./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.4.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC --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 64bit --witnessprinter.graph.data.programhash 979181880431ea333df23a273905fd290a554ba76276d4f696d1565d28a654c3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:46:56,629 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:46:56,691 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 01:46:56,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:46:56,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:46:56,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:46:56,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:46:56,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:46:56,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:46:56,722 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:46:56,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:46:56,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:46:56,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:46:56,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:46:56,723 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:46:56,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:46:56,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:46:56,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:46:56,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:46:56,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:46:56,724 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:46:56,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:46:56,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:46:56,725 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:46:56,725 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:46:56,725 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:46:56,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:46:56,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:46:56,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:46:56,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:46:56,726 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:46:56,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:46:56,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:46:56,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:46:56,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:46:56,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:46:56,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:46:56,727 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:46:56,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:46:56,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:46:56,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:46:56,727 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:46:56,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:46:56,728 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:46:56,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:46:56,728 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 979181880431ea333df23a273905fd290a554ba76276d4f696d1565d28a654c3 [2024-11-24 01:46:57,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:46:57,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:46:57,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:46:57,112 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:46:57,112 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:46:57,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.4.prop1-back-serstep.c [2024-11-24 01:47:00,064 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/data/db1ca9218/60b9c06021cd45098f5586af04174744/FLAGc6bd2d9f0 [2024-11-24 01:47:01,312 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:47:01,312 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.4.prop1-back-serstep.c [2024-11-24 01:47:01,428 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/data/db1ca9218/60b9c06021cd45098f5586af04174744/FLAGc6bd2d9f0 [2024-11-24 01:47:01,494 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/data/db1ca9218/60b9c06021cd45098f5586af04174744 [2024-11-24 01:47:01,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:47:01,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:47:01,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:47:01,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:47:01,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:47:01,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:47:01" (1/1) ... [2024-11-24 01:47:01,511 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cfef649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:01, skipping insertion in model container [2024-11-24 01:47:01,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:47:01" (1/1) ... [2024-11-24 01:47:02,009 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:47:02,675 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.4.prop1-back-serstep.c[1181,1194] [2024-11-24 01:47:06,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:47:06,752 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:47:06,768 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.4.prop1-back-serstep.c[1181,1194] [2024-11-24 01:47:09,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:47:09,714 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:47:09,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09 WrapperNode [2024-11-24 01:47:09,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:47:09,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:47:09,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:47:09,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:47:09,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:10,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:23,969 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 144408 [2024-11-24 01:47:23,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:47:23,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:47:23,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:47:23,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:47:23,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:23,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:27,925 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:29,926 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:47:29,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:29,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:33,108 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:33,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:35,263 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:35,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:36,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:38,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:47:38,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:47:38,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:47:38,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:47:38,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:47:09" (1/1) ... [2024-11-24 01:47:38,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:47:38,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:47:38,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:47:38,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c15f9a-6941-4320-a242-05459730c48a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:47:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:47:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:47:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:47:38,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:47:45,925 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:47:45,928 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation