:28,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:55:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:29,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:55:29,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:29,232 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 [2024-11-28 03:55:29,316 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 [2024-11-28 03:55:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:55:29,512 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:55:29,512 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:55:29,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555091234] [2024-11-28 03:55:29,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555091234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:29,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:29,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:55:29,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491815654] [2024-11-28 03:55:29,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:29,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:55:29,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:55:29,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:55:29,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:55:29,514 INFO L87 Difference]: Start difference. First operand 140 states and 179 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 03:55:31,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:31,060 INFO L93 Difference]: Finished difference Result 261 states and 330 transitions. [2024-11-28 03:55:31,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:55:31,061 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-11-28 03:55:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:31,064 INFO L225 Difference]: With dead ends: 261 [2024-11-28 03:55:31,064 INFO L226 Difference]: Without dead ends: 205 [2024-11-28 03:55:31,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:55:31,066 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 78 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:31,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1707 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:55:31,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-28 03:55:31,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 170. [2024-11-28 03:55:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 133 states have (on average 1.2481203007518797) internal successors, (166), 151 states have internal predecessors, (166), 27 states have call successors, (27), 8 states have call predecessors, (27), 9 states have return successors, (23), 13 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-28 03:55:31,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 216 transitions. [2024-11-28 03:55:31,089 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 216 transitions. Word has length 38 [2024-11-28 03:55:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:31,089 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 216 transitions. [2024-11-28 03:55:31,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 03:55:31,090 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 216 transitions. [2024-11-28 03:55:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 03:55:31,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:31,105 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:31,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:55:31,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:31,305 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:31,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:31,306 INFO L85 PathProgramCache]: Analyzing trace with hash 998099139, now seen corresponding path program 1 times [2024-11-28 03:55:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:55:31,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527537788] [2024-11-28 03:55:31,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:31,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:31,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:31,310 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:31,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:55:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:31,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:55:31,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:55:31,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:55:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:55:31,857 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:55:31,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527537788] [2024-11-28 03:55:31,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527537788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:55:31,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:55:31,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2024-11-28 03:55:31,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681262319] [2024-11-28 03:55:31,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:55:31,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:55:31,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:55:31,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:55:31,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:55:31,860 INFO L87 Difference]: Start difference. First operand 170 states and 216 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 6 states have internal predecessors, (33), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 03:55:32,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:32,024 INFO L93 Difference]: Finished difference Result 314 states and 410 transitions. [2024-11-28 03:55:32,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:55:32,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 6 states have internal predecessors, (33), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41 [2024-11-28 03:55:32,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:32,027 INFO L225 Difference]: With dead ends: 314 [2024-11-28 03:55:32,030 INFO L226 Difference]: Without dead ends: 147 [2024-11-28 03:55:32,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:55:32,032 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 19 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:32,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 565 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:55:32,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-28 03:55:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-28 03:55:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 111 states have (on average 1.2342342342342343) internal successors, (137), 129 states have internal predecessors, (137), 27 states have call successors, (27), 9 states have call predecessors, (27), 8 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-28 03:55:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 178 transitions. [2024-11-28 03:55:32,049 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 178 transitions. Word has length 41 [2024-11-28 03:55:32,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:32,049 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 178 transitions. [2024-11-28 03:55:32,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 6 states have internal predecessors, (33), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 03:55:32,050 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 178 transitions. [2024-11-28 03:55:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:55:32,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:32,053 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2024-11-28 03:55:32,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:55:32,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:32,254 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:32,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:32,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1992157647, now seen corresponding path program 1 times [2024-11-28 03:55:32,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:55:32,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851399305] [2024-11-28 03:55:32,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:32,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:32,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:32,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:32,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:55:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:32,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 03:55:32,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:32,741 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 [2024-11-28 03:55:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:55:33,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:55:34,634 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 [2024-11-28 03:55:34,656 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 [2024-11-28 03:55:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 29 proven. 25 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:55:34,812 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:55:34,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851399305] [2024-11-28 03:55:34,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851399305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:55:34,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:55:34,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 20 [2024-11-28 03:55:34,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069407508] [2024-11-28 03:55:34,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:55:34,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:55:34,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:55:34,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:55:34,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:55:34,816 INFO L87 Difference]: Start difference. First operand 147 states and 178 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 16 states have internal predecessors, (55), 8 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-28 03:55:38,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:38,513 INFO L93 Difference]: Finished difference Result 309 states and 378 transitions. [2024-11-28 03:55:38,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:55:38,514 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 16 states have internal predecessors, (55), 8 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 110 [2024-11-28 03:55:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:38,516 INFO L225 Difference]: With dead ends: 309 [2024-11-28 03:55:38,519 INFO L226 Difference]: Without dead ends: 162 [2024-11-28 03:55:38,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=202, Invalid=1058, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:55:38,524 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 105 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:38,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1395 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 03:55:38,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-28 03:55:38,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2024-11-28 03:55:38,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 121 states have (on average 1.2148760330578512) internal successors, (147), 139 states have internal predecessors, (147), 29 states have call successors, (29), 11 states have call predecessors, (29), 10 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2024-11-28 03:55:38,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2024-11-28 03:55:38,562 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 110 [2024-11-28 03:55:38,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:38,563 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2024-11-28 03:55:38,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 16 states have internal predecessors, (55), 8 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-28 03:55:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2024-11-28 03:55:38,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:55:38,565 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:38,565 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1] [2024-11-28 03:55:38,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:55:38,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:38,769 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:38,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:38,769 INFO L85 PathProgramCache]: Analyzing trace with hash -274223539, now seen corresponding path program 1 times [2024-11-28 03:55:38,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:55:38,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555485697] [2024-11-28 03:55:38,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:38,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:38,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:38,775 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:38,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:55:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:39,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 03:55:39,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:39,309 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 [2024-11-28 03:55:39,394 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 [2024-11-28 03:55:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 03:55:39,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:55:40,135 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 [2024-11-28 03:55:40,156 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 [2024-11-28 03:55:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 03:55:40,405 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:55:40,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555485697] [2024-11-28 03:55:40,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555485697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:55:40,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:55:40,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2024-11-28 03:55:40,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662872090] [2024-11-28 03:55:40,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:55:40,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:55:40,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:55:40,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:55:40,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:55:40,408 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 03:55:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:42,414 INFO L93 Difference]: Finished difference Result 275 states and 336 transitions. [2024-11-28 03:55:42,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:55:42,415 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 110 [2024-11-28 03:55:42,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:42,418 INFO L225 Difference]: With dead ends: 275 [2024-11-28 03:55:42,418 INFO L226 Difference]: Without dead ends: 219 [2024-11-28 03:55:42,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:55:42,420 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 77 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:42,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1966 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 03:55:42,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-28 03:55:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 185. [2024-11-28 03:55:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 144 states have (on average 1.2222222222222223) internal successors, (176), 161 states have internal predecessors, (176), 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) [2024-11-28 03:55:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 223 transitions. [2024-11-28 03:55:42,439 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 223 transitions. Word has length 110 [2024-11-28 03:55:42,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:42,440 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 223 transitions. [2024-11-28 03:55:42,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 03:55:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 223 transitions. [2024-11-28 03:55:42,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 03:55:42,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:42,442 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1] [2024-11-28 03:55:42,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:55:42,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:42,643 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:42,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:42,645 INFO L85 PathProgramCache]: Analyzing trace with hash -652135197, now seen corresponding path program 1 times [2024-11-28 03:55:42,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:55:42,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578521510] [2024-11-28 03:55:42,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:42,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:42,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:42,650 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:42,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:55:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:43,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-28 03:55:43,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:43,351 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 11 treesize of output 7 [2024-11-28 03:55:43,363 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 [2024-11-28 03:55:43,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:55:43,891 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 11 treesize of output 7 [2024-11-28 03:55:44,066 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2024-11-28 03:55:44,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2024-11-28 03:55:44,792 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 [2024-11-28 03:55:45,597 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-28 03:55:45,750 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 9 treesize of output 7 [2024-11-28 03:55:46,277 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 87 treesize of output 51 [2024-11-28 03:55:46,403 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|dll_create_generic_~#dll~0.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |dll_create_generic_~#dll~0.base|)) (exists ((|##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 1))) (let ((.cse0 (select |c_#memory_$Pointer$#1.base| |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base|))) (let ((.cse1 (select .cse0 (_ bv0 32)))) (and (= (store (store |c_old(#memory_$Pointer$#1.base)| |##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| .cse0) .cse1 (select |c_#memory_$Pointer$#1.base| .cse1)) |c_#memory_$Pointer$#1.base|) (not (= .cse1 (_ bv0 32))) (= (select (store |c_old(#valid)| |dll_create_generic_~#dll~0.base| v_DerPreprocessor_2) .cse1) (_ bv0 1)))))))) (exists ((|dll_create_generic_~#dll~0.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |dll_create_generic_~#dll~0.base|)) (exists ((v_arrayElimCell_10 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 1))) (and (= (_ bv0 1) (select (store |c_old(#valid)| |dll_create_generic_~#dll~0.base| v_DerPreprocessor_2) v_arrayElimCell_10)) (not (= (_ bv0 32) v_arrayElimCell_10)) (= (store |c_old(#memory_$Pointer$#1.base)| v_arrayElimCell_10 (select |c_#memory_$Pointer$#1.base| v_arrayElimCell_10)) |c_#memory_$Pointer$#1.base|)))))) is different from true [2024-11-28 03:55:47,260 INFO L349 Elim1Store]: treesize reduction 137, result has 30.1 percent of original size [2024-11-28 03:55:47,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 183 [2024-11-28 03:55:47,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:55:47,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 189 [2024-11-28 03:55:49,593 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 11 treesize of output 3 [2024-11-28 03:55:49,720 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 11 treesize of output 3 [2024-11-28 03:55:49,960 INFO L349 Elim1Store]: treesize reduction 135, result has 5.6 percent of original size [2024-11-28 03:55:49,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 58 treesize of output 30 [2024-11-28 03:55:50,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:55:50,392 INFO L349 Elim1Store]: treesize reduction 152, result has 6.2 percent of original size [2024-11-28 03:55:50,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 76 treesize of output 38 [2024-11-28 03:55:51,524 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-28 03:55:51,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 59 [2024-11-28 03:55:51,989 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 40 treesize of output 32 [2024-11-28 03:55:52,251 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 42 treesize of output 32 [2024-11-28 03:55:59,589 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 [2024-11-28 03:55:59,601 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 11 treesize of output 7 [2024-11-28 03:56:05,515 WARN L286 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 604 DAG size of output: 151 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 03:56:05,517 INFO L349 Elim1Store]: treesize reduction 1407, result has 22.6 percent of original size [2024-11-28 03:56:05,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 1 disjoint index pairs (out of 120 index pairs), introduced 23 new quantified variables, introduced 135 case distinctions, treesize of input 35860 treesize of output 26569 [2024-11-28 03:56:06,473 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 4117 treesize of output 4109 [2024-11-28 03:56:11,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2024-11-28 03:56:13,426 INFO L349 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2024-11-28 03:56:13,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 58 [2024-11-28 03:56:13,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 114 [2024-11-28 03:56:13,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2024-11-28 03:56:15,538 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 242 treesize of output 206 [2024-11-28 03:56:15,604 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 7 treesize of output 3 [2024-11-28 03:56:16,061 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 77 treesize of output 41 [2024-11-28 03:56:18,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2024-11-28 03:56:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 90 proven. 25 refuted. 0 times theorem prover too weak. 14 trivial. 5 not checked. [2024-11-28 03:56:19,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:41,629 INFO L349 Elim1Store]: treesize reduction 45, result has 40.8 percent of original size [2024-11-28 03:56:41,629 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 48 [2024-11-28 03:56:41,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:56:41,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2024-11-28 03:56:41,697 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2024-11-28 03:56:41,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 99 [2024-11-28 03:56:41,716 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 70 treesize of output 60 [2024-11-28 03:56:41,734 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 44 treesize of output 40 [2024-11-28 03:56:41,806 INFO L349 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2024-11-28 03:56:41,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 94 [2024-11-28 03:56:49,623 INFO L349 Elim1Store]: treesize reduction 295, result has 42.5 percent of original size [2024-11-28 03:56:49,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 5530 treesize of output 4138 [2024-11-28 03:56:50,066 INFO L349 Elim1Store]: treesize reduction 34, result has 55.3 percent of original size [2024-11-28 03:56:50,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1789 treesize of output 1779 [2024-11-28 03:56:50,205 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:56:50,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:56:50,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3361 treesize of output 3367 [2024-11-28 03:56:50,523 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 3663 treesize of output 3467 [2024-11-28 03:56:50,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:56:50,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2861 treesize of output 2821 [2024-11-28 03:56:50,917 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 3633 treesize of output 3469 [2024-11-28 03:56:51,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:56:51,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2766 treesize of output 2759 [2024-11-28 03:56:51,402 INFO L349 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2024-11-28 03:56:51,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 150 [2024-11-28 03:57:03,333 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 10 treesize of output 8 [2024-11-28 03:57:04,737 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:57:04,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 254 treesize of output 408 [2024-11-28 03:57:25,249 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 27 treesize of output 11 [2024-11-28 03:57:25,261 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 24 treesize of output 20 [2024-11-28 03:57:25,768 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 7 treesize of output 3 [2024-11-28 03:57:26,255 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 77 treesize of output 73 [2024-11-28 03:57:26,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:57:26,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:57:26,339 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 58 treesize of output 54 [2024-11-28 03:57:28,566 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:57:28,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 69 [2024-11-28 03:57:29,939 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:57:29,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578521510] [2024-11-28 03:57:29,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578521510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:29,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [585753940] [2024-11-28 03:57:29,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:29,940 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:57:29,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:57:29,943 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:57:29,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5f2afa-a8b8-4c3f-a6b4-10cab9b1aca4/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-28 03:57:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:32,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 175 conjuncts are in the unsatisfiable core [2024-11-28 03:57:32,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:33,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:57:35,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-28 03:57:40,366 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 15 treesize of output 1 [2024-11-28 03:57:42,387 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 64 treesize of output 36 [2024-11-28 03:57:42,415 INFO L349 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2024-11-28 03:57:42,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 51 [2024-11-28 03:57:42,482 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 14 [2024-11-28 03:57:47,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 80 treesize of output 36 [2024-11-28 03:58:17,431 INFO L349 Elim1Store]: treesize reduction 228, result has 30.1 percent of original size [2024-11-28 03:58:17,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 71 treesize of output 197 [2024-11-28 03:58:18,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:58:18,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:58:18,944 INFO L224 Elim1Store]: Index analysis took 227 ms