./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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 64bit --witnessprinter.graph.data.programhash c14eea1490451e84235fd4f93f05fdff3c411b2c5f93e6c8c24af5ce00f88831 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:39:27,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:39:27,928 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 01:39:27,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:39:27,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:39:27,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:39:27,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:39:27,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:39:27,958 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:39:27,959 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:39:27,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:39:27,960 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:39:27,961 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:39:27,961 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:39:27,961 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:39:27,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:39:27,963 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:39:27,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:39:27,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:39:27,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:39:27,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:39:27,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:39:27,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:39:27,966 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:39:27,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:39:27,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:39:27,967 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:39:27,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:39:27,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:39:27,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:39:27,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:39:27,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:39:27,969 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:39:27,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:39:27,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:39:27,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:39:27,970 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:39:27,970 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:39:27,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:39:27,970 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_675f9d2d-f2e3-4d98-aac8-7997f535329c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c14eea1490451e84235fd4f93f05fdff3c411b2c5f93e6c8c24af5ce00f88831 [2023-11-29 01:39:28,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:39:28,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:39:28,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:39:28,232 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:39:28,232 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:39:28,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c [2023-11-29 01:39:30,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:39:31,224 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:39:31,225 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c [2023-11-29 01:39:31,237 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/data/25a811c4d/b2c0bba2d74b4d089f9a6034250648c3/FLAGd5c3e0287 [2023-11-29 01:39:31,255 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/data/25a811c4d/b2c0bba2d74b4d089f9a6034250648c3 [2023-11-29 01:39:31,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:39:31,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:39:31,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:39:31,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:39:31,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:39:31,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:31,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc56580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31, skipping insertion in model container [2023-11-29 01:39:31,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:31,324 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:39:31,503 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_675f9d2d-f2e3-4d98-aac8-7997f535329c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c[1248,1261] [2023-11-29 01:39:31,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:39:31,678 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:39:31,691 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_675f9d2d-f2e3-4d98-aac8-7997f535329c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c[1248,1261] [2023-11-29 01:39:31,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:39:31,773 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:39:31,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31 WrapperNode [2023-11-29 01:39:31,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:39:31,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:39:31,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:39:31,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:39:31,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:31,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:32,012 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1360 [2023-11-29 01:39:32,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:39:32,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:39:32,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:39:32,014 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:39:32,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:32,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:32,044 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:32,086 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]. [2023-11-29 01:39:32,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:32,087 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:32,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:32,135 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:32,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:32,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:32,172 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:39:32,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:39:32,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:39:32,174 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:39:32,175 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (1/1) ... [2023-11-29 01:39:32,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:39:32,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:32,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:39:32,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:39:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:39:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:39:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:39:32,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:39:32,441 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:39:32,443 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:39:33,563 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:39:33,617 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:39:33,617 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:39:33,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:39:33 BoogieIcfgContainer [2023-11-29 01:39:33,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:39:33,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:39:33,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:39:33,624 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:39:33,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:39:31" (1/3) ... [2023-11-29 01:39:33,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56282fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:39:33, skipping insertion in model container [2023-11-29 01:39:33,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:31" (2/3) ... [2023-11-29 01:39:33,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56282fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:39:33, skipping insertion in model container [2023-11-29 01:39:33,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:39:33" (3/3) ... [2023-11-29 01:39:33,627 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_Unidec.c [2023-11-29 01:39:33,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:39:33,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:39:33,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:39:33,711 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;@5fd20448, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:39:33,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:39:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 213 states have (on average 1.6666666666666667) internal successors, (355), 214 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:33,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 01:39:33,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:33,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:33,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:33,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:33,730 INFO L85 PathProgramCache]: Analyzing trace with hash -37850296, now seen corresponding path program 1 times [2023-11-29 01:39:33,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:33,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791024251] [2023-11-29 01:39:33,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:33,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:34,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:34,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791024251] [2023-11-29 01:39:34,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791024251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:34,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:34,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:39:34,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79836832] [2023-11-29 01:39:34,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:34,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:39:34,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:34,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:39:34,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:39:34,206 INFO L87 Difference]: Start difference. First operand has 215 states, 213 states have (on average 1.6666666666666667) internal successors, (355), 214 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:34,280 INFO L93 Difference]: Finished difference Result 420 states and 696 transitions. [2023-11-29 01:39:34,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:39:34,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-29 01:39:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:34,293 INFO L225 Difference]: With dead ends: 420 [2023-11-29 01:39:34,293 INFO L226 Difference]: Without dead ends: 215 [2023-11-29 01:39:34,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:39:34,300 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 1 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:34,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1039 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-29 01:39:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2023-11-29 01:39:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.6495327102803738) internal successors, (353), 214 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 353 transitions. [2023-11-29 01:39:34,350 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 353 transitions. Word has length 20 [2023-11-29 01:39:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:34,350 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 353 transitions. [2023-11-29 01:39:34,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 353 transitions. [2023-11-29 01:39:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 01:39:34,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:34,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:34,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:39:34,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:34,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:34,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1171634132, now seen corresponding path program 1 times [2023-11-29 01:39:34,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:34,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857084495] [2023-11-29 01:39:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:34,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:34,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:34,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857084495] [2023-11-29 01:39:34,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857084495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:34,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:34,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:39:34,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850567554] [2023-11-29 01:39:34,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:34,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:39:34,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:34,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:39:34,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:39:34,489 INFO L87 Difference]: Start difference. First operand 215 states and 353 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:34,532 INFO L93 Difference]: Finished difference Result 423 states and 694 transitions. [2023-11-29 01:39:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:39:34,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 01:39:34,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:34,535 INFO L225 Difference]: With dead ends: 423 [2023-11-29 01:39:34,535 INFO L226 Difference]: Without dead ends: 218 [2023-11-29 01:39:34,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:39:34,538 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 1 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:34,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1037 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-29 01:39:34,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2023-11-29 01:39:34,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.6435185185185186) internal successors, (355), 216 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 355 transitions. [2023-11-29 01:39:34,553 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 355 transitions. Word has length 21 [2023-11-29 01:39:34,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:34,553 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 355 transitions. [2023-11-29 01:39:34,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 355 transitions. [2023-11-29 01:39:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 01:39:34,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:34,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:34,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:39:34,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:34,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:34,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2123615202, now seen corresponding path program 1 times [2023-11-29 01:39:34,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:34,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937465271] [2023-11-29 01:39:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:34,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:34,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937465271] [2023-11-29 01:39:34,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937465271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:34,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:34,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:34,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396694121] [2023-11-29 01:39:34,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:34,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:39:34,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:34,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:39:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:39:34,813 INFO L87 Difference]: Start difference. First operand 217 states and 355 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:34,863 INFO L93 Difference]: Finished difference Result 432 states and 708 transitions. [2023-11-29 01:39:34,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:39:34,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-29 01:39:34,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:34,866 INFO L225 Difference]: With dead ends: 432 [2023-11-29 01:39:34,867 INFO L226 Difference]: Without dead ends: 225 [2023-11-29 01:39:34,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:39:34,869 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 667 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:34,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 388 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-29 01:39:34,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 215. [2023-11-29 01:39:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.6401869158878504) internal successors, (351), 214 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 351 transitions. [2023-11-29 01:39:34,884 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 351 transitions. Word has length 22 [2023-11-29 01:39:34,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:34,884 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 351 transitions. [2023-11-29 01:39:34,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:34,885 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 351 transitions. [2023-11-29 01:39:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 01:39:34,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:34,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:34,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:39:34,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:34,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:34,887 INFO L85 PathProgramCache]: Analyzing trace with hash -396344732, now seen corresponding path program 1 times [2023-11-29 01:39:34,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:34,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436079645] [2023-11-29 01:39:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:34,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:39:34,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:39:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:39:35,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:39:35,030 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:39:35,032 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 01:39:35,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:39:35,037 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-29 01:39:35,041 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:39:35,074 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-29 01:39:35,075 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-29 01:39:35,077 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-29 01:39:35,078 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated [2023-11-29 01:39:35,078 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated [2023-11-29 01:39:35,079 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-29 01:39:35,081 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet12 could not be translated [2023-11-29 01:39:35,083 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet14 could not be translated [2023-11-29 01:39:35,085 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet32 could not be translated [2023-11-29 01:39:35,088 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet33 could not be translated [2023-11-29 01:39:35,089 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet34 could not be translated [2023-11-29 01:39:35,090 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-29 01:39:35,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:39:35 BoogieIcfgContainer [2023-11-29 01:39:35,104 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:39:35,105 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:39:35,105 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:39:35,105 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:39:35,106 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:39:33" (3/4) ... [2023-11-29 01:39:35,108 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 01:39:35,109 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:39:35,110 INFO L158 Benchmark]: Toolchain (without parser) took 3850.10ms. Allocated memory was 134.2MB in the beginning and 232.8MB in the end (delta: 98.6MB). Free memory was 97.4MB in the beginning and 124.1MB in the end (delta: -26.7MB). Peak memory consumption was 72.3MB. Max. memory is 16.1GB. [2023-11-29 01:39:35,110 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 134.2MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:39:35,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.33ms. Allocated memory is still 134.2MB. Free memory was 97.0MB in the beginning and 66.4MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-29 01:39:35,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 238.27ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 66.4MB in the beginning and 134.8MB in the end (delta: -68.4MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2023-11-29 01:39:35,112 INFO L158 Benchmark]: Boogie Preprocessor took 159.11ms. Allocated memory is still 182.5MB. Free memory was 134.8MB in the beginning and 118.2MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 01:39:35,112 INFO L158 Benchmark]: RCFGBuilder took 1444.61ms. Allocated memory is still 182.5MB. Free memory was 118.0MB in the beginning and 102.9MB in the end (delta: 15.1MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. [2023-11-29 01:39:35,113 INFO L158 Benchmark]: TraceAbstraction took 1484.13ms. Allocated memory was 182.5MB in the beginning and 232.8MB in the end (delta: 50.3MB). Free memory was 101.9MB in the beginning and 124.1MB in the end (delta: -22.2MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2023-11-29 01:39:35,113 INFO L158 Benchmark]: Witness Printer took 4.07ms. Allocated memory is still 232.8MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:39:35,115 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 134.2MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.33ms. Allocated memory is still 134.2MB. Free memory was 97.0MB in the beginning and 66.4MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 238.27ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 66.4MB in the beginning and 134.8MB in the end (delta: -68.4MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 159.11ms. Allocated memory is still 182.5MB. Free memory was 134.8MB in the beginning and 118.2MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 1444.61ms. Allocated memory is still 182.5MB. Free memory was 118.0MB in the beginning and 102.9MB in the end (delta: 15.1MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1484.13ms. Allocated memory was 182.5MB in the beginning and 232.8MB in the end (delta: 50.3MB). Free memory was 101.9MB in the beginning and 124.1MB in the end (delta: -22.2MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Witness Printer took 4.07ms. Allocated memory is still 232.8MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet32 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet33 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet34 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 161. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 3); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (3 - 1); [L32] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 2); [L33] const SORT_5 msb_SORT_5 = (SORT_5)1 << (2 - 1); [L35] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L36] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L38] const SORT_22 mask_SORT_22 = (SORT_22)-1 >> (sizeof(SORT_22) * 8 - 16); [L39] const SORT_22 msb_SORT_22 = (SORT_22)1 << (16 - 1); [L41] const SORT_68 mask_SORT_68 = (SORT_68)-1 >> (sizeof(SORT_68) * 8 - 13); [L42] const SORT_68 msb_SORT_68 = (SORT_68)1 << (13 - 1); [L44] const SORT_71 mask_SORT_71 = (SORT_71)-1 >> (sizeof(SORT_71) * 8 - 6); [L45] const SORT_71 msb_SORT_71 = (SORT_71)1 << (6 - 1); [L47] const SORT_73 mask_SORT_73 = (SORT_73)-1 >> (sizeof(SORT_73) * 8 - 10); [L48] const SORT_73 msb_SORT_73 = (SORT_73)1 << (10 - 1); [L50] const SORT_79 mask_SORT_79 = (SORT_79)-1 >> (sizeof(SORT_79) * 8 - 9); [L51] const SORT_79 msb_SORT_79 = (SORT_79)1 << (9 - 1); [L53] const SORT_81 mask_SORT_81 = (SORT_81)-1 >> (sizeof(SORT_81) * 8 - 7); [L54] const SORT_81 msb_SORT_81 = (SORT_81)1 << (7 - 1); [L56] const SORT_84 mask_SORT_84 = (SORT_84)-1 >> (sizeof(SORT_84) * 8 - 12); [L57] const SORT_84 msb_SORT_84 = (SORT_84)1 << (12 - 1); [L59] const SORT_86 mask_SORT_86 = (SORT_86)-1 >> (sizeof(SORT_86) * 8 - 4); [L60] const SORT_86 msb_SORT_86 = (SORT_86)1 << (4 - 1); [L62] const SORT_1 var_7 = 0; [L63] const SORT_10 var_12 = 0; [L64] const SORT_1 var_16 = 1; [L65] const SORT_22 var_23 = 8; [L66] const SORT_22 var_24 = 10; [L67] const SORT_3 var_25 = 1; [L68] const SORT_22 var_28 = 88; [L69] const SORT_22 var_29 = 584; [L70] const SORT_3 var_30 = 3; [L71] const SORT_3 var_33 = 2; [L72] const SORT_22 var_37 = 705; [L73] const SORT_22 var_38 = 611; [L74] const SORT_3 var_39 = 5; [L75] const SORT_22 var_42 = 50825; [L76] const SORT_3 var_43 = 7; [L77] const SORT_3 var_46 = 6; [L78] const SORT_3 var_50 = 4; [L79] const SORT_22 var_65 = 0; [L80] const SORT_3 var_67 = 0; [L81] const SORT_71 var_72 = 0; [L82] const SORT_5 var_76 = 1; [L83] const SORT_79 var_80 = 0; [L84] const SORT_84 var_85 = 0; [L85] const SORT_5 var_89 = 3; [L86] const SORT_5 var_92 = 2; [L87] const SORT_68 var_97 = 1; [L88] const SORT_22 var_100 = 32767; [L89] const SORT_5 var_105 = 0; [L90] const SORT_73 var_119 = 1; [L91] const SORT_81 var_131 = 1; [L92] const SORT_86 var_141 = 1; [L94] SORT_1 input_2; [L95] SORT_3 input_4; [L96] SORT_5 input_6; [L97] SORT_22 input_66; [L98] SORT_22 input_96; [L99] SORT_22 input_108; [L100] SORT_22 input_109; [L101] SORT_22 input_118; [L102] SORT_22 input_130; [L103] SORT_22 input_140; [L104] SORT_22 input_157; [L105] SORT_22 input_166; [L106] SORT_22 input_170; [L107] SORT_22 input_179; [L108] SORT_22 input_181; [L109] SORT_22 input_190; [L110] SORT_22 input_197; [L111] SORT_22 input_201; [L112] SORT_22 input_204; [L113] SORT_22 input_206; [L115] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, var_100=32767, var_105=0, var_119=1, var_12=0, var_131=1, var_141=1, var_16=1, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_72=0, var_76=1, var_7=0, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L115] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, state_8=0, var_100=32767, var_105=0, var_119=1, var_12=0, var_131=1, var_141=1, var_16=1, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_72=0, var_76=1, var_7=0, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L116] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] EXPR __VERIFIER_nondet_ushort() & mask_SORT_22 VAL [mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, state_20=0, state_8=0, var_100=32767, var_105=0, var_119=1, var_12=0, var_131=1, var_141=1, var_16=1, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_72=0, var_76=1, var_7=0, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L117] SORT_22 state_58 = __VERIFIER_nondet_ushort() & mask_SORT_22; [L119] SORT_1 init_9_arg_1 = var_7; [L120] state_8 = init_9_arg_1 [L121] SORT_1 init_21_arg_1 = var_16; [L122] state_20 = init_21_arg_1 [L123] SORT_22 init_59_arg_1 = var_23; [L124] state_58 = init_59_arg_1 VAL [init_21_arg_1=1, init_59_arg_1=8, init_9_arg_1=0, mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, state_20=1, state_58=8, state_8=0, var_100=32767, var_105=0, var_119=1, var_12=0, var_131=1, var_141=1, var_16=1, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_72=0, var_76=1, var_7=0, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L127] input_2 = __VERIFIER_nondet_uchar() [L128] input_4 = __VERIFIER_nondet_uchar() [L129] EXPR input_4 & mask_SORT_3 VAL [init_21_arg_1=1, init_59_arg_1=8, init_9_arg_1=0, input_4=0, mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, state_20=1, state_58=8, state_8=0, var_100=32767, var_105=0, var_119=1, var_12=0, var_131=1, var_141=1, var_16=1, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_72=0, var_76=1, var_7=0, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L129] input_4 = input_4 & mask_SORT_3 [L130] input_6 = __VERIFIER_nondet_uchar() [L131] EXPR input_6 & mask_SORT_5 VAL [init_21_arg_1=1, init_59_arg_1=8, init_9_arg_1=0, input_4=0, input_6=0, mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, state_20=1, state_58=8, state_8=0, var_100=32767, var_105=0, var_119=1, var_12=0, var_131=1, var_141=1, var_16=1, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_72=0, var_76=1, var_7=0, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L131] input_6 = input_6 & mask_SORT_5 [L132] input_66 = __VERIFIER_nondet_ushort() [L133] input_96 = __VERIFIER_nondet_ushort() [L134] input_108 = __VERIFIER_nondet_ushort() [L135] input_109 = __VERIFIER_nondet_ushort() [L136] input_118 = __VERIFIER_nondet_ushort() [L137] input_130 = __VERIFIER_nondet_ushort() [L138] input_140 = __VERIFIER_nondet_ushort() [L139] input_157 = __VERIFIER_nondet_ushort() [L140] input_166 = __VERIFIER_nondet_ushort() [L141] input_170 = __VERIFIER_nondet_ushort() [L142] input_179 = __VERIFIER_nondet_ushort() [L143] input_181 = __VERIFIER_nondet_ushort() [L144] input_190 = __VERIFIER_nondet_ushort() [L145] input_197 = __VERIFIER_nondet_ushort() [L146] input_201 = __VERIFIER_nondet_ushort() [L147] input_204 = __VERIFIER_nondet_ushort() [L148] input_206 = __VERIFIER_nondet_ushort() [L151] SORT_1 var_11_arg_0 = state_8; VAL [init_21_arg_1=1, init_59_arg_1=8, init_9_arg_1=0, input_4=0, input_6=0, mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, state_20=1, state_58=8, state_8=0, var_100=32767, var_105=0, var_119=1, var_11_arg_0=0, var_12=0, var_131=1, var_141=1, var_16=1, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_72=0, var_76=1, var_7=0, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L152] EXPR var_11_arg_0 & mask_SORT_1 VAL [init_21_arg_1=1, init_59_arg_1=8, init_9_arg_1=0, input_4=0, input_6=0, mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, state_20=1, state_58=8, state_8=0, var_100=32767, var_105=0, var_119=1, var_11_arg_0=0, var_12=0, var_131=1, var_141=1, var_16=1, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_72=0, var_76=1, var_7=0, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L152] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L153] SORT_10 var_11 = var_11_arg_0; [L154] SORT_10 var_13_arg_0 = var_11; [L155] SORT_10 var_13_arg_1 = var_12; [L156] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L157] SORT_1 var_17_arg_0 = var_13; [L158] SORT_1 var_17 = ~var_17_arg_0; [L159] SORT_1 var_18_arg_0 = var_16; [L160] SORT_1 var_18_arg_1 = var_17; VAL [init_21_arg_1=1, init_59_arg_1=8, init_9_arg_1=0, input_4=0, input_6=0, mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, state_20=1, state_58=8, state_8=0, var_100=32767, var_105=0, var_119=1, var_11=0, var_11_arg_0=0, var_12=0, var_131=1, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_141=1, var_16=1, var_17=254, var_17_arg_0=1, var_18_arg_0=1, var_18_arg_1=254, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_72=0, var_76=1, var_7=0, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L161] EXPR var_18_arg_0 & var_18_arg_1 VAL [init_21_arg_1=1, init_59_arg_1=8, init_9_arg_1=0, input_4=0, input_6=0, mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, state_20=1, state_58=8, state_8=0, var_100=32767, var_105=0, var_119=1, var_11=0, var_11_arg_0=0, var_12=0, var_131=1, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_141=1, var_16=1, var_17=254, var_17_arg_0=1, var_18_arg_0=1, var_18_arg_1=254, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_72=0, var_76=1, var_7=0, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L161] SORT_1 var_18 = var_18_arg_0 & var_18_arg_1; [L162] EXPR var_18 & mask_SORT_1 VAL [init_21_arg_1=1, init_59_arg_1=8, init_9_arg_1=0, input_4=0, input_6=0, mask_SORT_10=4294967295, mask_SORT_1=1, mask_SORT_22=65535, mask_SORT_3=7, mask_SORT_5=3, mask_SORT_68=8191, mask_SORT_71=63, mask_SORT_73=1023, mask_SORT_79=511, mask_SORT_81=127, mask_SORT_84=4095, mask_SORT_86=15, msb_SORT_10=2147483648, msb_SORT_1=1, msb_SORT_22=32768, msb_SORT_3=4, msb_SORT_5=2, msb_SORT_68=4096, msb_SORT_71=32, msb_SORT_73=512, msb_SORT_79=256, msb_SORT_81=64, msb_SORT_84=2048, msb_SORT_86=8, state_20=1, state_58=8, state_8=0, var_100=32767, var_105=0, var_119=1, var_11=0, var_11_arg_0=0, var_12=0, var_131=1, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_141=1, var_16=1, var_17=254, var_17_arg_0=1, var_18=1, var_18_arg_0=1, var_18_arg_1=254, var_23=8, var_24=10, var_25=1, var_28=88, var_29=584, var_30=3, var_33=2, var_37=705, var_38=611, var_39=5, var_42=50825, var_43=7, var_46=6, var_50=4, var_65=0, var_67=0, var_72=0, var_76=1, var_7=0, var_80=0, var_85=0, var_89=3, var_92=2, var_97=1] [L162] var_18 = var_18 & mask_SORT_1 [L163] SORT_1 bad_19_arg_0 = var_18; [L164] CALL __VERIFIER_assert(!(bad_19_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 669 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 669 mSDsluCounter, 2464 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1409 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 1055 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 125 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 01:39:35,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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 64bit --witnessprinter.graph.data.programhash c14eea1490451e84235fd4f93f05fdff3c411b2c5f93e6c8c24af5ce00f88831 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:39:37,051 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:39:37,124 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-29 01:39:37,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:39:37,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:39:37,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:39:37,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:39:37,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:39:37,160 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:39:37,160 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:39:37,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:39:37,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:39:37,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:39:37,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:39:37,163 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:39:37,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:39:37,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:39:37,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:39:37,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:39:37,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:39:37,167 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:39:37,168 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:39:37,168 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 01:39:37,169 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 01:39:37,169 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:39:37,169 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:39:37,170 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:39:37,170 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:39:37,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:39:37,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:39:37,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:39:37,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:39:37,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:39:37,173 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:39:37,173 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 01:39:37,173 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 01:39:37,173 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:39:37,174 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:39:37,174 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:39:37,174 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:39:37,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:39:37,174 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 01:39:37,175 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_675f9d2d-f2e3-4d98-aac8-7997f535329c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c14eea1490451e84235fd4f93f05fdff3c411b2c5f93e6c8c24af5ce00f88831 [2023-11-29 01:39:37,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:39:37,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:39:37,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:39:37,471 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:39:37,472 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:39:37,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c [2023-11-29 01:39:40,284 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:39:40,538 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:39:40,538 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c [2023-11-29 01:39:40,553 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/data/54e2bd19b/b36c03feb3074864975f1b62381b5b0e/FLAG04e24803c [2023-11-29 01:39:40,570 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/data/54e2bd19b/b36c03feb3074864975f1b62381b5b0e [2023-11-29 01:39:40,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:39:40,575 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:39:40,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:39:40,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:39:40,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:39:40,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:39:40" (1/1) ... [2023-11-29 01:39:40,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61fa1fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:40, skipping insertion in model container [2023-11-29 01:39:40,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:39:40" (1/1) ... [2023-11-29 01:39:40,640 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:39:40,811 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_675f9d2d-f2e3-4d98-aac8-7997f535329c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c[1248,1261] [2023-11-29 01:39:40,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:39:40,998 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:39:41,011 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_675f9d2d-f2e3-4d98-aac8-7997f535329c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_Unidec.c[1248,1261] [2023-11-29 01:39:41,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:39:41,113 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:39:41,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41 WrapperNode [2023-11-29 01:39:41,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:39:41,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:39:41,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:39:41,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:39:41,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (1/1) ... [2023-11-29 01:39:41,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (1/1) ... [2023-11-29 01:39:41,202 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 670 [2023-11-29 01:39:41,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:39:41,203 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:39:41,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:39:41,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:39:41,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (1/1) ... [2023-11-29 01:39:41,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (1/1) ... [2023-11-29 01:39:41,222 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (1/1) ... [2023-11-29 01:39:41,246 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]. [2023-11-29 01:39:41,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (1/1) ... [2023-11-29 01:39:41,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (1/1) ... [2023-11-29 01:39:41,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (1/1) ... [2023-11-29 01:39:41,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (1/1) ... [2023-11-29 01:39:41,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (1/1) ... [2023-11-29 01:39:41,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (1/1) ... [2023-11-29 01:39:41,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:39:41,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:39:41,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:39:41,303 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:39:41,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (1/1) ... [2023-11-29 01:39:41,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:39:41,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:41,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:39:41,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:39:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:39:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 01:39:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:39:41,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:39:41,575 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:39:41,578 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:39:42,209 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:39:42,256 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:39:42,256 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:39:42,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:39:42 BoogieIcfgContainer [2023-11-29 01:39:42,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:39:42,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:39:42,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:39:42,262 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:39:42,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:39:40" (1/3) ... [2023-11-29 01:39:42,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607fd9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:39:42, skipping insertion in model container [2023-11-29 01:39:42,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:41" (2/3) ... [2023-11-29 01:39:42,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607fd9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:39:42, skipping insertion in model container [2023-11-29 01:39:42,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:39:42" (3/3) ... [2023-11-29 01:39:42,265 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_Unidec.c [2023-11-29 01:39:42,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:39:42,281 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:39:42,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:39:42,329 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;@1beba64b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:39:42,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:39:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 01:39:42,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:42,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 01:39:42,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:42,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:42,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-29 01:39:42,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:39:42,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001080911] [2023-11-29 01:39:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:42,362 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 01:39:42,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:39:42,364 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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 01:39:42,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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 01:39:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:42,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:39:42,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:42,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:42,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:39:42,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001080911] [2023-11-29 01:39:42,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001080911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:42,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:42,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:42,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453254956] [2023-11-29 01:39:42,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:42,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:39:42,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:39:42,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:39:42,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:39:42,819 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:43,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:43,033 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-29 01:39:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:39:43,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 01:39:43,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:43,042 INFO L225 Difference]: With dead ends: 16 [2023-11-29 01:39:43,042 INFO L226 Difference]: Without dead ends: 9 [2023-11-29 01:39:43,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:39:43,048 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:43,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:39:43,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-29 01:39:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-29 01:39:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:43,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-29 01:39:43,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-29 01:39:43,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:43,077 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-29 01:39:43,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:43,077 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-29 01:39:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:39:43,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:43,078 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 01:39:43,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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 01:39:43,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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 01:39:43,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:43,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:43,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-29 01:39:43,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:39:43,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856839876] [2023-11-29 01:39:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:43,282 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 01:39:43,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:39:43,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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 01:39:43,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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 01:39:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:43,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:39:43,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:44,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:39:44,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:39:44,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856839876] [2023-11-29 01:39:44,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856839876] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:39:44,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:39:44,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 01:39:44,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041392998] [2023-11-29 01:39:44,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:44,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:39:44,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:39:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:39:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:39:44,402 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:44,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:44,619 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-29 01:39:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:39:44,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 01:39:44,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:44,620 INFO L225 Difference]: With dead ends: 14 [2023-11-29 01:39:44,620 INFO L226 Difference]: Without dead ends: 12 [2023-11-29 01:39:44,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:39:44,622 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:44,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:39:44,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-29 01:39:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-29 01:39:44,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:44,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-29 01:39:44,627 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-29 01:39:44,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:44,627 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-29 01:39:44,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:39:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-29 01:39:44,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 01:39:44,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:44,628 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-29 01:39:44,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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)] Forceful destruction successful, exit code 0 [2023-11-29 01:39:44,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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 01:39:44,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:44,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:44,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-29 01:39:44,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:39:44,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423691337] [2023-11-29 01:39:44,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:39:44,832 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 01:39:44,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:39:44,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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 01:39:44,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_675f9d2d-f2e3-4d98-aac8-7997f535329c/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 01:39:46,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:39:46,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:39:46,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 396 conjunts are in the unsatisfiable core [2023-11-29 01:39:46,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:40:15,890 INFO L327 TraceCheckSpWp]: Computing backward predicates...