./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop3-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/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_c1d8e8bc-331d-4a69-8383-35c5578de2a7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop3-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/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_c1d8e8bc-331d-4a69-8383-35c5578de2a7/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 ccfd17a0a2b2dd458ee3d25df19dbb6099f500e99d7cf6e9ace735cc6fc55dfe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:38,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:38,539 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:51:38,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:38,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:38,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:38,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:38,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:38,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:38,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:38,575 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:38,575 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:38,576 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:38,576 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:51:38,577 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:38,577 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:38,578 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:51:38,578 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:51:38,579 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:38,580 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:51:38,580 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:51:38,581 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:51:38,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:38,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:51:38,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:38,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:38,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:51:38,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:38,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:51:38,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:51:38,585 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:38,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:38,586 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:38,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:38,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:38,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:38,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:51:38,588 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:51:38,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:51:38,589 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:51:38,590 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:38,594 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:38,594 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_c1d8e8bc-331d-4a69-8383-35c5578de2a7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccfd17a0a2b2dd458ee3d25df19dbb6099f500e99d7cf6e9ace735cc6fc55dfe [2023-11-19 04:51:38,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:38,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:38,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:38,941 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:38,943 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:38,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop3-back-serstep.c [2023-11-19 04:51:42,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:43,190 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:43,192 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop3-back-serstep.c [2023-11-19 04:51:43,251 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/bin/utaipan-verify-t7M7D8N6sZ/data/5aecdc1df/52061cbaef0b42f08354ae3601d8de9a/FLAGfb19c30e5 [2023-11-19 04:51:43,272 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/bin/utaipan-verify-t7M7D8N6sZ/data/5aecdc1df/52061cbaef0b42f08354ae3601d8de9a [2023-11-19 04:51:43,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:43,280 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:43,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:43,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:43,288 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:43,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e05532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43, skipping insertion in model container [2023-11-19 04:51:43,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,589 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:44,002 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_c1d8e8bc-331d-4a69-8383-35c5578de2a7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop3-back-serstep.c[1181,1194] [2023-11-19 04:51:45,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:45,948 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:51:45,967 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_c1d8e8bc-331d-4a69-8383-35c5578de2a7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop3-back-serstep.c[1181,1194] [2023-11-19 04:51:47,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:47,653 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:51:47,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:47 WrapperNode [2023-11-19 04:51:47,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:47,671 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:47,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:51:47,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:51:47,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:47" (1/1) ... [2023-11-19 04:51:48,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:47" (1/1) ... [2023-11-19 04:51:54,999 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63790 [2023-11-19 04:51:55,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:55,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:51:55,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:51:55,026 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:51:55,036 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:47" (1/1) ... [2023-11-19 04:51:55,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:47" (1/1) ... [2023-11-19 04:51:56,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:47" (1/1) ... [2023-11-19 04:51:56,532 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:47" (1/1) ... [2023-11-19 04:51:58,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:47" (1/1) ... [2023-11-19 04:51:58,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:47" (1/1) ... [2023-11-19 04:51:59,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:47" (1/1) ... [2023-11-19 04:51:59,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:47" (1/1) ... [2023-11-19 04:52:00,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:52:00,610 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:52:00,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:52:00,612 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:52:00,613 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:47" (1/1) ... [2023-11-19 04:52:00,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:52:00,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:52:00,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:52:00,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1d8e8bc-331d-4a69-8383-35c5578de2a7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:52:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:52:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:52:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:52:00,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:52:03,177 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:52:03,179 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation