./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.3.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.3.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c21c7a04f7c65d646dcfd58f2b9e1376593565a3afb4592eab5eb3bc899fc96f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:52:53,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:52:53,313 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:52:53,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:52:53,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:52:53,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:52:53,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:52:53,363 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:52:53,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:52:53,369 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:52:53,369 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:52:53,370 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:52:53,370 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:52:53,372 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:52:53,372 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:52:53,373 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:52:53,373 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:52:53,374 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:52:53,374 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:52:53,375 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:52:53,375 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:52:53,376 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:52:53,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:52:53,378 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:52:53,378 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:52:53,379 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:52:53,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:52:53,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:52:53,380 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:52:53,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:52:53,382 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:52:53,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:52:53,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:52:53,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:52:53,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:52:53,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:52:53,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:52:53,384 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:52:53,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:52:53,385 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:52:53,385 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:52:53,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:52:53,386 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c21c7a04f7c65d646dcfd58f2b9e1376593565a3afb4592eab5eb3bc899fc96f [2023-11-19 04:52:53,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:52:53,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:52:53,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:52:53,764 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:52:53,766 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:52:53,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.3.prop1-back-serstep.c [2023-11-19 04:52:56,986 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:52:57,486 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:52:57,488 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.3.prop1-back-serstep.c [2023-11-19 04:52:57,515 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/data/6554e2c2b/350eed487b634d1db7ea564b1afec825/FLAG272b03198 [2023-11-19 04:52:57,532 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/data/6554e2c2b/350eed487b634d1db7ea564b1afec825 [2023-11-19 04:52:57,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:52:57,540 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:52:57,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:52:57,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:52:57,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:52:57,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:52:57" (1/1) ... [2023-11-19 04:52:57,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4933b6be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:57, skipping insertion in model container [2023-11-19 04:52:57,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:52:57" (1/1) ... [2023-11-19 04:52:57,685 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:52:57,941 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_49afb46a-103b-4ea3-96a9-e71c6269e97c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.3.prop1-back-serstep.c[1177,1190] [2023-11-19 04:52:58,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:52:58,679 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:52:58,692 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_49afb46a-103b-4ea3-96a9-e71c6269e97c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.3.prop1-back-serstep.c[1177,1190] [2023-11-19 04:52:59,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:52:59,073 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:52:59,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:59 WrapperNode [2023-11-19 04:52:59,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:52:59,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:52:59,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:52:59,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:52:59,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:59" (1/1) ... [2023-11-19 04:52:59,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:59" (1/1) ... [2023-11-19 04:53:00,888 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 14304 [2023-11-19 04:53:00,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:00,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:53:00,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:53:00,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:53:00,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:59" (1/1) ... [2023-11-19 04:53:00,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:59" (1/1) ... [2023-11-19 04:53:01,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:59" (1/1) ... [2023-11-19 04:53:01,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:59" (1/1) ... [2023-11-19 04:53:01,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:59" (1/1) ... [2023-11-19 04:53:01,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:59" (1/1) ... [2023-11-19 04:53:02,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:59" (1/1) ... [2023-11-19 04:53:02,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:59" (1/1) ... [2023-11-19 04:53:02,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:53:02,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:53:02,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:53:02,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:53:02,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:59" (1/1) ... [2023-11-19 04:53:02,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:02,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:53:02,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:53:02,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49afb46a-103b-4ea3-96a9-e71c6269e97c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:53:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:53:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:53:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:53:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:53:03,116 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:53:03,220 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:53:14,175 INFO L277 CfgBuilder]: Performing block encoding