./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2 --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 927306cfdb34082f032dbe87a24c6d688e2dda4e8fb165835d54bffc8f03e27e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:37:17,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:37:17,614 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 12:37:17,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:37:17,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:37:17,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:37:17,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:37:17,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:37:17,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:37:17,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:37:17,661 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:37:17,662 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:37:17,662 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:37:17,663 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:37:17,663 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:37:17,663 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:37:17,666 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:37:17,669 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:37:17,669 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:37:17,669 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:37:17,670 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:37:17,670 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:37:17,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:37:17,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:37:17,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:37:17,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:37:17,672 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:37:17,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:37:17,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:37:17,673 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:37:17,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:37:17,674 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:37:17,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:37:17,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:37:17,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:37:17,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:17,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:37:17,678 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:37:17,678 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:37:17,678 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:37:17,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:37:17,679 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:37:17,679 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:37:17,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:37:17,680 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_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 927306cfdb34082f032dbe87a24c6d688e2dda4e8fb165835d54bffc8f03e27e [2024-11-02 12:37:17,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:37:18,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:37:18,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:37:18,014 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:37:18,015 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:37:18,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c Unable to find full path for "g++" [2024-11-02 12:37:20,186 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:37:20,414 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:37:20,415 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c [2024-11-02 12:37:20,429 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/data/5633c4347/151183569dae43d29914fd94b83fbc0d/FLAG54a952378 [2024-11-02 12:37:20,755 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/data/5633c4347/151183569dae43d29914fd94b83fbc0d [2024-11-02 12:37:20,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:37:20,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:37:20,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:20,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:37:20,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:37:20,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:20" (1/1) ... [2024-11-02 12:37:20,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d364ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:20, skipping insertion in model container [2024-11-02 12:37:20,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:20" (1/1) ... [2024-11-02 12:37:20,808 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:37:20,998 WARN L251 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_c30f9a68-dc35-4c95-8007-511cbbd37a8e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c[1250,1263] [2024-11-02 12:37:21,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:21,115 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:37:21,127 WARN L251 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_c30f9a68-dc35-4c95-8007-511cbbd37a8e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c[1250,1263] [2024-11-02 12:37:21,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:21,203 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:37:21,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21 WrapperNode [2024-11-02 12:37:21,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:21,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:21,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:37:21,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:37:21,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21" (1/1) ... [2024-11-02 12:37:21,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21" (1/1) ... [2024-11-02 12:37:21,307 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 295 [2024-11-02 12:37:21,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:21,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:37:21,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:37:21,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:37:21,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21" (1/1) ... [2024-11-02 12:37:21,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21" (1/1) ... [2024-11-02 12:37:21,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21" (1/1) ... [2024-11-02 12:37:21,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21" (1/1) ... [2024-11-02 12:37:21,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21" (1/1) ... [2024-11-02 12:37:21,348 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21" (1/1) ... [2024-11-02 12:37:21,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21" (1/1) ... [2024-11-02 12:37:21,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21" (1/1) ... [2024-11-02 12:37:21,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:37:21,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:37:21,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:37:21,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:37:21,389 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21" (1/1) ... [2024-11-02 12:37:21,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:21,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:37:21,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:37:21,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:37:21,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:37:21,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:37:21,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:37:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:37:21,652 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:37:21,656 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:37:22,277 INFO L? ?]: Removed 168 outVars from TransFormulas that were not future-live. [2024-11-02 12:37:22,277 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:37:22,786 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:37:22,786 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:37:22,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:22 BoogieIcfgContainer [2024-11-02 12:37:22,787 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:37:22,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:37:22,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:37:22,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:37:22,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:37:20" (1/3) ... [2024-11-02 12:37:22,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3ca3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:22, skipping insertion in model container [2024-11-02 12:37:22,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:21" (2/3) ... [2024-11-02 12:37:22,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3ca3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:22, skipping insertion in model container [2024-11-02 12:37:22,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:22" (3/3) ... [2024-11-02 12:37:22,796 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.diagonal_v.c [2024-11-02 12:37:22,814 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:37:22,814 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:37:22,880 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:37:22,888 INFO L333 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, 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;@65a7aeb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:37:22,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:37:22,892 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) [2024-11-02 12:37:22,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:37:22,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:22,901 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:37:22,901 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:22,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:22,909 INFO L85 PathProgramCache]: Analyzing trace with hash 11232200, now seen corresponding path program 1 times [2024-11-02 12:37:22,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:22,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314176724] [2024-11-02 12:37:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:22,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:23,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:37:23,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314176724] [2024-11-02 12:37:23,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314176724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:23,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:23,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:37:23,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276966391] [2024-11-02 12:37:23,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:23,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:37:23,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:37:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:37:23,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:37:23,892 INFO L87 Difference]: Start difference. First 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) 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) [2024-11-02 12:37:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:24,046 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2024-11-02 12:37:24,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:37:24,050 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 [2024-11-02 12:37:24,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:24,059 INFO L225 Difference]: With dead ends: 15 [2024-11-02 12:37:24,059 INFO L226 Difference]: Without dead ends: 9 [2024-11-02 12:37:24,063 INFO L431 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 [2024-11-02 12:37:24,070 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:24,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:37:24,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-02 12:37:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2024-11-02 12:37:24,105 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) [2024-11-02 12:37:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-11-02 12:37:24,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2024-11-02 12:37:24,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:24,109 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-11-02 12:37:24,109 INFO L472 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) [2024-11-02 12:37:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-11-02 12:37:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:37:24,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:24,111 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-02 12:37:24,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:37:24,112 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:24,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash -375393199, now seen corresponding path program 1 times [2024-11-02 12:37:24,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:24,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097238994] [2024-11-02 12:37:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:24,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:37:24,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:37:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:37:24,836 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:37:24,836 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:37:24,838 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:37:24,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:37:24,844 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-02 12:37:24,886 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:37:24,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:37:24 BoogieIcfgContainer [2024-11-02 12:37:24,894 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:37:24,894 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:37:24,894 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:37:24,896 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:37:24,897 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:22" (3/4) ... [2024-11-02 12:37:24,901 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-02 12:37:24,902 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:37:24,903 INFO L158 Benchmark]: Toolchain (without parser) took 4143.75ms. Allocated memory was 140.5MB in the beginning and 255.9MB in the end (delta: 115.3MB). Free memory was 97.5MB in the beginning and 108.2MB in the end (delta: -10.7MB). Peak memory consumption was 106.3MB. Max. memory is 16.1GB. [2024-11-02 12:37:24,904 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 140.5MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:37:24,905 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.05ms. Allocated memory is still 140.5MB. Free memory was 97.2MB in the beginning and 81.0MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-02 12:37:24,907 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.31ms. Allocated memory is still 140.5MB. Free memory was 81.0MB in the beginning and 73.8MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-02 12:37:24,908 INFO L158 Benchmark]: Boogie Preprocessor took 56.77ms. Allocated memory is still 140.5MB. Free memory was 73.8MB in the beginning and 70.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:37:24,908 INFO L158 Benchmark]: RCFGBuilder took 1420.30ms. Allocated memory was 140.5MB in the beginning and 195.0MB in the end (delta: 54.5MB). Free memory was 70.8MB in the beginning and 110.1MB in the end (delta: -39.2MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2024-11-02 12:37:24,909 INFO L158 Benchmark]: TraceAbstraction took 2104.69ms. Allocated memory was 195.0MB in the beginning and 255.9MB in the end (delta: 60.8MB). Free memory was 109.0MB in the beginning and 108.2MB in the end (delta: 807.0kB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. [2024-11-02 12:37:24,909 INFO L158 Benchmark]: Witness Printer took 8.02ms. Allocated memory is still 255.9MB. Free memory is still 108.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:37:24,915 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 140.5MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 443.05ms. Allocated memory is still 140.5MB. Free memory was 97.2MB in the beginning and 81.0MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.31ms. Allocated memory is still 140.5MB. Free memory was 81.0MB in the beginning and 73.8MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.77ms. Allocated memory is still 140.5MB. Free memory was 73.8MB in the beginning and 70.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1420.30ms. Allocated memory was 140.5MB in the beginning and 195.0MB in the end (delta: 54.5MB). Free memory was 70.8MB in the beginning and 110.1MB in the end (delta: -39.2MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2104.69ms. Allocated memory was 195.0MB in the beginning and 255.9MB in the end (delta: 60.8MB). Free memory was 109.0MB in the beginning and 108.2MB in the end (delta: 807.0kB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. * Witness Printer took 8.02ms. Allocated memory is still 255.9MB. Free memory is still 108.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of shiftRight at line 85, overapproximation of bitwiseOr at line 110, overapproximation of bitwiseAnd at line 66. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L32] const SORT_28 mask_SORT_28 = (SORT_28)-1 >> (sizeof(SORT_28) * 8 - 32); [L33] const SORT_28 msb_SORT_28 = (SORT_28)1 << (32 - 1); [L35] const SORT_4 var_5 = 1; [L36] const SORT_4 var_8 = 0; [L37] const SORT_1 var_15 = 1; [L38] const SORT_4 var_22 = 15; [L39] const SORT_28 var_30 = 1; [L41] SORT_1 input_2; [L42] SORT_1 input_3; [L44] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 [L44] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L45] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 [L45] SORT_4 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L47] SORT_4 init_7_arg_1 = var_5; [L48] state_6 = init_7_arg_1 [L49] SORT_4 init_10_arg_1 = var_8; [L50] state_9 = init_10_arg_1 VAL [mask_SORT_1=1, mask_SORT_4=15, state_6=1, state_9=0, var_15=1, var_22=15, var_30=1, var_5=1] [L53] input_2 = __VERIFIER_nondet_uchar() [L54] input_3 = __VERIFIER_nondet_uchar() [L57] SORT_4 var_11_arg_0 = state_6; [L58] SORT_4 var_11_arg_1 = state_9; [L59] SORT_1 var_11 = var_11_arg_0 < var_11_arg_1; [L60] SORT_1 var_12_arg_0 = var_11; [L61] SORT_1 var_12 = ~var_12_arg_0; [L62] SORT_1 var_16_arg_0 = var_12; [L63] SORT_1 var_16 = ~var_16_arg_0; [L64] SORT_1 var_17_arg_0 = var_15; [L65] SORT_1 var_17_arg_1 = var_16; [L66] EXPR var_17_arg_0 & var_17_arg_1 [L66] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L67] EXPR var_17 & mask_SORT_1 [L67] var_17 = var_17 & mask_SORT_1 [L68] SORT_1 bad_18_arg_0 = var_17; [L69] CALL __VERIFIER_assert(!(bad_18_arg_0)) [L21] COND FALSE !(!(cond)) [L69] RET __VERIFIER_assert(!(bad_18_arg_0)) [L71] SORT_1 var_37_arg_0 = input_3; [L72] SORT_1 var_37 = ~var_37_arg_0; [L73] SORT_4 var_38_arg_0 = state_6; [L74] SORT_4 var_38_arg_1 = state_9; [L75] SORT_1 var_38 = var_38_arg_0 > var_38_arg_1; [L76] SORT_1 var_39_arg_0 = var_37; [L77] SORT_1 var_39_arg_1 = var_38; [L78] EXPR var_39_arg_0 & var_39_arg_1 [L78] SORT_1 var_39 = var_39_arg_0 & var_39_arg_1; [L79] EXPR var_39 & mask_SORT_1 [L79] var_39 = var_39 & mask_SORT_1 [L80] SORT_4 var_29_arg_0 = var_22; [L81] EXPR var_29_arg_0 & mask_SORT_4 [L81] var_29_arg_0 = var_29_arg_0 & mask_SORT_4 [L82] SORT_28 var_29 = var_29_arg_0; [L83] SORT_28 var_31_arg_0 = var_29; [L84] SORT_28 var_31_arg_1 = var_30; [L85] EXPR var_31_arg_0 >> var_31_arg_1 [L85] SORT_28 var_31 = var_31_arg_0 >> var_31_arg_1; [L86] SORT_28 var_32_arg_0 = var_31; [L87] SORT_4 var_32 = var_32_arg_0 >> 0; [L88] SORT_4 var_33_arg_0 = state_6; [L89] EXPR var_33_arg_0 & mask_SORT_4 [L89] var_33_arg_0 = var_33_arg_0 & mask_SORT_4 [L90] SORT_28 var_33 = var_33_arg_0; [L91] SORT_28 var_34_arg_0 = var_33; [L92] SORT_28 var_34_arg_1 = var_30; [L93] EXPR var_34_arg_0 >> var_34_arg_1 [L93] SORT_28 var_34 = var_34_arg_0 >> var_34_arg_1; [L94] SORT_28 var_35_arg_0 = var_34; [L95] SORT_4 var_35 = var_35_arg_0 >> 0; [L96] SORT_4 var_36_arg_0 = var_32; [L97] SORT_4 var_36_arg_1 = var_35; [L98] SORT_4 var_36 = var_36_arg_0 + var_36_arg_1; [L99] SORT_4 var_26_arg_0 = state_6; [L100] SORT_4 var_26_arg_1 = state_9; [L101] SORT_1 var_26 = var_26_arg_0 < var_26_arg_1; [L102] SORT_4 var_21_arg_0 = state_9; [L103] SORT_4 var_21_arg_1 = state_6; [L104] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L105] SORT_4 var_23_arg_0 = state_6; [L106] SORT_4 var_23_arg_1 = var_22; [L107] SORT_1 var_23 = var_23_arg_0 != var_23_arg_1; [L108] SORT_1 var_24_arg_0 = var_21; [L109] SORT_1 var_24_arg_1 = var_23; [L110] EXPR var_24_arg_0 | var_24_arg_1 [L110] SORT_1 var_24 = var_24_arg_0 | var_24_arg_1; [L111] EXPR var_24 & mask_SORT_1 [L111] var_24 = var_24 & mask_SORT_1 [L112] SORT_4 var_20_arg_0 = state_6; [L113] SORT_4 var_20_arg_1 = var_5; [L114] SORT_4 var_20 = var_20_arg_0 + var_20_arg_1; [L115] SORT_1 var_25_arg_0 = var_24; [L116] SORT_4 var_25_arg_1 = var_20; [L117] SORT_4 var_25_arg_2 = state_9; [L118] SORT_4 var_25 = var_25_arg_0 ? var_25_arg_1 : var_25_arg_2; [L119] SORT_1 var_27_arg_0 = var_26; [L120] SORT_4 var_27_arg_1 = state_6; [L121] SORT_4 var_27_arg_2 = var_25; [L122] SORT_4 var_27 = var_27_arg_0 ? var_27_arg_1 : var_27_arg_2; [L123] SORT_1 var_40_arg_0 = var_39; [L124] SORT_4 var_40_arg_1 = var_36; [L125] SORT_4 var_40_arg_2 = var_27; [L126] SORT_4 var_40 = var_40_arg_0 ? var_40_arg_1 : var_40_arg_2; [L127] EXPR var_40 & mask_SORT_4 [L127] var_40 = var_40 & mask_SORT_4 [L128] SORT_4 next_41_arg_1 = var_40; [L129] SORT_1 var_48_arg_0 = input_3; [L130] SORT_1 var_48 = ~var_48_arg_0; [L131] SORT_4 var_49_arg_0 = state_6; [L132] SORT_4 var_49_arg_1 = state_9; [L133] SORT_1 var_49 = var_49_arg_0 > var_49_arg_1; [L134] SORT_1 var_50_arg_0 = var_48; [L135] SORT_1 var_50_arg_1 = var_49; [L136] EXPR var_50_arg_0 & var_50_arg_1 [L136] SORT_1 var_50 = var_50_arg_0 & var_50_arg_1; [L137] EXPR var_50 & mask_SORT_1 [L137] var_50 = var_50 & mask_SORT_1 [L138] SORT_4 var_43_arg_0 = state_6; [L139] SORT_4 var_43_arg_1 = state_9; [L140] SORT_1 var_43 = var_43_arg_0 > var_43_arg_1; [L141] SORT_1 var_44_arg_0 = var_43; [L142] SORT_1 var_44 = ~var_44_arg_0; [L143] SORT_4 var_45_arg_0 = state_6; [L144] SORT_4 var_45_arg_1 = var_22; [L145] SORT_1 var_45 = var_45_arg_0 != var_45_arg_1; [L146] SORT_1 var_46_arg_0 = var_44; [L147] SORT_1 var_46_arg_1 = var_45; [L148] EXPR var_46_arg_0 | var_46_arg_1 [L148] SORT_1 var_46 = var_46_arg_0 | var_46_arg_1; [L149] EXPR var_46 & mask_SORT_1 [L149] var_46 = var_46 & mask_SORT_1 [L150] SORT_4 var_42_arg_0 = state_9; [L151] SORT_4 var_42_arg_1 = var_5; [L152] SORT_4 var_42 = var_42_arg_0 + var_42_arg_1; [L153] SORT_1 var_47_arg_0 = var_46; [L154] SORT_4 var_47_arg_1 = var_42; [L155] SORT_4 var_47_arg_2 = state_6; [L156] SORT_4 var_47 = var_47_arg_0 ? var_47_arg_1 : var_47_arg_2; [L157] SORT_1 var_51_arg_0 = var_50; [L158] SORT_4 var_51_arg_1 = state_9; [L159] SORT_4 var_51_arg_2 = var_47; [L160] SORT_4 var_51 = var_51_arg_0 ? var_51_arg_1 : var_51_arg_2; [L161] EXPR var_51 & mask_SORT_4 [L161] var_51 = var_51 & mask_SORT_4 [L162] SORT_4 next_52_arg_1 = var_51; [L164] state_6 = next_41_arg_1 [L165] state_9 = next_52_arg_1 [L53] input_2 = __VERIFIER_nondet_uchar() [L54] input_3 = __VERIFIER_nondet_uchar() [L57] SORT_4 var_11_arg_0 = state_6; [L58] SORT_4 var_11_arg_1 = state_9; [L59] SORT_1 var_11 = var_11_arg_0 < var_11_arg_1; [L60] SORT_1 var_12_arg_0 = var_11; [L61] SORT_1 var_12 = ~var_12_arg_0; [L62] SORT_1 var_16_arg_0 = var_12; [L63] SORT_1 var_16 = ~var_16_arg_0; [L64] SORT_1 var_17_arg_0 = var_15; [L65] SORT_1 var_17_arg_1 = var_16; [L66] EXPR var_17_arg_0 & var_17_arg_1 [L66] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L67] EXPR var_17 & mask_SORT_1 [L67] var_17 = var_17 & mask_SORT_1 [L68] SORT_1 bad_18_arg_0 = var_17; [L69] CALL __VERIFIER_assert(!(bad_18_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 2 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2024-11-02 12:37:24,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2 --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 927306cfdb34082f032dbe87a24c6d688e2dda4e8fb165835d54bffc8f03e27e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:37:27,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:37:27,677 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2024-11-02 12:37:27,686 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:37:27,687 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:37:27,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:37:27,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:37:27,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:37:27,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:37:27,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:37:27,745 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:37:27,746 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:37:27,746 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:37:27,747 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:37:27,747 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:37:27,747 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:37:27,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:37:27,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:37:27,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:37:27,752 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:37:27,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:37:27,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:37:27,758 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:37:27,759 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 12:37:27,759 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:37:27,759 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 12:37:27,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:37:27,760 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:37:27,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:37:27,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 12:37:27,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:37:27,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:37:27,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:27,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:37:27,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:37:27,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:37:27,764 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-02 12:37:27,765 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 12:37:27,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:37:27,765 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:37:27,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:37:27,768 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_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 927306cfdb34082f032dbe87a24c6d688e2dda4e8fb165835d54bffc8f03e27e [2024-11-02 12:37:28,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:37:28,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:37:28,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:37:28,233 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:37:28,234 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:37:28,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c Unable to find full path for "g++" [2024-11-02 12:37:30,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:37:30,980 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:37:30,980 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c [2024-11-02 12:37:31,000 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/data/2e96126ff/f6e767e14cdf4c48a3819144281f45fa/FLAGe178a125a [2024-11-02 12:37:31,025 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/data/2e96126ff/f6e767e14cdf4c48a3819144281f45fa [2024-11-02 12:37:31,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:37:31,031 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:37:31,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:31,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:37:31,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:37:31,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eed16fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31, skipping insertion in model container [2024-11-02 12:37:31,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,094 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:37:31,355 WARN L251 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_c30f9a68-dc35-4c95-8007-511cbbd37a8e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c[1250,1263] [2024-11-02 12:37:31,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:31,488 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:37:31,505 WARN L251 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_c30f9a68-dc35-4c95-8007-511cbbd37a8e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.diagonal_v.c[1250,1263] [2024-11-02 12:37:31,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:31,638 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:37:31,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31 WrapperNode [2024-11-02 12:37:31,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:31,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:31,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:37:31,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:37:31,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,703 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 155 [2024-11-02 12:37:31,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:31,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:37:31,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:37:31,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:37:31,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:37:31,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:37:31,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:37:31,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:37:31,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31" (1/1) ... [2024-11-02 12:37:31,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:31,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:37:31,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:37:31,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:37:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:37:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-02 12:37:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:37:31,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:37:31,990 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:37:31,993 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:37:32,364 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-02 12:37:32,369 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:37:32,388 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:37:32,391 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:37:32,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:32 BoogieIcfgContainer [2024-11-02 12:37:32,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:37:32,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:37:32,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:37:32,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:37:32,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:37:31" (1/3) ... [2024-11-02 12:37:32,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278a0907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:32, skipping insertion in model container [2024-11-02 12:37:32,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:31" (2/3) ... [2024-11-02 12:37:32,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278a0907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:32, skipping insertion in model container [2024-11-02 12:37:32,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:32" (3/3) ... [2024-11-02 12:37:32,401 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.diagonal_v.c [2024-11-02 12:37:32,420 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:37:32,420 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:37:32,492 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:37:32,498 INFO L333 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, 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;@15614258, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:37:32,499 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:37:32,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2024-11-02 12:37:32,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:37:32,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:32,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 12:37:32,511 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:32,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:32,519 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-02 12:37:32,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:32,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525366494] [2024-11-02 12:37:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:32,535 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 [2024-11-02 12:37:32,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:32,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:32,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:32,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-02 12:37:32,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:32,939 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:37:32,940 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:37:32,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525366494] [2024-11-02 12:37:32,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525366494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:37:32,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:37:32,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:37:32,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354036339] [2024-11-02 12:37:32,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:37:32,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:37:32,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:37:32,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:37:32,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:37:32,981 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-11-02 12:37:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:37:33,042 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-02 12:37:33,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:37:33,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2024-11-02 12:37:33,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:37:33,055 INFO L225 Difference]: With dead ends: 18 [2024-11-02 12:37:33,055 INFO L226 Difference]: Without dead ends: 10 [2024-11-02 12:37:33,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:37:33,065 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:37:33,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:37:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-02 12:37:33,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-02 12:37:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2024-11-02 12:37:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-02 12:37:33,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-02 12:37:33,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:37:33,108 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-02 12:37:33,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-11-02 12:37:33,109 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-02 12:37:33,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:37:33,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:33,111 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-02 12:37:33,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:33,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:33,312 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:33,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:33,313 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-02 12:37:33,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:37:33,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767160368] [2024-11-02 12:37:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:33,316 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 [2024-11-02 12:37:33,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:37:33,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:37:33,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:37:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:33,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-02 12:37:33,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:34,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:37:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:41,357 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:37:41,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767160368] [2024-11-02 12:37:41,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767160368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:37:41,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [163490299] [2024-11-02 12:37:41,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:41,358 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-02 12:37:41,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/cvc4 [2024-11-02 12:37:41,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-02 12:37:41,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-02 12:37:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:41,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-02 12:37:41,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:37:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:41,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:37:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:37:46,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [163490299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:37:46,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337871472] [2024-11-02 12:37:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:46,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:37:46,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:37:46,955 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:37:46,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30f9a68-dc35-4c95-8007-511cbbd37a8e/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:37:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:37:47,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-02 12:37:47,064 INFO L278 TraceCheckSpWp]: Computing forward predicates...