./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.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_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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_3e73b535-f5ae-4179-9d07-3206f127e33d/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 41f47466632cef79c6428d332b083f6bab28594818001ff9f9c3e4bbd8dd136a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:55:40,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:55:40,834 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:55:40,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:55:40,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:55:40,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:55:40,893 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:55:40,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:55:40,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:55:40,900 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:55:40,901 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:55:40,902 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:55:40,903 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:55:40,905 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:55:40,905 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:55:40,906 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:55:40,906 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:55:40,907 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:55:40,907 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:55:40,908 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:55:40,908 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:55:40,909 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:55:40,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:55:40,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:55:40,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:55:40,912 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:55:40,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:55:40,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:55:40,913 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:55:40,914 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:55:40,915 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:55:40,916 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:55:40,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:55:40,916 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:55:40,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:40,917 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:55:40,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:55:40,917 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:55:40,918 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:55:40,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:55:40,918 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:55:40,923 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:55:40,923 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:55:40,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:55:40,924 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_3e73b535-f5ae-4179-9d07-3206f127e33d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41f47466632cef79c6428d332b083f6bab28594818001ff9f9c3e4bbd8dd136a [2023-11-24 23:55:41,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:55:41,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:55:41,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:55:41,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:55:41,382 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:55:41,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c [2023-11-24 23:55:44,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:55:45,192 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:55:45,197 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c [2023-11-24 23:55:45,213 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/data/c75fe940f/69f4de3bdc3b4acd860cdc4fb931bb61/FLAG041968ea2 [2023-11-24 23:55:45,227 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/data/c75fe940f/69f4de3bdc3b4acd860cdc4fb931bb61 [2023-11-24 23:55:45,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:55:45,231 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:55:45,233 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:45,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:55:45,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:55:45,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:45" (1/1) ... [2023-11-24 23:55:45,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@761409f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:45, skipping insertion in model container [2023-11-24 23:55:45,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:45" (1/1) ... [2023-11-24 23:55:45,297 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:55:45,493 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_3e73b535-f5ae-4179-9d07-3206f127e33d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c[1244,1257] [2023-11-24 23:55:45,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:45,820 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:55:45,857 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_3e73b535-f5ae-4179-9d07-3206f127e33d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c[1244,1257] [2023-11-24 23:55:46,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:46,106 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:55:46,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46 WrapperNode [2023-11-24 23:55:46,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:46,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:46,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:55:46,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:55:46,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46" (1/1) ... [2023-11-24 23:55:46,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46" (1/1) ... [2023-11-24 23:55:46,369 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1912 [2023-11-24 23:55:46,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:46,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:55:46,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:55:46,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:55:46,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46" (1/1) ... [2023-11-24 23:55:46,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46" (1/1) ... [2023-11-24 23:55:46,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46" (1/1) ... [2023-11-24 23:55:46,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46" (1/1) ... [2023-11-24 23:55:46,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46" (1/1) ... [2023-11-24 23:55:46,474 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46" (1/1) ... [2023-11-24 23:55:46,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46" (1/1) ... [2023-11-24 23:55:46,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46" (1/1) ... [2023-11-24 23:55:46,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:55:46,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:55:46,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:55:46,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:55:46,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46" (1/1) ... [2023-11-24 23:55:46,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:46,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:46,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:55:46,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:55:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:55:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:55:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:55:46,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:55:46,969 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:55:46,972 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:55:48,608 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:55:51,497 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:55:51,497 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:55:51,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:51 BoogieIcfgContainer [2023-11-24 23:55:51,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:55:51,502 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:55:51,502 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:55:51,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:55:51,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:55:45" (1/3) ... [2023-11-24 23:55:51,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53329dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:51, skipping insertion in model container [2023-11-24 23:55:51,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:46" (2/3) ... [2023-11-24 23:55:51,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53329dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:51, skipping insertion in model container [2023-11-24 23:55:51,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:51" (3/3) ... [2023-11-24 23:55:51,511 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal1.c [2023-11-24 23:55:51,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:55:51,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:55:51,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:55:51,600 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;@5355fae8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:55:51,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:55:51,606 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 23:55:51,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:55:51,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:51,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:55:51,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:51,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:51,623 INFO L85 PathProgramCache]: Analyzing trace with hash 43686310, now seen corresponding path program 1 times [2023-11-24 23:55:51,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:51,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827834637] [2023-11-24 23:55:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:51,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:55:52,374 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:55:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:55:52,782 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:55:52,784 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:55:52,786 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:55:52,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:55:52,792 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 23:55:52,806 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:55:52,859 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-24 23:55:52,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:55:52 BoogieIcfgContainer [2023-11-24 23:55:52,888 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:55:52,890 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:55:52,890 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:55:52,891 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:55:52,892 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:51" (3/4) ... [2023-11-24 23:55:52,896 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:55:52,897 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:55:52,899 INFO L158 Benchmark]: Toolchain (without parser) took 7667.42ms. Allocated memory was 151.0MB in the beginning and 304.1MB in the end (delta: 153.1MB). Free memory was 103.0MB in the beginning and 92.7MB in the end (delta: 10.3MB). Peak memory consumption was 165.3MB. Max. memory is 16.1GB. [2023-11-24 23:55:52,899 INFO L158 Benchmark]: CDTParser took 1.77ms. Allocated memory is still 151.0MB. Free memory is still 96.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:55:52,901 INFO L158 Benchmark]: CACSL2BoogieTranslator took 874.27ms. Allocated memory was 151.0MB in the beginning and 192.9MB in the end (delta: 41.9MB). Free memory was 102.7MB in the beginning and 146.4MB in the end (delta: -43.7MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2023-11-24 23:55:52,902 INFO L158 Benchmark]: Boogie Procedure Inliner took 262.18ms. Allocated memory is still 192.9MB. Free memory was 146.4MB in the beginning and 117.6MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-24 23:55:52,907 INFO L158 Benchmark]: Boogie Preprocessor took 166.43ms. Allocated memory is still 192.9MB. Free memory was 117.6MB in the beginning and 106.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:55:52,908 INFO L158 Benchmark]: RCFGBuilder took 4961.70ms. Allocated memory was 192.9MB in the beginning and 304.1MB in the end (delta: 111.1MB). Free memory was 106.8MB in the beginning and 193.4MB in the end (delta: -86.6MB). Peak memory consumption was 147.0MB. Max. memory is 16.1GB. [2023-11-24 23:55:52,910 INFO L158 Benchmark]: TraceAbstraction took 1386.32ms. Allocated memory is still 304.1MB. Free memory was 193.4MB in the beginning and 93.8MB in the end (delta: 99.6MB). Peak memory consumption was 98.6MB. Max. memory is 16.1GB. [2023-11-24 23:55:52,911 INFO L158 Benchmark]: Witness Printer took 7.47ms. Allocated memory is still 304.1MB. Free memory was 93.8MB in the beginning and 92.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:55:52,919 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.77ms. Allocated memory is still 151.0MB. Free memory is still 96.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 874.27ms. Allocated memory was 151.0MB in the beginning and 192.9MB in the end (delta: 41.9MB). Free memory was 102.7MB in the beginning and 146.4MB in the end (delta: -43.7MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 262.18ms. Allocated memory is still 192.9MB. Free memory was 146.4MB in the beginning and 117.6MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 166.43ms. Allocated memory is still 192.9MB. Free memory was 117.6MB in the beginning and 106.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 4961.70ms. Allocated memory was 192.9MB in the beginning and 304.1MB in the end (delta: 111.1MB). Free memory was 106.8MB in the beginning and 193.4MB in the end (delta: -86.6MB). Peak memory consumption was 147.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1386.32ms. Allocated memory is still 304.1MB. Free memory was 193.4MB in the beginning and 93.8MB in the end (delta: 99.6MB). Peak memory consumption was 98.6MB. Max. memory is 16.1GB. * Witness Printer took 7.47ms. Allocated memory is still 304.1MB. Free memory was 93.8MB in the beginning and 92.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 bitwiseOr at line 261, overapproximation of bitwiseAnd at line 190. 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_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 32); [L30] const SORT_6 msb_SORT_6 = (SORT_6)1 << (32 - 1); [L32] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 4); [L33] const SORT_10 msb_SORT_10 = (SORT_10)1 << (4 - 1); [L35] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 64); [L36] const SORT_14 msb_SORT_14 = (SORT_14)1 << (64 - 1); [L38] const SORT_1 var_56 = 0; [L39] const SORT_6 var_60 = 0; [L40] const SORT_1 var_73 = 1; [L41] const SORT_14 var_77 = 0; [L42] const SORT_10 var_98 = 0; [L44] SORT_1 input_2; [L45] SORT_1 input_3; [L46] SORT_1 input_4; [L47] SORT_1 input_5; [L48] SORT_6 input_7; [L49] SORT_6 input_8; [L50] SORT_1 input_9; [L51] SORT_10 input_11; [L52] SORT_1 input_12; [L53] SORT_1 input_13; [L54] SORT_14 input_15; [L55] SORT_10 input_16; [L56] SORT_1 input_17; [L57] SORT_6 input_18; [L58] SORT_1 input_19; [L59] SORT_10 input_20; [L60] SORT_10 input_21; [L61] SORT_6 input_22; [L62] SORT_6 input_23; [L63] SORT_1 input_24; [L64] SORT_14 input_25; [L65] SORT_10 input_26; [L66] SORT_1 input_27; [L67] SORT_6 input_28; [L68] SORT_6 input_29; [L69] SORT_6 input_30; [L70] SORT_6 input_31; [L71] SORT_10 input_32; [L72] SORT_10 input_33; [L73] SORT_10 input_34; [L74] SORT_10 input_35; [L75] SORT_10 input_36; [L76] SORT_10 input_37; [L77] SORT_10 input_38; [L78] SORT_10 input_39; [L79] SORT_1 input_40; [L80] SORT_1 input_41; [L81] SORT_1 input_42; [L82] SORT_1 input_43; [L83] SORT_1 input_44; [L84] SORT_1 input_45; [L85] SORT_14 input_46; [L86] SORT_14 input_47; [L87] SORT_14 input_48; [L88] SORT_14 input_49; [L89] SORT_6 input_50; [L90] SORT_6 input_51; [L91] SORT_1 input_52; [L92] SORT_1 input_53; [L93] SORT_1 input_54; [L94] SORT_1 input_55; [L96] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L96] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L97] SORT_6 state_61 = __VERIFIER_nondet_uint() & mask_SORT_6; [L98] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L98] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L99] SORT_6 state_66 = __VERIFIER_nondet_uint() & mask_SORT_6; [L100] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L100] SORT_14 state_78 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L101] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L101] SORT_14 state_81 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L102] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L102] SORT_1 state_84 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L103] SORT_1 state_90 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L104] SORT_1 state_93 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L105] SORT_10 state_99 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L106] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L106] SORT_10 state_102 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L107] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L107] SORT_1 state_116 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L108] SORT_1 state_123 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L109] SORT_10 state_135 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L110] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L110] SORT_10 state_138 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L111] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L111] SORT_6 state_148 = __VERIFIER_nondet_uint() & mask_SORT_6; [L112] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L112] SORT_6 state_156 = __VERIFIER_nondet_uint() & mask_SORT_6; [L113] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L113] SORT_14 state_170 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L114] EXPR __VERIFIER_nondet_ulong() & mask_SORT_14 [L114] SORT_14 state_173 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L115] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L115] SORT_1 state_176 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L116] SORT_10 state_179 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L117] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L117] SORT_1 state_184 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L118] SORT_1 state_191 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L119] SORT_10 state_196 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L120] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L120] SORT_1 state_212 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L121] SORT_10 state_217 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L122] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L122] SORT_1 state_223 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L123] SORT_10 state_238 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L124] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L124] SORT_6 state_249 = __VERIFIER_nondet_uint() & mask_SORT_6; [L125] EXPR __VERIFIER_nondet_uint() & mask_SORT_6 [L125] SORT_6 state_282 = __VERIFIER_nondet_uint() & mask_SORT_6; [L127] SORT_1 init_58_arg_1 = var_56; [L128] state_57 = init_58_arg_1 [L129] SORT_6 init_62_arg_1 = var_60; [L130] state_61 = init_62_arg_1 [L131] SORT_1 init_64_arg_1 = var_56; [L132] state_63 = init_64_arg_1 [L133] SORT_6 init_67_arg_1 = var_60; [L134] state_66 = init_67_arg_1 [L135] SORT_14 init_79_arg_1 = var_77; [L136] state_78 = init_79_arg_1 [L137] SORT_14 init_82_arg_1 = var_77; [L138] state_81 = init_82_arg_1 [L139] SORT_1 init_85_arg_1 = var_56; [L140] state_84 = init_85_arg_1 [L141] SORT_1 init_91_arg_1 = var_56; [L142] state_90 = init_91_arg_1 [L143] SORT_1 init_94_arg_1 = var_56; [L144] state_93 = init_94_arg_1 [L145] SORT_10 init_100_arg_1 = var_98; [L146] state_99 = init_100_arg_1 [L147] SORT_10 init_103_arg_1 = var_98; [L148] state_102 = init_103_arg_1 [L149] SORT_1 init_117_arg_1 = var_56; [L150] state_116 = init_117_arg_1 [L151] SORT_1 init_124_arg_1 = var_56; [L152] state_123 = init_124_arg_1 [L153] SORT_10 init_136_arg_1 = var_98; [L154] state_135 = init_136_arg_1 [L155] SORT_10 init_139_arg_1 = var_98; [L156] state_138 = init_139_arg_1 [L157] SORT_6 init_149_arg_1 = var_60; [L158] state_148 = init_149_arg_1 [L159] SORT_6 init_157_arg_1 = var_60; [L160] state_156 = init_157_arg_1 [L161] SORT_14 init_171_arg_1 = var_77; [L162] state_170 = init_171_arg_1 [L163] SORT_14 init_174_arg_1 = var_77; [L164] state_173 = init_174_arg_1 [L165] SORT_1 init_177_arg_1 = var_56; [L166] state_176 = init_177_arg_1 [L167] SORT_10 init_180_arg_1 = var_98; [L168] state_179 = init_180_arg_1 [L169] SORT_1 init_185_arg_1 = var_56; [L170] state_184 = init_185_arg_1 [L171] SORT_1 init_192_arg_1 = var_56; [L172] state_191 = init_192_arg_1 [L173] SORT_10 init_197_arg_1 = var_98; [L174] state_196 = init_197_arg_1 [L175] SORT_1 init_213_arg_1 = var_56; [L176] state_212 = init_213_arg_1 [L177] SORT_10 init_218_arg_1 = var_98; [L178] state_217 = init_218_arg_1 [L179] SORT_1 init_224_arg_1 = var_56; [L180] state_223 = init_224_arg_1 [L181] SORT_10 init_239_arg_1 = var_98; [L182] state_238 = init_239_arg_1 [L183] SORT_6 init_250_arg_1 = var_60; [L184] state_249 = init_250_arg_1 [L185] SORT_6 init_283_arg_1 = var_60; [L186] state_282 = init_283_arg_1 VAL [init_100_arg_1=0, init_103_arg_1=0, init_117_arg_1=0, init_124_arg_1=0, init_136_arg_1=0, init_139_arg_1=0, init_149_arg_1=0, init_157_arg_1=0, init_171_arg_1=0, init_174_arg_1=0, init_177_arg_1=0, init_180_arg_1=0, init_185_arg_1=0, init_192_arg_1=0, init_197_arg_1=0, init_213_arg_1=0, init_218_arg_1=0, init_224_arg_1=0, init_239_arg_1=0, init_250_arg_1=0, init_283_arg_1=0, init_58_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_67_arg_1=0, init_79_arg_1=0, init_82_arg_1=0, init_85_arg_1=0, init_91_arg_1=0, init_94_arg_1=0, mask_SORT_10=15, mask_SORT_14=18446744073709551615, mask_SORT_1=1, mask_SORT_6=4294967295, msb_SORT_10=8, msb_SORT_14=9223372036854775808, msb_SORT_1=1, msb_SORT_6=2147483648, state_102=0, state_116=0, state_123=0, state_135=0, state_138=0, state_148=0, state_156=0, state_170=0, state_173=0, state_176=0, state_179=0, state_184=0, state_191=0, state_196=0, state_212=0, state_217=0, state_223=0, state_238=0, state_249=0, state_282=0, state_57=0, state_61=0, state_63=0, state_66=0, state_78=0, state_81=0, state_84=0, state_90=0, state_93=0, state_99=0, var_56=0, var_60=0, var_73=1, var_77=0, var_98=0] [L189] input_2 = __VERIFIER_nondet_uchar() [L190] EXPR input_2 & mask_SORT_1 [L190] input_2 = input_2 & mask_SORT_1 [L191] input_3 = __VERIFIER_nondet_uchar() [L192] input_4 = __VERIFIER_nondet_uchar() [L193] input_5 = __VERIFIER_nondet_uchar() [L194] input_7 = __VERIFIER_nondet_uint() [L195] input_8 = __VERIFIER_nondet_uint() [L196] input_9 = __VERIFIER_nondet_uchar() [L197] EXPR input_9 & mask_SORT_1 [L197] input_9 = input_9 & mask_SORT_1 [L198] input_11 = __VERIFIER_nondet_uchar() [L199] input_12 = __VERIFIER_nondet_uchar() [L200] input_13 = __VERIFIER_nondet_uchar() [L201] input_15 = __VERIFIER_nondet_ulong() [L202] input_16 = __VERIFIER_nondet_uchar() [L203] input_17 = __VERIFIER_nondet_uchar() [L204] input_18 = __VERIFIER_nondet_uint() [L205] input_19 = __VERIFIER_nondet_uchar() [L206] input_20 = __VERIFIER_nondet_uchar() [L207] input_21 = __VERIFIER_nondet_uchar() [L208] input_22 = __VERIFIER_nondet_uint() [L209] input_23 = __VERIFIER_nondet_uint() [L210] input_24 = __VERIFIER_nondet_uchar() [L211] input_25 = __VERIFIER_nondet_ulong() [L212] input_26 = __VERIFIER_nondet_uchar() [L213] input_27 = __VERIFIER_nondet_uchar() [L214] input_28 = __VERIFIER_nondet_uint() [L215] input_29 = __VERIFIER_nondet_uint() [L216] input_30 = __VERIFIER_nondet_uint() [L217] input_31 = __VERIFIER_nondet_uint() [L218] input_32 = __VERIFIER_nondet_uchar() [L219] input_33 = __VERIFIER_nondet_uchar() [L220] input_34 = __VERIFIER_nondet_uchar() [L221] input_35 = __VERIFIER_nondet_uchar() [L222] input_36 = __VERIFIER_nondet_uchar() [L223] input_37 = __VERIFIER_nondet_uchar() [L224] input_38 = __VERIFIER_nondet_uchar() [L225] input_39 = __VERIFIER_nondet_uchar() [L226] input_40 = __VERIFIER_nondet_uchar() [L227] input_41 = __VERIFIER_nondet_uchar() [L228] input_42 = __VERIFIER_nondet_uchar() [L229] input_43 = __VERIFIER_nondet_uchar() [L230] input_44 = __VERIFIER_nondet_uchar() [L231] input_45 = __VERIFIER_nondet_uchar() [L232] input_46 = __VERIFIER_nondet_ulong() [L233] input_47 = __VERIFIER_nondet_ulong() [L234] input_48 = __VERIFIER_nondet_ulong() [L235] input_49 = __VERIFIER_nondet_ulong() [L236] input_50 = __VERIFIER_nondet_uint() [L237] input_51 = __VERIFIER_nondet_uint() [L238] input_52 = __VERIFIER_nondet_uchar() [L239] input_53 = __VERIFIER_nondet_uchar() [L240] input_54 = __VERIFIER_nondet_uchar() [L241] input_55 = __VERIFIER_nondet_uchar() [L244] SORT_1 var_59_arg_0 = state_57; [L245] SORT_1 var_59 = ~var_59_arg_0; [L246] SORT_1 var_65_arg_0 = state_63; [L247] SORT_6 var_65_arg_1 = state_61; [L248] SORT_6 var_65_arg_2 = input_18; [L249] SORT_6 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L250] EXPR var_65 & mask_SORT_6 [L250] var_65 = var_65 & mask_SORT_6 [L251] SORT_1 var_68_arg_0 = state_63; [L252] SORT_6 var_68_arg_1 = state_66; [L253] SORT_6 var_68_arg_2 = input_18; [L254] SORT_6 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L255] EXPR var_68 & mask_SORT_6 [L255] var_68 = var_68 & mask_SORT_6 [L256] SORT_6 var_69_arg_0 = var_65; [L257] SORT_6 var_69_arg_1 = var_68; [L258] SORT_1 var_69 = var_69_arg_0 == var_69_arg_1; [L259] SORT_1 var_70_arg_0 = var_59; [L260] SORT_1 var_70_arg_1 = var_69; [L261] EXPR var_70_arg_0 | var_70_arg_1 [L261] SORT_1 var_70 = var_70_arg_0 | var_70_arg_1; [L262] SORT_1 var_74_arg_0 = var_70; [L263] SORT_1 var_74 = ~var_74_arg_0; [L264] SORT_1 var_75_arg_0 = var_73; [L265] SORT_1 var_75_arg_1 = var_74; [L266] EXPR var_75_arg_0 & var_75_arg_1 [L266] SORT_1 var_75 = var_75_arg_0 & var_75_arg_1; [L267] EXPR var_75 & mask_SORT_1 [L267] var_75 = var_75 & mask_SORT_1 [L268] SORT_1 bad_76_arg_0 = var_75; [L269] CALL __VERIFIER_assert(!(bad_76_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: 1.2s, 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, 0.6s 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 23:55:52,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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_3e73b535-f5ae-4179-9d07-3206f127e33d/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 41f47466632cef79c6428d332b083f6bab28594818001ff9f9c3e4bbd8dd136a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:55:55,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:55:55,818 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-24 23:55:55,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:55:55,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:55:55,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:55:55,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:55:55,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:55:55,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:55:55,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:55:55,860 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:55:55,861 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:55:55,862 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:55:55,865 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:55:55,866 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:55:55,866 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:55:55,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:55:55,873 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:55:55,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:55:55,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:55:55,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:55:55,875 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:55:55,876 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:55:55,876 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:55:55,877 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:55:55,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:55:55,878 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:55:55,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:55:55,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:55:55,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:55:55,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:55:55,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:55,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:55:55,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:55:55,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:55:55,884 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:55:55,884 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:55:55,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:55:55,885 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:55:55,886 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:55:55,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:55:55,887 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_3e73b535-f5ae-4179-9d07-3206f127e33d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41f47466632cef79c6428d332b083f6bab28594818001ff9f9c3e4bbd8dd136a [2023-11-24 23:55:56,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:55:56,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:55:56,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:55:56,396 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:55:56,396 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:55:56,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c [2023-11-24 23:55:59,615 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:56:00,030 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:56:00,030 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c [2023-11-24 23:56:00,045 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/data/ee21e2a7f/8bb7706ed9f242cb854d3ed1468d83e2/FLAG449c1baca [2023-11-24 23:56:00,059 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/data/ee21e2a7f/8bb7706ed9f242cb854d3ed1468d83e2 [2023-11-24 23:56:00,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:56:00,064 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:56:00,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:00,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:56:00,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:56:00,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:00,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b521052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00, skipping insertion in model container [2023-11-24 23:56:00,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:00,129 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:56:00,342 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_3e73b535-f5ae-4179-9d07-3206f127e33d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c[1244,1257] [2023-11-24 23:56:00,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:00,713 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:56:00,728 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_3e73b535-f5ae-4179-9d07-3206f127e33d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c[1244,1257] [2023-11-24 23:56:00,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:00,819 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:56:00,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00 WrapperNode [2023-11-24 23:56:00,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:00,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:00,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:56:00,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:56:00,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:00,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:01,004 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1160 [2023-11-24 23:56:01,012 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:01,013 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:56:01,013 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:56:01,013 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:56:01,023 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:01,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:01,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:01,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:01,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:01,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:01,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:01,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:01,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:56:01,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:56:01,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:56:01,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:56:01,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00" (1/1) ... [2023-11-24 23:56:01,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:01,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:01,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:56:01,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:56:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:56:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:56:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:56:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:56:01,540 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:56:01,542 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:56:02,959 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:56:03,043 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:56:03,043 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:56:03,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:03 BoogieIcfgContainer [2023-11-24 23:56:03,044 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:56:03,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:56:03,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:56:03,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:56:03,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:56:00" (1/3) ... [2023-11-24 23:56:03,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd3feb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:03, skipping insertion in model container [2023-11-24 23:56:03,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:00" (2/3) ... [2023-11-24 23:56:03,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd3feb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:03, skipping insertion in model container [2023-11-24 23:56:03,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:03" (3/3) ... [2023-11-24 23:56:03,053 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal1.c [2023-11-24 23:56:03,073 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:56:03,073 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:56:03,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:56:03,126 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;@1a82d52d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:56:03,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:56:03,131 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 23:56:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:56:03,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:03,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:56:03,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:56:03,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:03,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-24 23:56:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:56:03,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630109388] [2023-11-24 23:56:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:03,166 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 23:56:03,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:56:03,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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 23:56:03,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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 23:56:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:03,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-24 23:56:03,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:03,825 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 23:56:03,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:56:03,827 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:56:03,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630109388] [2023-11-24 23:56:03,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630109388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:03,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:03,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:03,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023920083] [2023-11-24 23:56:03,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:03,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:03,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:56:03,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:03,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:56:03,884 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 23:56:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:04,244 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-24 23:56:04,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:56:04,246 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 23:56:04,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:04,254 INFO L225 Difference]: With dead ends: 16 [2023-11-24 23:56:04,254 INFO L226 Difference]: Without dead ends: 9 [2023-11-24 23:56:04,257 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 [2023-11-24 23:56:04,261 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:04,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:56:04,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-24 23:56:04,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-24 23:56:04,301 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 23:56:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-24 23:56:04,304 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-24 23:56:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:04,305 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-24 23:56:04,305 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 23:56:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-24 23:56:04,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:56:04,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:04,306 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-24 23:56:04,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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 23:56:04,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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 23:56:04,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:56:04,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-24 23:56:04,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:56:04,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748609717] [2023-11-24 23:56:04,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:04,514 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 23:56:04,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:56:04,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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 23:56:04,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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 23:56:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:05,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-24 23:56:05,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:05,691 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 23:56:05,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:06,623 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 23:56:06,624 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:56:06,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748609717] [2023-11-24 23:56:06,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748609717] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:06,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1337719014] [2023-11-24 23:56:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:06,625 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:56:06,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:56:06,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:56:06,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-24 23:56:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:08,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-24 23:56:08,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:08,348 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 23:56:08,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:09,488 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 23:56:09,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1337719014] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:09,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367984821] [2023-11-24 23:56:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:09,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:09,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:09,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:09,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:56:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:10,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-24 23:56:10,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:10,483 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 23:56:10,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:11,827 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 23:56:11,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367984821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:11,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-24 23:56:11,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 14 [2023-11-24 23:56:11,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66776570] [2023-11-24 23:56:11,829 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-24 23:56:11,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-24 23:56:11,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:56:11,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-24 23:56:11,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:56:11,832 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 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 23:56:12,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:12,519 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-24 23:56:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:56:12,520 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 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 [2023-11-24 23:56:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:12,521 INFO L225 Difference]: With dead ends: 14 [2023-11-24 23:56:12,521 INFO L226 Difference]: Without dead ends: 12 [2023-11-24 23:56:12,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:56:12,524 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:12,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 13 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:56:12,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-24 23:56:12,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-24 23:56:12,529 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) [2023-11-24 23:56:12,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-24 23:56:12,530 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-24 23:56:12,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:12,530 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-24 23:56:12,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 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 23:56:12,531 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-24 23:56:12,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:56:12,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:12,532 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-24 23:56:12,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:12,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:12,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:13,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:13,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:56:13,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-24 23:56:13,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:56:13,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405028071] [2023-11-24 23:56:13,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 23:56:13,139 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 23:56:13,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:56:13,141 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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 23:56:13,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e73b535-f5ae-4179-9d07-3206f127e33d/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 (6)] Waiting until timeout for monitored process [2023-11-24 23:56:14,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 23:56:14,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:56:14,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 185 conjunts are in the unsatisfiable core [2023-11-24 23:56:14,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:21,457 INFO L327 TraceCheckSpWp]: Computing backward predicates...