./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop5-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_d34b5570-3caa-4960-a109-c65cf1898464/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d34b5570-3caa-4960-a109-c65cf1898464/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_d34b5570-3caa-4960-a109-c65cf1898464/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d34b5570-3caa-4960-a109-c65cf1898464/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop5-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d34b5570-3caa-4960-a109-c65cf1898464/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_d34b5570-3caa-4960-a109-c65cf1898464/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 665e7117e1fd0f762b16c70ad7b4249fdb63749d06eaf15bd360fd2ce4306028 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:43:17,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:43:17,644 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d34b5570-3caa-4960-a109-c65cf1898464/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 01:43:17,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:43:17,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:43:17,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:43:17,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:43:17,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:43:17,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:43:17,684 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:43:17,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:43:17,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:43:17,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:43:17,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:43:17,685 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:43:17,685 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:43:17,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:43:17,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:43:17,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:43:17,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:43:17,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:43:17,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:43:17,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:43:17,687 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:43:17,687 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:43:17,687 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:43:17,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:43:17,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:43:17,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:43:17,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:43:17,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:43:17,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:43:17,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:43:17,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:43:17,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:43:17,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:43:17,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:43:17,689 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:43:17,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:43:17,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:43:17,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:43:17,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:43:17,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:43:17,690 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:43:17,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:43:17,690 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_d34b5570-3caa-4960-a109-c65cf1898464/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 -> 665e7117e1fd0f762b16c70ad7b4249fdb63749d06eaf15bd360fd2ce4306028 [2024-11-24 01:43:18,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:43:18,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:43:18,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:43:18,044 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:43:18,044 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:43:18,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d34b5570-3caa-4960-a109-c65cf1898464/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop5-back-serstep.c [2024-11-24 01:43:21,303 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d34b5570-3caa-4960-a109-c65cf1898464/bin/uautomizer-verify-LYvppIcaGC/data/0b10aec88/159bbe120d794d56aefa0329ca9252a1/FLAG4ffa7d7be [2024-11-24 01:43:22,057 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:43:22,058 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d34b5570-3caa-4960-a109-c65cf1898464/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop5-back-serstep.c [2024-11-24 01:43:22,113 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d34b5570-3caa-4960-a109-c65cf1898464/bin/uautomizer-verify-LYvppIcaGC/data/0b10aec88/159bbe120d794d56aefa0329ca9252a1/FLAG4ffa7d7be [2024-11-24 01:43:22,133 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d34b5570-3caa-4960-a109-c65cf1898464/bin/uautomizer-verify-LYvppIcaGC/data/0b10aec88/159bbe120d794d56aefa0329ca9252a1 [2024-11-24 01:43:22,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:43:22,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:43:22,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:43:22,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:43:22,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:43:22,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:43:22" (1/1) ... [2024-11-24 01:43:22,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1ea8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:22, skipping insertion in model container [2024-11-24 01:43:22,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:43:22" (1/1) ... [2024-11-24 01:43:22,408 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:43:22,850 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_d34b5570-3caa-4960-a109-c65cf1898464/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop5-back-serstep.c[1180,1193] [2024-11-24 01:43:25,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:43:25,226 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:43:25,241 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_d34b5570-3caa-4960-a109-c65cf1898464/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop5-back-serstep.c[1180,1193] [2024-11-24 01:43:26,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:43:26,855 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:43:26,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26 WrapperNode [2024-11-24 01:43:26,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:43:26,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:43:26,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:43:26,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:43:26,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:27,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:32,149 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48134 [2024-11-24 01:43:32,150 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:43:32,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:43:32,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:43:32,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:43:32,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:32,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:33,649 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:34,104 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 01:43:34,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:34,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:35,512 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:35,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:35,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:36,028 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:36,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:36,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:43:36,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:43:36,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:43:36,921 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:43:36,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:26" (1/1) ... [2024-11-24 01:43:36,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:43:36,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d34b5570-3caa-4960-a109-c65cf1898464/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:36,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d34b5570-3caa-4960-a109-c65cf1898464/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:43:37,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d34b5570-3caa-4960-a109-c65cf1898464/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:43:37,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:43:37,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:43:37,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:43:37,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:43:40,536 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:43:40,538 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation