./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya --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 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:52:28,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:52:28,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:52:28,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:52:28,736 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:52:28,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:52:28,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:52:28,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:52:28,765 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:52:28,766 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:52:28,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:52:28,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:52:28,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:52:28,768 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:52:28,769 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:52:28,769 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:52:28,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:52:28,770 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:52:28,771 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:52:28,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:52:28,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:52:28,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:52:28,773 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:52:28,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:52:28,774 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:52:28,774 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:52:28,775 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:52:28,775 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:52:28,776 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:52:28,776 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:52:28,776 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:52:28,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:52:28,777 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:52:28,777 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:52:28,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:52:28,778 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:52:28,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:52:28,778 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:52:28,778 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:52:28,779 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:52:28,779 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:52:28,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:52:28,779 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2023-11-29 02:52:29,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:52:29,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:52:29,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:52:29,033 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:52:29,034 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:52:29,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-11-29 02:52:31,813 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:52:32,020 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:52:32,021 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-11-29 02:52:32,036 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/data/49e0e5f4e/1cf003b4aaa54736a2084708defa86a6/FLAG80676a7a3 [2023-11-29 02:52:32,048 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/data/49e0e5f4e/1cf003b4aaa54736a2084708defa86a6 [2023-11-29 02:52:32,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:52:32,052 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:52:32,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:52:32,053 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:52:32,057 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:52:32,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bba61b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32, skipping insertion in model container [2023-11-29 02:52:32,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,097 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:52:32,324 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2023-11-29 02:52:32,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:52:32,375 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:52:32,401 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2023-11-29 02:52:32,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:52:32,442 WARN L675 CHandler]: The function insert_fnc is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:52:32,448 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:52:32,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32 WrapperNode [2023-11-29 02:52:32,448 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:52:32,449 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:52:32,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:52:32,450 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:52:32,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,471 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,500 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 230 [2023-11-29 02:52:32,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:52:32,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:52:32,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:52:32,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:52:32,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,519 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,551 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]. [2023-11-29 02:52:32,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,563 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,578 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:52:32,579 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:52:32,579 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:52:32,579 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:52:32,580 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (1/1) ... [2023-11-29 02:52:32,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:52:32,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:52:32,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:52:32,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:52:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-11-29 02:52:32,639 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-11-29 02:52:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2023-11-29 02:52:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2023-11-29 02:52:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:52:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:52:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2023-11-29 02:52:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2023-11-29 02:52:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:52:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 02:52:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 02:52:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 02:52:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-29 02:52:32,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-29 02:52:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 02:52:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 02:52:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 02:52:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:52:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 02:52:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 02:52:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 02:52:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2023-11-29 02:52:32,643 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2023-11-29 02:52:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2023-11-29 02:52:32,643 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2023-11-29 02:52:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:52:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:52:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:52:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:52:32,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:52:32,785 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:52:32,787 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:52:33,170 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:52:33,206 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:52:33,206 INFO L309 CfgBuilder]: Removed 38 assume(true) statements. [2023-11-29 02:52:33,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:52:33 BoogieIcfgContainer [2023-11-29 02:52:33,207 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:52:33,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:52:33,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:52:33,213 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:52:33,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:52:32" (1/3) ... [2023-11-29 02:52:33,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c0e650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:52:33, skipping insertion in model container [2023-11-29 02:52:33,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:52:32" (2/3) ... [2023-11-29 02:52:33,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c0e650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:52:33, skipping insertion in model container [2023-11-29 02:52:33,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:52:33" (3/3) ... [2023-11-29 02:52:33,215 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2023-11-29 02:52:33,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:52:33,231 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:52:33,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:52:33,280 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7334bfff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:52:33,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:52:33,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 85 states have (on average 1.8) internal successors, (153), 105 states have internal predecessors, (153), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 02:52:33,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 02:52:33,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:52:33,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:52:33,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:52:33,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:52:33,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1364741834, now seen corresponding path program 1 times [2023-11-29 02:52:33,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:52:33,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96378007] [2023-11-29 02:52:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:52:33,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:52:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:33,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:33,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:52:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 02:52:33,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:52:33,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96378007] [2023-11-29 02:52:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96378007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:52:33,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:52:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:52:33,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8521393] [2023-11-29 02:52:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:52:33,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:52:33,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:52:33,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:52:33,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:52:33,686 INFO L87 Difference]: Start difference. First operand has 117 states, 85 states have (on average 1.8) internal successors, (153), 105 states have internal predecessors, (153), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 02:52:33,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:52:33,925 INFO L93 Difference]: Finished difference Result 231 states and 409 transitions. [2023-11-29 02:52:33,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:52:33,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-11-29 02:52:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:52:33,937 INFO L225 Difference]: With dead ends: 231 [2023-11-29 02:52:33,937 INFO L226 Difference]: Without dead ends: 112 [2023-11-29 02:52:33,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:52:33,945 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 38 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:52:33,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 149 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:52:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-29 02:52:33,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-29 02:52:33,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 100 states have internal predecessors, (107), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 02:52:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 141 transitions. [2023-11-29 02:52:33,994 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 141 transitions. Word has length 30 [2023-11-29 02:52:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:52:33,994 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 141 transitions. [2023-11-29 02:52:33,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 02:52:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 141 transitions. [2023-11-29 02:52:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 02:52:33,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:52:33,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:52:33,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:52:33,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:52:33,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:52:33,998 INFO L85 PathProgramCache]: Analyzing trace with hash 208543916, now seen corresponding path program 1 times [2023-11-29 02:52:33,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:52:33,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977451836] [2023-11-29 02:52:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:52:33,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:52:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:34,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:52:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:52:34,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:52:34,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977451836] [2023-11-29 02:52:34,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977451836] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:52:34,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048035994] [2023-11-29 02:52:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:52:34,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:52:34,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:52:34,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:52:34,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:52:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:34,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 02:52:34,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:52:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:52:35,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:52:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:52:35,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048035994] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:52:35,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:52:35,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2023-11-29 02:52:35,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175533131] [2023-11-29 02:52:35,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:52:35,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:52:35,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:52:35,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:52:35,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:52:35,198 INFO L87 Difference]: Start difference. First operand 112 states and 141 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 02:52:35,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:52:35,618 INFO L93 Difference]: Finished difference Result 234 states and 308 transitions. [2023-11-29 02:52:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:52:35,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2023-11-29 02:52:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:52:35,622 INFO L225 Difference]: With dead ends: 234 [2023-11-29 02:52:35,623 INFO L226 Difference]: Without dead ends: 124 [2023-11-29 02:52:35,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:52:35,626 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 55 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:52:35,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 294 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:52:35,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-29 02:52:35,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-11-29 02:52:35,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 107 states have internal predecessors, (115), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 02:52:35,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 155 transitions. [2023-11-29 02:52:35,648 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 155 transitions. Word has length 31 [2023-11-29 02:52:35,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:52:35,649 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 155 transitions. [2023-11-29 02:52:35,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 02:52:35,649 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 155 transitions. [2023-11-29 02:52:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:52:35,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:52:35,653 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:52:35,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:52:35,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:52:35,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:52:35,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:52:35,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1337816308, now seen corresponding path program 1 times [2023-11-29 02:52:35,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:52:35,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950877560] [2023-11-29 02:52:35,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:52:35,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:52:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:37,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:52:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:38,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 02:52:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:38,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:52:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:38,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:52:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 02:52:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:38,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:52:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:38,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 02:52:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:38,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:52:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:38,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:38,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:52:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 12 proven. 56 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 02:52:38,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:52:38,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950877560] [2023-11-29 02:52:38,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950877560] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:52:38,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446156434] [2023-11-29 02:52:38,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:52:38,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:52:38,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:52:38,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:52:38,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:52:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:39,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 02:52:39,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:52:39,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 02:52:39,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-29 02:52:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 29 proven. 5 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-29 02:52:39,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:52:40,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 02:52:40,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 02:52:40,206 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-29 02:52:40,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446156434] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:52:40,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:52:40,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 23 [2023-11-29 02:52:40,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303834833] [2023-11-29 02:52:40,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:52:40,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 02:52:40,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:52:40,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 02:52:40,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:52:40,210 INFO L87 Difference]: Start difference. First operand 124 states and 155 transitions. Second operand has 23 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 8 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2023-11-29 02:52:41,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:52:41,568 INFO L93 Difference]: Finished difference Result 317 states and 407 transitions. [2023-11-29 02:52:41,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 02:52:41,568 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 8 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 91 [2023-11-29 02:52:41,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:52:41,571 INFO L225 Difference]: With dead ends: 317 [2023-11-29 02:52:41,571 INFO L226 Difference]: Without dead ends: 197 [2023-11-29 02:52:41,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=1265, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 02:52:41,574 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 165 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:52:41,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1434 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:52:41,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-29 02:52:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 158. [2023-11-29 02:52:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 137 states have internal predecessors, (154), 27 states have call successors, (27), 11 states have call predecessors, (27), 9 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 02:52:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 195 transitions. [2023-11-29 02:52:41,595 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 195 transitions. Word has length 91 [2023-11-29 02:52:41,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:52:41,595 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 195 transitions. [2023-11-29 02:52:41,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 8 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2023-11-29 02:52:41,596 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 195 transitions. [2023-11-29 02:52:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 02:52:41,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:52:41,598 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:52:41,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:52:41,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:52:41,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:52:41,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:52:41,801 INFO L85 PathProgramCache]: Analyzing trace with hash 960775938, now seen corresponding path program 1 times [2023-11-29 02:52:41,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:52:41,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301448878] [2023-11-29 02:52:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:52:41,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:52:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:43,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:52:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 02:52:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:43,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:52:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:43,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:43,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:52:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 02:52:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:43,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:52:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:44,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 02:52:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:44,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:52:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:44,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:44,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:52:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 25 proven. 19 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-29 02:52:44,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:52:44,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301448878] [2023-11-29 02:52:44,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301448878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:52:44,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065060121] [2023-11-29 02:52:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:52:44,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:52:44,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:52:44,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:52:44,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:52:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:44,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 02:52:44,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:52:44,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 02:52:44,968 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 29 proven. 23 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-29 02:52:44,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:52:45,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 02:52:45,540 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 [2023-11-29 02:52:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-29 02:52:45,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065060121] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:52:45,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:52:45,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 25 [2023-11-29 02:52:45,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155793501] [2023-11-29 02:52:45,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:52:45,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 02:52:45,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:52:45,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 02:52:45,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2023-11-29 02:52:45,596 INFO L87 Difference]: Start difference. First operand 158 states and 195 transitions. Second operand has 25 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (15), 9 states have call predecessors, (15), 11 states have call successors, (15) [2023-11-29 02:52:46,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:52:46,764 INFO L93 Difference]: Finished difference Result 324 states and 402 transitions. [2023-11-29 02:52:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 02:52:46,765 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (15), 9 states have call predecessors, (15), 11 states have call successors, (15) Word has length 94 [2023-11-29 02:52:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:52:46,767 INFO L225 Difference]: With dead ends: 324 [2023-11-29 02:52:46,767 INFO L226 Difference]: Without dead ends: 169 [2023-11-29 02:52:46,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=256, Invalid=1466, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 02:52:46,770 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 87 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:52:46,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1299 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 02:52:46,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-29 02:52:46,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2023-11-29 02:52:46,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 127 states have (on average 1.2519685039370079) internal successors, (159), 144 states have internal predecessors, (159), 29 states have call successors, (29), 12 states have call predecessors, (29), 11 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-29 02:52:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 206 transitions. [2023-11-29 02:52:46,795 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 206 transitions. Word has length 94 [2023-11-29 02:52:46,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:52:46,796 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 206 transitions. [2023-11-29 02:52:46,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (15), 9 states have call predecessors, (15), 11 states have call successors, (15) [2023-11-29 02:52:46,796 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 206 transitions. [2023-11-29 02:52:46,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 02:52:46,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:52:46,798 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:52:46,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:52:47,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:52:47,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:52:47,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:52:47,005 INFO L85 PathProgramCache]: Analyzing trace with hash 67289600, now seen corresponding path program 1 times [2023-11-29 02:52:47,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:52:47,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111870492] [2023-11-29 02:52:47,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:52:47,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:52:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:52,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:52:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:52,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:52:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:53,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 02:52:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:52:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:01,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:53:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:01,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:53:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:02,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 02:53:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:03,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:53:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 02:53:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:05,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 02:53:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:36,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:53:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:37,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:53:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:37,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:53:37,653 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:395) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:869) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:793) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:379) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:379) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:379) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:379) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:379) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:379) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.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.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2023-11-29 02:53:37,657 INFO L158 Benchmark]: Toolchain (without parser) took 65605.23ms. Allocated memory was 151.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 112.1MB in the beginning and 955.4MB in the end (delta: -843.4MB). Peak memory consumption was 201.9MB. Max. memory is 16.1GB. [2023-11-29 02:53:37,657 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:53:37,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.68ms. Allocated memory is still 151.0MB. Free memory was 111.4MB in the beginning and 91.9MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 02:53:37,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.27ms. Allocated memory is still 151.0MB. Free memory was 91.9MB in the beginning and 89.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:53:37,658 INFO L158 Benchmark]: Boogie Preprocessor took 77.34ms. Allocated memory is still 151.0MB. Free memory was 89.5MB in the beginning and 83.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 02:53:37,659 INFO L158 Benchmark]: RCFGBuilder took 627.73ms. Allocated memory was 151.0MB in the beginning and 190.8MB in the end (delta: 39.8MB). Free memory was 83.2MB in the beginning and 146.2MB in the end (delta: -63.0MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2023-11-29 02:53:37,659 INFO L158 Benchmark]: TraceAbstraction took 64446.41ms. Allocated memory was 190.8MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 146.2MB in the beginning and 955.4MB in the end (delta: -809.2MB). Peak memory consumption was 194.2MB. Max. memory is 16.1GB. [2023-11-29 02:53:37,662 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.68ms. Allocated memory is still 151.0MB. Free memory was 111.4MB in the beginning and 91.9MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.27ms. Allocated memory is still 151.0MB. Free memory was 91.9MB in the beginning and 89.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.34ms. Allocated memory is still 151.0MB. Free memory was 89.5MB in the beginning and 83.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 627.73ms. Allocated memory was 151.0MB in the beginning and 190.8MB in the end (delta: 39.8MB). Free memory was 83.2MB in the beginning and 146.2MB in the end (delta: -63.0MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. * TraceAbstraction took 64446.41ms. Allocated memory was 190.8MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 146.2MB in the beginning and 955.4MB in the end (delta: -809.2MB). Peak memory consumption was 194.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-11-29 02:53:37,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya --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 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:53:39,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:53:39,874 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 02:53:39,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:53:39,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:53:39,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:53:39,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:53:39,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:53:39,917 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:53:39,918 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:53:39,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:53:39,919 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:53:39,920 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:53:39,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:53:39,921 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:53:39,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:53:39,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:53:39,923 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:53:39,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:53:39,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:53:39,925 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:53:39,926 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:53:39,926 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:53:39,927 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 02:53:39,927 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 02:53:39,928 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 02:53:39,928 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:53:39,928 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:53:39,929 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:53:39,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:53:39,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:53:39,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:53:39,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:53:39,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:53:39,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:53:39,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:53:39,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:53:39,932 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 02:53:39,932 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 02:53:39,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:53:39,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:53:39,933 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:53:39,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:53:39,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:53:39,934 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 02:53:39,934 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2023-11-29 02:53:40,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:53:40,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:53:40,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:53:40,280 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:53:40,280 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:53:40,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-11-29 02:53:43,204 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:53:43,479 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:53:43,479 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2023-11-29 02:53:43,495 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/data/2e474fdf3/24814a09d0b44e4b9e30f37d825a7218/FLAGcf62db0f9 [2023-11-29 02:53:43,767 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/data/2e474fdf3/24814a09d0b44e4b9e30f37d825a7218 [2023-11-29 02:53:43,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:53:43,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:53:43,773 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:53:43,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:53:43,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:53:43,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:53:43" (1/1) ... [2023-11-29 02:53:43,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2d226c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:43, skipping insertion in model container [2023-11-29 02:53:43,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:53:43" (1/1) ... [2023-11-29 02:53:43,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:53:44,118 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2023-11-29 02:53:44,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:53:44,188 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:53:44,224 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2023-11-29 02:53:44,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:53:44,300 WARN L675 CHandler]: The function insert_fnc is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:53:44,311 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:53:44,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44 WrapperNode [2023-11-29 02:53:44,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:53:44,314 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:53:44,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:53:44,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:53:44,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,398 INFO L138 Inliner]: procedures = 141, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 231 [2023-11-29 02:53:44,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:53:44,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:53:44,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:53:44,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:53:44,413 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,473 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]. [2023-11-29 02:53:44,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,474 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,504 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,508 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:53:44,521 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:53:44,521 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:53:44,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:53:44,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:53:44,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:53:44,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:53:44,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:53:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-11-29 02:53:44,595 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-11-29 02:53:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2023-11-29 02:53:44,595 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2023-11-29 02:53:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:53:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:53:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2023-11-29 02:53:44,597 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2023-11-29 02:53:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:53:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 02:53:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 02:53:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 02:53:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-29 02:53:44,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-29 02:53:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 02:53:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 02:53:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 02:53:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:53:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 02:53:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 02:53:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 02:53:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2023-11-29 02:53:44,600 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2023-11-29 02:53:44,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 02:53:44,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 02:53:44,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 02:53:44,601 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2023-11-29 02:53:44,601 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2023-11-29 02:53:44,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:53:44,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:53:44,802 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:53:44,805 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:53:45,418 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:53:45,457 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:53:45,457 INFO L309 CfgBuilder]: Removed 38 assume(true) statements. [2023-11-29 02:53:45,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:53:45 BoogieIcfgContainer [2023-11-29 02:53:45,458 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:53:45,461 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:53:45,461 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:53:45,464 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:53:45,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:53:43" (1/3) ... [2023-11-29 02:53:45,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7fe474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:53:45, skipping insertion in model container [2023-11-29 02:53:45,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44" (2/3) ... [2023-11-29 02:53:45,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7fe474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:53:45, skipping insertion in model container [2023-11-29 02:53:45,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:53:45" (3/3) ... [2023-11-29 02:53:45,468 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2023-11-29 02:53:45,485 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:53:45,485 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:53:45,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:53:45,544 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5bf11066, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:53:45,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:53:45,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 85 states have (on average 1.8) internal successors, (153), 105 states have internal predecessors, (153), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 02:53:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 02:53:45,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:53:45,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:53:45,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:53:45,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:53:45,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1364741834, now seen corresponding path program 1 times [2023-11-29 02:53:45,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:53:45,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524025186] [2023-11-29 02:53:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:53:45,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:53:45,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:53:45,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:53:45,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 02:53:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:45,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:53:45,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:53:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:53:45,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:53:45,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:53:45,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524025186] [2023-11-29 02:53:45,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524025186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:53:45,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:53:45,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:53:45,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939090240] [2023-11-29 02:53:45,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:53:45,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:53:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:53:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:53:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:53:45,929 INFO L87 Difference]: Start difference. First operand has 117 states, 85 states have (on average 1.8) internal successors, (153), 105 states have internal predecessors, (153), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 02:53:46,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:53:46,129 INFO L93 Difference]: Finished difference Result 231 states and 409 transitions. [2023-11-29 02:53:46,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:53:46,132 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2023-11-29 02:53:46,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:53:46,142 INFO L225 Difference]: With dead ends: 231 [2023-11-29 02:53:46,143 INFO L226 Difference]: Without dead ends: 112 [2023-11-29 02:53:46,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:53:46,152 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:53:46,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:53:46,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-29 02:53:46,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-29 02:53:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 100 states have internal predecessors, (107), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 02:53:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 141 transitions. [2023-11-29 02:53:46,205 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 141 transitions. Word has length 30 [2023-11-29 02:53:46,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:53:46,206 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 141 transitions. [2023-11-29 02:53:46,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 02:53:46,206 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 141 transitions. [2023-11-29 02:53:46,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 02:53:46,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:53:46,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:53:46,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:53:46,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:53:46,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:53:46,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:53:46,411 INFO L85 PathProgramCache]: Analyzing trace with hash 208543916, now seen corresponding path program 1 times [2023-11-29 02:53:46,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:53:46,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421163701] [2023-11-29 02:53:46,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:53:46,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:53:46,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:53:46,413 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:53:46,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 02:53:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:46,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:53:46,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:53:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:53:46,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:53:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:53:47,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:53:47,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421163701] [2023-11-29 02:53:47,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421163701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:53:47,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:53:47,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-11-29 02:53:47,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686902371] [2023-11-29 02:53:47,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:53:47,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:53:47,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:53:47,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:53:47,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:53:47,051 INFO L87 Difference]: Start difference. First operand 112 states and 141 transitions. Second operand has 6 states, 4 states have (on average 5.75) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-11-29 02:53:47,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:53:47,702 INFO L93 Difference]: Finished difference Result 234 states and 308 transitions. [2023-11-29 02:53:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:53:47,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.75) internal successors, (23), 6 states have internal predecessors, (23), 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 31 [2023-11-29 02:53:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:53:47,706 INFO L225 Difference]: With dead ends: 234 [2023-11-29 02:53:47,706 INFO L226 Difference]: Without dead ends: 124 [2023-11-29 02:53:47,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:53:47,710 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 16 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:53:47,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 487 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:53:47,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-29 02:53:47,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-11-29 02:53:47,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 107 states have internal predecessors, (115), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 02:53:47,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 155 transitions. [2023-11-29 02:53:47,733 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 155 transitions. Word has length 31 [2023-11-29 02:53:47,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:53:47,734 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 155 transitions. [2023-11-29 02:53:47,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.75) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-11-29 02:53:47,734 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 155 transitions. [2023-11-29 02:53:47,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:53:47,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:53:47,739 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:53:47,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 02:53:47,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:53:47,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:53:47,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:53:47,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1337816308, now seen corresponding path program 1 times [2023-11-29 02:53:47,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:53:47,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39114937] [2023-11-29 02:53:47,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:53:47,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:53:47,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:53:47,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:53:47,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 02:53:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:48,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:53:48,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:53:48,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 02:53:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 02:53:48,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:53:50,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 02:53:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 13 proven. 60 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-29 02:53:50,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:53:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39114937] [2023-11-29 02:53:50,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39114937] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:53:50,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:53:50,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2023-11-29 02:53:50,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775206733] [2023-11-29 02:53:50,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:53:50,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 02:53:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:53:50,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 02:53:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:53:50,630 INFO L87 Difference]: Start difference. First operand 124 states and 155 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 3 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-29 02:53:52,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:53:52,663 INFO L93 Difference]: Finished difference Result 253 states and 323 transitions. [2023-11-29 02:53:52,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:53:52,664 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 3 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 91 [2023-11-29 02:53:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:53:52,665 INFO L225 Difference]: With dead ends: 253 [2023-11-29 02:53:52,665 INFO L226 Difference]: Without dead ends: 133 [2023-11-29 02:53:52,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2023-11-29 02:53:52,667 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 118 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:53:52,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 733 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 02:53:52,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-29 02:53:52,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2023-11-29 02:53:52,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 96 states have (on average 1.2708333333333333) internal successors, (122), 114 states have internal predecessors, (122), 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) [2023-11-29 02:53:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 163 transitions. [2023-11-29 02:53:52,683 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 163 transitions. Word has length 91 [2023-11-29 02:53:52,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:53:52,683 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 163 transitions. [2023-11-29 02:53:52,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 3 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-29 02:53:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 163 transitions. [2023-11-29 02:53:52,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:53:52,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:53:52,686 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:53:52,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 02:53:52,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:53:52,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:53:52,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:53:52,888 INFO L85 PathProgramCache]: Analyzing trace with hash -786406196, now seen corresponding path program 1 times [2023-11-29 02:53:52,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:53:52,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221956358] [2023-11-29 02:53:52,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:53:52,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:53:52,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:53:52,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:53:52,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 02:53:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:53,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 02:53:53,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:53:53,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 02:53:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-29 02:53:53,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:53:54,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 02:53:54,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 02:53:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-29 02:53:54,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:53:54,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221956358] [2023-11-29 02:53:54,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221956358] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:53:54,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:53:54,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 19 [2023-11-29 02:53:54,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791056554] [2023-11-29 02:53:54,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:53:54,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 02:53:54,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:53:54,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 02:53:54,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:53:54,868 INFO L87 Difference]: Start difference. First operand 132 states and 163 transitions. Second operand has 19 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 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) [2023-11-29 02:53:57,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:53:57,635 INFO L93 Difference]: Finished difference Result 277 states and 346 transitions. [2023-11-29 02:53:57,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 02:53:57,635 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 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 91 [2023-11-29 02:53:57,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:53:57,638 INFO L225 Difference]: With dead ends: 277 [2023-11-29 02:53:57,638 INFO L226 Difference]: Without dead ends: 145 [2023-11-29 02:53:57,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 02:53:57,641 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 143 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:53:57,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 839 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 02:53:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-29 02:53:57,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2023-11-29 02:53:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 104 states have (on average 1.25) internal successors, (130), 122 states have internal predecessors, (130), 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) [2023-11-29 02:53:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 177 transitions. [2023-11-29 02:53:57,660 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 177 transitions. Word has length 91 [2023-11-29 02:53:57,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:53:57,661 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 177 transitions. [2023-11-29 02:53:57,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 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) [2023-11-29 02:53:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 177 transitions. [2023-11-29 02:53:57,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:53:57,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:53:57,664 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:53:57,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 02:53:57,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:53:57,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:53:57,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:53:57,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1034552690, now seen corresponding path program 1 times [2023-11-29 02:53:57,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:53:57,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199942862] [2023-11-29 02:53:57,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:53:57,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:53:57,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:53:57,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:53:57,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 02:53:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:58,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 02:53:58,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:53:58,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 02:53:58,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-29 02:53:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-29 02:53:58,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:53:59,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 02:53:59,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 02:53:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-29 02:53:59,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:53:59,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199942862] [2023-11-29 02:53:59,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199942862] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:53:59,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:53:59,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2023-11-29 02:53:59,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058848478] [2023-11-29 02:53:59,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:53:59,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:53:59,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:53:59,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:53:59,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:53:59,244 INFO L87 Difference]: Start difference. First operand 144 states and 177 transitions. Second operand has 13 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 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) [2023-11-29 02:54:00,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:00,798 INFO L93 Difference]: Finished difference Result 254 states and 315 transitions. [2023-11-29 02:54:00,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:54:00,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 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 91 [2023-11-29 02:54:00,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:00,801 INFO L225 Difference]: With dead ends: 254 [2023-11-29 02:54:00,801 INFO L226 Difference]: Without dead ends: 201 [2023-11-29 02:54:00,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:54:00,802 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 82 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:00,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1462 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:54:00,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-29 02:54:00,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 168. [2023-11-29 02:54:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 127 states have (on average 1.2519685039370079) internal successors, (159), 144 states have internal predecessors, (159), 29 states have call successors, (29), 12 states have call predecessors, (29), 11 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-29 02:54:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 206 transitions. [2023-11-29 02:54:00,818 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 206 transitions. Word has length 91 [2023-11-29 02:54:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:00,818 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 206 transitions. [2023-11-29 02:54:00,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 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) [2023-11-29 02:54:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 206 transitions. [2023-11-29 02:54:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 02:54:00,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:00,821 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:00,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 02:54:01,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:54:01,023 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:01,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash 67289600, now seen corresponding path program 1 times [2023-11-29 02:54:01,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:54:01,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035671308] [2023-11-29 02:54:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:01,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:54:01,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:54:01,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:54:01,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb57224-3761-4ade-ba47-d5ee585efbab/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 02:54:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:02,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 132 conjunts are in the unsatisfiable core [2023-11-29 02:54:02,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:54:02,089 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 [2023-11-29 02:54:02,239 WARN L876 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| (_ bv1 1)))) is different from true [2023-11-29 02:54:09,977 INFO L349 Elim1Store]: treesize reduction 413, result has 34.3 percent of original size [2023-11-29 02:54:09,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 85 treesize of output 371 [2023-11-29 02:56:43,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:56:43,666 INFO L224 Elim1Store]: Index analysis took 183 ms [2023-11-29 02:56:43,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:56:43,699 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:43,703 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:43,705 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:43,706 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:44,048 INFO L349 Elim1Store]: treesize reduction 255, result has 3.8 percent of original size [2023-11-29 02:56:44,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 64 treesize of output 61 [2023-11-29 02:56:44,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:56:44,530 INFO L224 Elim1Store]: Index analysis took 312 ms [2023-11-29 02:56:44,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:44,662 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:44,663 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:44,861 INFO L349 Elim1Store]: treesize reduction 232, result has 0.4 percent of original size [2023-11-29 02:56:44,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 59 treesize of output 49 [2023-11-29 02:56:45,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:56:45,159 INFO L224 Elim1Store]: Index analysis took 149 ms [2023-11-29 02:56:45,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:56:45,194 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:45,196 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:45,197 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:45,198 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:45,200 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:45,423 INFO L349 Elim1Store]: treesize reduction 257, result has 1.5 percent of original size [2023-11-29 02:56:45,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 58 treesize of output 51 [2023-11-29 02:56:45,572 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:45,576 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-29 02:56:45,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 02:56:45,708 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:45,710 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:45,711 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:45,941 INFO L349 Elim1Store]: treesize reduction 185, result has 5.1 percent of original size [2023-11-29 02:56:45,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 61 treesize of output 56 [2023-11-29 02:56:46,147 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:46,702 INFO L349 Elim1Store]: treesize reduction 490, result has 8.8 percent of original size [2023-11-29 02:56:46,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 1309 treesize of output 1255 [2023-11-29 02:56:50,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:56:50,485 INFO L224 Elim1Store]: Index analysis took 316 ms [2023-11-29 02:56:50,496 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:50,498 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:50,499 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 02:56:51,305 INFO L349 Elim1Store]: treesize reduction 444, result has 3.3 percent of original size [2023-11-29 02:56:51,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 76 treesize of output 73 [2023-11-29 02:56:51,783 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-29 02:57:22,325 WARN L293 SmtUtils]: Spent 30.48s on a formula simplification. DAG size of input: 377 DAG size of output: 143 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 02:57:22,325 INFO L349 Elim1Store]: treesize reduction 1183, result has 18.8 percent of original size [2023-11-29 02:57:22,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 10 new quantified variables, introduced 39 case distinctions, treesize of input 269 treesize of output 910