./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fa88b8fffb6d00fe351813dff04ff095de9add832c65b297aee5013953d8af16 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:58:42,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:58:42,665 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:58:42,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:58:42,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:58:42,699 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:58:42,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:58:42,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:58:42,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:58:42,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:58:42,703 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:58:42,704 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:58:42,705 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:58:42,706 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:58:42,706 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:58:42,707 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:58:42,707 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:58:42,708 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:58:42,709 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:58:42,709 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:58:42,710 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:58:42,711 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:58:42,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:58:42,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:58:42,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:58:42,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:58:42,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:58:42,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:58:42,714 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:58:42,715 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:58:42,715 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:58:42,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:58:42,716 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:58:42,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:58:42,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:58:42,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:58:42,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:58:42,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:58:42,718 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:58:42,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:58:42,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:58:42,725 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:58:42,725 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:58:42,725 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:58:42,726 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa88b8fffb6d00fe351813dff04ff095de9add832c65b297aee5013953d8af16 [2023-11-24 23:58:43,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:58:43,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:58:43,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:58:43,112 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:58:43,112 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:58:43,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c [2023-11-24 23:58:46,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:58:47,132 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:58:47,133 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c [2023-11-24 23:58:47,156 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/data/5eefd8a23/f294a2f704fd499c8d5057ec15ab96b5/FLAG14015f250 [2023-11-24 23:58:47,175 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/data/5eefd8a23/f294a2f704fd499c8d5057ec15ab96b5 [2023-11-24 23:58:47,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:58:47,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:58:47,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:58:47,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:58:47,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:58:47,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:58:47" (1/1) ... [2023-11-24 23:58:47,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33432251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:47, skipping insertion in model container [2023-11-24 23:58:47,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:58:47" (1/1) ... [2023-11-24 23:58:47,273 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:58:47,541 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_e3086bf8-534c-4cbb-864d-939fb714a9c6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c[1173,1186] [2023-11-24 23:58:47,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:58:47,922 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:58:47,938 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_e3086bf8-534c-4cbb-864d-939fb714a9c6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c[1173,1186] [2023-11-24 23:58:48,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:58:48,259 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:58:48,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48 WrapperNode [2023-11-24 23:58:48,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:58:48,262 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:58:48,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:58:48,263 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:58:48,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48" (1/1) ... [2023-11-24 23:58:48,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48" (1/1) ... [2023-11-24 23:58:48,991 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4063 [2023-11-24 23:58:48,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:58:48,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:58:48,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:58:48,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:58:49,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48" (1/1) ... [2023-11-24 23:58:49,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48" (1/1) ... [2023-11-24 23:58:49,133 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48" (1/1) ... [2023-11-24 23:58:49,134 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48" (1/1) ... [2023-11-24 23:58:49,319 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48" (1/1) ... [2023-11-24 23:58:49,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48" (1/1) ... [2023-11-24 23:58:49,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48" (1/1) ... [2023-11-24 23:58:49,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48" (1/1) ... [2023-11-24 23:58:49,507 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:58:49,508 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:58:49,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:58:49,508 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:58:49,509 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48" (1/1) ... [2023-11-24 23:58:49,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:58:49,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:58:49,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:58:49,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:58:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:58:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:58:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:58:49,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:58:49,982 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:58:49,985 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:58:54,091 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:59:01,611 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:59:01,612 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:59:01,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:01 BoogieIcfgContainer [2023-11-24 23:59:01,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:59:01,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:59:01,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:59:01,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:59:01,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:58:47" (1/3) ... [2023-11-24 23:59:01,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2c873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:01, skipping insertion in model container [2023-11-24 23:59:01,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:48" (2/3) ... [2023-11-24 23:59:01,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2c873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:01, skipping insertion in model container [2023-11-24 23:59:01,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:01" (3/3) ... [2023-11-24 23:59:01,627 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.2.prop1-func-interl.c [2023-11-24 23:59:01,649 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:59:01,649 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:59:01,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:59:01,720 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=FINITE_AUTOMATA, 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;@497b34e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:59:01,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:59:01,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2023-11-24 23:59:01,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:59:01,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:01,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:59:01,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:59:01,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:01,745 INFO L85 PathProgramCache]: Analyzing trace with hash 158536958, now seen corresponding path program 1 times [2023-11-24 23:59:01,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:59:01,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303272686] [2023-11-24 23:59:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:01,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:59:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:59:02,449 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:59:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:59:02,935 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:59:02,938 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:59:02,939 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:59:02,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:59:02,948 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 23:59:02,954 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:59:03,006 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-24 23:59:03,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:59:03 BoogieIcfgContainer [2023-11-24 23:59:03,036 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:59:03,038 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:59:03,039 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:59:03,039 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:59:03,040 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:01" (3/4) ... [2023-11-24 23:59:03,045 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:59:03,046 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:59:03,048 INFO L158 Benchmark]: Toolchain (without parser) took 15866.61ms. Allocated memory was 140.5MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 93.3MB in the beginning and 839.2MB in the end (delta: -745.8MB). Peak memory consumption was 278.4MB. Max. memory is 16.1GB. [2023-11-24 23:59:03,048 INFO L158 Benchmark]: CDTParser took 1.27ms. Allocated memory is still 140.5MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:59:03,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1078.03ms. Allocated memory was 140.5MB in the beginning and 172.0MB in the end (delta: 31.5MB). Free memory was 93.3MB in the beginning and 120.1MB in the end (delta: -26.8MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2023-11-24 23:59:03,051 INFO L158 Benchmark]: Boogie Procedure Inliner took 729.23ms. Allocated memory was 172.0MB in the beginning and 270.5MB in the end (delta: 98.6MB). Free memory was 120.1MB in the beginning and 174.6MB in the end (delta: -54.4MB). Peak memory consumption was 104.6MB. Max. memory is 16.1GB. [2023-11-24 23:59:03,058 INFO L158 Benchmark]: Boogie Preprocessor took 514.88ms. Allocated memory is still 270.5MB. Free memory was 174.6MB in the beginning and 139.9MB in the end (delta: 34.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-24 23:59:03,060 INFO L158 Benchmark]: RCFGBuilder took 12107.13ms. Allocated memory was 270.5MB in the beginning and 1.2GB in the end (delta: 891.3MB). Free memory was 139.9MB in the beginning and 918.9MB in the end (delta: -779.0MB). Peak memory consumption was 537.9MB. Max. memory is 16.1GB. [2023-11-24 23:59:03,060 INFO L158 Benchmark]: TraceAbstraction took 1418.53ms. Allocated memory is still 1.2GB. Free memory was 918.9MB in the beginning and 839.2MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2023-11-24 23:59:03,062 INFO L158 Benchmark]: Witness Printer took 7.72ms. Allocated memory is still 1.2GB. Free memory was 839.2MB in the beginning and 839.2MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:59:03,073 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.27ms. Allocated memory is still 140.5MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1078.03ms. Allocated memory was 140.5MB in the beginning and 172.0MB in the end (delta: 31.5MB). Free memory was 93.3MB in the beginning and 120.1MB in the end (delta: -26.8MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 729.23ms. Allocated memory was 172.0MB in the beginning and 270.5MB in the end (delta: 98.6MB). Free memory was 120.1MB in the beginning and 174.6MB in the end (delta: -54.4MB). Peak memory consumption was 104.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 514.88ms. Allocated memory is still 270.5MB. Free memory was 174.6MB in the beginning and 139.9MB in the end (delta: 34.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * RCFGBuilder took 12107.13ms. Allocated memory was 270.5MB in the beginning and 1.2GB in the end (delta: 891.3MB). Free memory was 139.9MB in the beginning and 918.9MB in the end (delta: -779.0MB). Peak memory consumption was 537.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1418.53ms. Allocated memory is still 1.2GB. Free memory was 918.9MB in the beginning and 839.2MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * Witness Printer took 7.72ms. Allocated memory is still 1.2GB. Free memory was 839.2MB in the beginning and 839.2MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * 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 127. 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_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L32] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L33] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L35] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L36] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L38] const SORT_2 var_5 = 0; [L39] const SORT_1 var_22 = 0; [L40] const SORT_4 var_45 = 1; [L41] const SORT_4 var_46 = 0; [L42] const SORT_2 var_54 = 0; [L43] const SORT_2 var_56 = 1; [L44] const SORT_3 var_66 = 0; [L45] const SORT_4 var_153 = 2; [L46] const SORT_2 var_165 = 2; [L47] const SORT_4 var_167 = 6; [L49] SORT_1 input_53; [L50] SORT_1 input_55; [L51] SORT_1 input_60; [L52] SORT_1 input_61; [L53] SORT_1 input_65; [L54] SORT_1 input_73; [L55] SORT_1 input_80; [L56] SORT_1 input_84; [L57] SORT_1 input_85; [L58] SORT_1 input_97; [L59] SORT_1 input_101; [L60] SORT_1 input_102; [L61] SORT_1 input_121; [L62] SORT_1 input_124; [L63] SORT_1 input_140; [L64] SORT_1 input_143; [L66] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L66] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L67] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L67] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L68] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L69] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L70] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L71] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L72] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L73] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L74] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L75] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L76] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L77] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L78] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L79] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L80] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L81] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L82] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L83] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L84] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_2 init_7_arg_1 = var_5; [L87] state_6 = init_7_arg_1 [L88] SORT_2 init_9_arg_1 = var_5; [L89] state_8 = init_9_arg_1 [L90] SORT_2 init_11_arg_1 = var_5; [L91] state_10 = init_11_arg_1 [L92] SORT_2 init_13_arg_1 = var_5; [L93] state_12 = init_13_arg_1 [L94] SORT_2 init_15_arg_1 = var_5; [L95] state_14 = init_15_arg_1 [L96] SORT_2 init_17_arg_1 = var_5; [L97] state_16 = init_17_arg_1 [L98] SORT_2 init_19_arg_1 = var_5; [L99] state_18 = init_19_arg_1 [L100] SORT_2 init_21_arg_1 = var_5; [L101] state_20 = init_21_arg_1 [L102] SORT_1 init_24_arg_1 = var_22; [L103] state_23 = init_24_arg_1 [L104] SORT_1 init_26_arg_1 = var_22; [L105] state_25 = init_26_arg_1 [L106] SORT_1 init_28_arg_1 = var_22; [L107] state_27 = init_28_arg_1 [L108] SORT_1 init_30_arg_1 = var_22; [L109] state_29 = init_30_arg_1 [L110] SORT_1 init_32_arg_1 = var_22; [L111] state_31 = init_32_arg_1 [L112] SORT_1 init_34_arg_1 = var_22; [L113] state_33 = init_34_arg_1 [L114] SORT_1 init_36_arg_1 = var_22; [L115] state_35 = init_36_arg_1 [L116] SORT_1 init_38_arg_1 = var_22; [L117] state_37 = init_38_arg_1 [L118] SORT_1 init_40_arg_1 = var_22; [L119] state_39 = init_40_arg_1 [L120] SORT_1 init_42_arg_1 = var_22; [L121] state_41 = init_42_arg_1 [L122] SORT_1 init_44_arg_1 = var_22; [L123] state_43 = init_44_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=16777215, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_6=0, state_8=0, var_153=2, var_165=2, var_167=6, var_22=0, var_45=1, var_46=0, var_54=0, var_56=1, var_5=0, var_66=0] [L126] input_53 = __VERIFIER_nondet_uchar() [L127] EXPR input_53 & mask_SORT_1 [L127] input_53 = input_53 & mask_SORT_1 [L128] input_55 = __VERIFIER_nondet_uchar() [L129] EXPR input_55 & mask_SORT_1 [L129] input_55 = input_55 & mask_SORT_1 [L130] input_60 = __VERIFIER_nondet_uchar() [L131] EXPR input_60 & mask_SORT_1 [L131] input_60 = input_60 & mask_SORT_1 [L132] input_61 = __VERIFIER_nondet_uchar() [L133] EXPR input_61 & mask_SORT_1 [L133] input_61 = input_61 & mask_SORT_1 [L134] input_65 = __VERIFIER_nondet_uchar() [L135] EXPR input_65 & mask_SORT_1 [L135] input_65 = input_65 & mask_SORT_1 [L136] input_73 = __VERIFIER_nondet_uchar() [L137] EXPR input_73 & mask_SORT_1 [L137] input_73 = input_73 & mask_SORT_1 [L138] input_80 = __VERIFIER_nondet_uchar() [L139] EXPR input_80 & mask_SORT_1 [L139] input_80 = input_80 & mask_SORT_1 [L140] input_84 = __VERIFIER_nondet_uchar() [L141] EXPR input_84 & mask_SORT_1 [L141] input_84 = input_84 & mask_SORT_1 [L142] input_85 = __VERIFIER_nondet_uchar() [L143] EXPR input_85 & mask_SORT_1 [L143] input_85 = input_85 & mask_SORT_1 [L144] input_97 = __VERIFIER_nondet_uchar() [L145] EXPR input_97 & mask_SORT_1 [L145] input_97 = input_97 & mask_SORT_1 [L146] input_101 = __VERIFIER_nondet_uchar() [L147] EXPR input_101 & mask_SORT_1 [L147] input_101 = input_101 & mask_SORT_1 [L148] input_102 = __VERIFIER_nondet_uchar() [L149] EXPR input_102 & mask_SORT_1 [L149] input_102 = input_102 & mask_SORT_1 [L150] input_121 = __VERIFIER_nondet_uchar() [L151] input_124 = __VERIFIER_nondet_uchar() [L152] input_140 = __VERIFIER_nondet_uchar() [L153] input_143 = __VERIFIER_nondet_uchar() [L156] SORT_1 var_47_arg_0 = state_31; [L157] SORT_4 var_47_arg_1 = var_45; [L158] SORT_4 var_47_arg_2 = var_46; [L159] SORT_4 var_47 = var_47_arg_0 ? var_47_arg_1 : var_47_arg_2; [L160] SORT_1 var_48_arg_0 = state_41; [L161] SORT_4 var_48_arg_1 = var_45; [L162] SORT_4 var_48_arg_2 = var_46; [L163] SORT_4 var_48 = var_48_arg_0 ? var_48_arg_1 : var_48_arg_2; [L164] SORT_4 var_49_arg_0 = var_47; [L165] SORT_4 var_49_arg_1 = var_48; [L166] SORT_4 var_49 = var_49_arg_0 + var_49_arg_1; [L167] EXPR var_49 & mask_SORT_4 [L167] var_49 = var_49 & mask_SORT_4 [L168] SORT_4 var_50_arg_0 = var_49; [L169] SORT_4 var_50_arg_1 = var_45; [L170] SORT_1 var_50 = var_50_arg_0 <= var_50_arg_1; [L171] SORT_1 var_51_arg_0 = ~state_43; [L172] EXPR var_51_arg_0 & mask_SORT_1 [L172] var_51_arg_0 = var_51_arg_0 & mask_SORT_1 [L173] SORT_1 var_51_arg_1 = ~var_50; [L174] EXPR var_51_arg_1 & mask_SORT_1 [L174] var_51_arg_1 = var_51_arg_1 & mask_SORT_1 [L175] EXPR var_51_arg_0 & var_51_arg_1 [L175] SORT_1 var_51 = var_51_arg_0 & var_51_arg_1; [L176] EXPR var_51 & mask_SORT_1 [L176] var_51 = var_51 & mask_SORT_1 [L177] SORT_1 bad_52_arg_0 = var_51; [L178] CALL __VERIFIER_assert(!(bad_52_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, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2023-11-24 23:59:03,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fa88b8fffb6d00fe351813dff04ff095de9add832c65b297aee5013953d8af16 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:59:06,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:59:06,221 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-24 23:59:06,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:59:06,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:59:06,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:59:06,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:59:06,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:59:06,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:59:06,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:59:06,299 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:59:06,299 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:59:06,300 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:59:06,302 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:59:06,303 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:59:06,303 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:59:06,308 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:59:06,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:59:06,309 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:59:06,310 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:59:06,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:59:06,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:59:06,312 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:59:06,313 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:59:06,314 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:59:06,314 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:59:06,315 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:59:06,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:59:06,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:59:06,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:59:06,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:59:06,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:06,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:59:06,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:59:06,320 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:59:06,320 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:59:06,321 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:59:06,321 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:59:06,321 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:59:06,323 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:59:06,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:59:06,324 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa88b8fffb6d00fe351813dff04ff095de9add832c65b297aee5013953d8af16 [2023-11-24 23:59:06,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:59:06,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:59:06,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:59:06,942 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:59:06,943 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:59:06,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c [2023-11-24 23:59:10,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:59:11,415 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:59:11,416 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c [2023-11-24 23:59:11,441 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/data/b34f07b5f/ea7c251374f74a9f80b498eabb9436c8/FLAGed2f00557 [2023-11-24 23:59:11,461 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/data/b34f07b5f/ea7c251374f74a9f80b498eabb9436c8 [2023-11-24 23:59:11,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:59:11,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:59:11,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:11,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:59:11,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:59:11,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:11" (1/1) ... [2023-11-24 23:59:11,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70677426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:11, skipping insertion in model container [2023-11-24 23:59:11,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:11" (1/1) ... [2023-11-24 23:59:11,559 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:59:11,785 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_e3086bf8-534c-4cbb-864d-939fb714a9c6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c[1173,1186] [2023-11-24 23:59:12,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:12,192 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:59:12,209 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_e3086bf8-534c-4cbb-864d-939fb714a9c6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c[1173,1186] [2023-11-24 23:59:12,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:12,497 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:59:12,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12 WrapperNode [2023-11-24 23:59:12,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:12,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:12,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:59:12,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:59:12,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,792 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1096 [2023-11-24 23:59:12,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:12,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:59:12,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:59:12,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:59:12,810 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:59:12,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:59:12,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:59:12,972 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:59:12,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (1/1) ... [2023-11-24 23:59:12,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:13,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:13,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:59:13,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:59:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:59:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:59:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:59:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:59:13,594 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:59:13,597 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:59:16,015 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:59:16,100 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:59:16,100 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:59:16,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:16 BoogieIcfgContainer [2023-11-24 23:59:16,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:59:16,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:59:16,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:59:16,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:59:16,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:59:11" (1/3) ... [2023-11-24 23:59:16,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22aefe28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:16, skipping insertion in model container [2023-11-24 23:59:16,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:12" (2/3) ... [2023-11-24 23:59:16,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22aefe28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:16, skipping insertion in model container [2023-11-24 23:59:16,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:16" (3/3) ... [2023-11-24 23:59:16,117 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.2.prop1-func-interl.c [2023-11-24 23:59:16,138 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:59:16,139 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:59:16,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:59:16,216 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=FINITE_AUTOMATA, 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;@6af4f445, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:59:16,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:59:16,225 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) [2023-11-24 23:59:16,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:59:16,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:16,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:59:16,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:59:16,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:16,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-24 23:59:16,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:59:16,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550556312] [2023-11-24 23:59:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:16,258 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 [2023-11-24 23:59:16,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:59:16,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:59:16,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:59:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:16,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 23:59:16,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:59:17,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:59:17,143 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:59:17,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550556312] [2023-11-24 23:59:17,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550556312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:17,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:59:17,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:59:17,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762137355] [2023-11-24 23:59:17,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:17,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:59:17,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:59:17,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:59:17,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:59:17,210 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) [2023-11-24 23:59:17,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:17,686 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-24 23:59:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:59:17,690 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 [2023-11-24 23:59:17,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:17,700 INFO L225 Difference]: With dead ends: 16 [2023-11-24 23:59:17,701 INFO L226 Difference]: Without dead ends: 9 [2023-11-24 23:59:17,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:59:17,713 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:17,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:59:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-24 23:59:17,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-24 23:59:17,756 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) [2023-11-24 23:59:17,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-24 23:59:17,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-24 23:59:17,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:17,760 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-24 23:59:17,761 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) [2023-11-24 23:59:17,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-24 23:59:17,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:59:17,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:17,763 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-24 23:59:17,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:59:17,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:59:17,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:59:17,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:17,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-24 23:59:17,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:59:17,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131501988] [2023-11-24 23:59:17,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:17,976 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 [2023-11-24 23:59:17,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:59:17,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:59:17,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:59:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:19,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 91 conjunts are in the unsatisfiable core [2023-11-24 23:59:19,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:59:20,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:59:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:59:25,408 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:59:25,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131501988] [2023-11-24 23:59:25,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131501988] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:59:25,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1233306495] [2023-11-24 23:59:25,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:25,416 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:59:25,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:59:25,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:59:25,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3086bf8-534c-4cbb-864d-939fb714a9c6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-24 23:59:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:26,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-24 23:59:26,711 INFO L285 TraceCheckSpWp]: Computing forward predicates...