./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.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_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh --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 a68330c23bd8fa71b4f2c1a72229a125c9c545dc64c1e4d5015a2916cb213688 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:21:05,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:21:06,040 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 17:21:06,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:21:06,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:21:06,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:21:06,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:21:06,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:21:06,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:21:06,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:21:06,070 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:21:06,071 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:21:06,071 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:21:06,072 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:21:06,072 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:21:06,073 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:21:06,073 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:21:06,074 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:21:06,074 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:21:06,075 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:21:06,075 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:21:06,079 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:21:06,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:21:06,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:21:06,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:21:06,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:21:06,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:21:06,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:21:06,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:21:06,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:21:06,083 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:21:06,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:21:06,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:21:06,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:21:06,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:21:06,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:21:06,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:21:06,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:21:06,085 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:21:06,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:21:06,085 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:21:06,085 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:21:06,086 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:21:06,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:21:06,086 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_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a68330c23bd8fa71b4f2c1a72229a125c9c545dc64c1e4d5015a2916cb213688 [2023-12-02 17:21:06,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:21:06,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:21:06,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:21:06,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:21:06,328 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:21:06,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c [2023-12-02 17:21:09,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:21:09,295 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:21:09,296 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c [2023-12-02 17:21:09,310 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/data/d0e7679a2/dd2e56cd560f47d4b3dbd945a66e456f/FLAG6f4df6eb6 [2023-12-02 17:21:09,324 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/data/d0e7679a2/dd2e56cd560f47d4b3dbd945a66e456f [2023-12-02 17:21:09,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:21:09,328 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:21:09,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:21:09,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:21:09,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:21:09,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:09,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cfa4a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09, skipping insertion in model container [2023-12-02 17:21:09,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:09,395 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:21:09,564 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_6f0a79a2-9c64-4744-a24c-be7a43373bd0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c[1246,1259] [2023-12-02 17:21:09,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:21:09,766 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:21:09,778 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_6f0a79a2-9c64-4744-a24c-be7a43373bd0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c[1246,1259] [2023-12-02 17:21:09,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:21:09,884 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:21:09,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09 WrapperNode [2023-12-02 17:21:09,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:21:09,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:21:09,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:21:09,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:21:09,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:09,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:10,119 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1928 [2023-12-02 17:21:10,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:21:10,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:21:10,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:21:10,120 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:21:10,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:10,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:10,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:10,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:10,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:10,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:10,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:10,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:10,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:21:10,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:21:10,292 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:21:10,292 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:21:10,293 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09" (1/1) ... [2023-12-02 17:21:10,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:21:10,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:10,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:21:10,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:21:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:21:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:21:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:21:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:21:10,629 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:21:10,631 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:21:11,925 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:21:13,889 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:21:13,889 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:21:13,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:21:13 BoogieIcfgContainer [2023-12-02 17:21:13,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:21:13,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:21:13,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:21:13,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:21:13,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:21:09" (1/3) ... [2023-12-02 17:21:13,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d66b4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:21:13, skipping insertion in model container [2023-12-02 17:21:13,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:09" (2/3) ... [2023-12-02 17:21:13,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d66b4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:21:13, skipping insertion in model container [2023-12-02 17:21:13,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:21:13" (3/3) ... [2023-12-02 17:21:13,900 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_DAIO.c [2023-12-02 17:21:13,921 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:21:13,921 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:21:13,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:21:13,976 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;@79590622, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:21:13,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:21:13,981 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) [2023-12-02 17:21:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 17:21:13,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:13,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 17:21:13,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:21:13,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:13,994 INFO L85 PathProgramCache]: Analyzing trace with hash 30509472, now seen corresponding path program 1 times [2023-12-02 17:21:14,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:14,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660057016] [2023-12-02 17:21:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:14,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:21:14,280 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 17:21:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:21:14,463 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 17:21:14,464 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 17:21:14,466 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 17:21:14,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:21:14,472 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 17:21:14,476 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:21:14,505 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 17:21:14,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:21:14 BoogieIcfgContainer [2023-12-02 17:21:14,522 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:21:14,522 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:21:14,523 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:21:14,523 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:21:14,523 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:21:13" (3/4) ... [2023-12-02 17:21:14,525 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 17:21:14,526 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:21:14,528 INFO L158 Benchmark]: Toolchain (without parser) took 5199.39ms. Allocated memory was 151.0MB in the beginning and 333.4MB in the end (delta: 182.5MB). Free memory was 108.9MB in the beginning and 122.4MB in the end (delta: -13.5MB). Peak memory consumption was 172.0MB. Max. memory is 16.1GB. [2023-12-02 17:21:14,528 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 151.0MB. Free memory is still 121.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:21:14,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 555.83ms. Allocated memory is still 151.0MB. Free memory was 108.8MB in the beginning and 63.8MB in the end (delta: 45.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-12-02 17:21:14,530 INFO L158 Benchmark]: Boogie Procedure Inliner took 233.34ms. Allocated memory was 151.0MB in the beginning and 186.6MB in the end (delta: 35.7MB). Free memory was 63.8MB in the beginning and 129.5MB in the end (delta: -65.8MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2023-12-02 17:21:14,530 INFO L158 Benchmark]: Boogie Preprocessor took 170.90ms. Allocated memory is still 186.6MB. Free memory was 129.5MB in the beginning and 119.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 17:21:14,531 INFO L158 Benchmark]: RCFGBuilder took 3599.52ms. Allocated memory was 186.6MB in the beginning and 333.4MB in the end (delta: 146.8MB). Free memory was 119.1MB in the beginning and 174.9MB in the end (delta: -55.8MB). Peak memory consumption was 136.1MB. Max. memory is 16.1GB. [2023-12-02 17:21:14,531 INFO L158 Benchmark]: TraceAbstraction took 627.88ms. Allocated memory is still 333.4MB. Free memory was 173.8MB in the beginning and 122.4MB in the end (delta: 51.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2023-12-02 17:21:14,532 INFO L158 Benchmark]: Witness Printer took 4.13ms. Allocated memory is still 333.4MB. Free memory was 122.4MB in the beginning and 122.4MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:21:14,535 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 151.0MB. Free memory is still 121.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 555.83ms. Allocated memory is still 151.0MB. Free memory was 108.8MB in the beginning and 63.8MB in the end (delta: 45.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 233.34ms. Allocated memory was 151.0MB in the beginning and 186.6MB in the end (delta: 35.7MB). Free memory was 63.8MB in the beginning and 129.5MB in the end (delta: -65.8MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 170.90ms. Allocated memory is still 186.6MB. Free memory was 129.5MB in the beginning and 119.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 3599.52ms. Allocated memory was 186.6MB in the beginning and 333.4MB in the end (delta: 146.8MB). Free memory was 119.1MB in the beginning and 174.9MB in the end (delta: -55.8MB). Peak memory consumption was 136.1MB. Max. memory is 16.1GB. * TraceAbstraction took 627.88ms. Allocated memory is still 333.4MB. Free memory was 173.8MB in the beginning and 122.4MB in the end (delta: 51.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 4.13ms. Allocated memory is still 333.4MB. Free memory was 122.4MB in the beginning and 122.4MB in the end (delta: 2.7kB). 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 bitwiseOr at line 295, overapproximation of bitwiseAnd at line 192. 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_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 4); [L30] const SORT_10 msb_SORT_10 = (SORT_10)1 << (4 - 1); [L32] const SORT_16 mask_SORT_16 = (SORT_16)-1 >> (sizeof(SORT_16) * 8 - 32); [L33] const SORT_16 msb_SORT_16 = (SORT_16)1 << (32 - 1); [L35] const SORT_32 mask_SORT_32 = (SORT_32)-1 >> (sizeof(SORT_32) * 8 - 7); [L36] const SORT_32 msb_SORT_32 = (SORT_32)1 << (7 - 1); [L38] const SORT_40 mask_SORT_40 = (SORT_40)-1 >> (sizeof(SORT_40) * 8 - 9); [L39] const SORT_40 msb_SORT_40 = (SORT_40)1 << (9 - 1); [L41] const SORT_60 mask_SORT_60 = (SORT_60)-1 >> (sizeof(SORT_60) * 8 - 20); [L42] const SORT_60 msb_SORT_60 = (SORT_60)1 << (20 - 1); [L44] const SORT_357 mask_SORT_357 = (SORT_357)-1 >> (sizeof(SORT_357) * 8 - 2); [L45] const SORT_357 msb_SORT_357 = (SORT_357)1 << (2 - 1); [L47] const SORT_359 mask_SORT_359 = (SORT_359)-1 >> (sizeof(SORT_359) * 8 - 3); [L48] const SORT_359 msb_SORT_359 = (SORT_359)1 << (3 - 1); [L50] const SORT_1 var_13 = 0; [L51] const SORT_16 var_18 = 1; [L52] const SORT_16 var_23 = 0; [L53] const SORT_1 var_28 = 1; [L54] const SORT_32 var_33 = 0; [L55] const SORT_40 var_41 = 0; [L56] const SORT_10 var_48 = 0; [L57] const SORT_16 var_67 = 31; [L58] const SORT_16 var_71 = 32; [L59] const SORT_10 var_74 = 3; [L60] const SORT_16 var_90 = 2; [L61] const SORT_10 var_96 = 5; [L62] const SORT_10 var_117 = 7; [L63] const SORT_10 var_136 = 9; [L64] const SORT_32 var_233 = 4; [L65] const SORT_10 var_235 = 2; [L66] const SORT_32 var_254 = 1; [L67] const SORT_16 var_256 = 191; [L68] const SORT_10 var_259 = 6; [L69] const SORT_10 var_282 = 4; [L70] const SORT_10 var_307 = 8; [L71] const SORT_40 var_315 = 1; [L72] const SORT_10 var_321 = 10; [L73] const SORT_10 var_329 = 1; [L75] SORT_1 input_2; [L76] SORT_1 input_3; [L77] SORT_1 input_4; [L78] SORT_1 input_5; [L79] SORT_1 input_6; [L80] SORT_1 input_7; [L81] SORT_1 input_8; [L82] SORT_1 input_9; [L83] SORT_10 input_11; [L84] SORT_10 input_12; [L85] SORT_1 input_38; [L86] SORT_1 input_44; [L87] SORT_1 input_46; [L88] SORT_1 input_52; [L89] SORT_1 input_54; [L90] SORT_1 input_56; [L91] SORT_1 input_58; [L92] SORT_60 input_61; [L93] SORT_1 input_63; [L94] SORT_1 input_64; [L95] SORT_1 input_65; [L96] SORT_1 input_77; [L97] SORT_1 input_82; [L98] SORT_1 input_86; [L99] SORT_1 input_87; [L100] SORT_1 input_88; [L101] SORT_1 input_99; [L102] SORT_1 input_104; [L103] SORT_1 input_108; [L104] SORT_1 input_109; [L105] SORT_1 input_110; [L106] SORT_1 input_120; [L107] SORT_1 input_125; [L108] SORT_1 input_127; [L109] SORT_1 input_128; [L110] SORT_1 input_129; [L111] SORT_1 input_139; [L112] SORT_1 input_144; [L113] SORT_1 input_151; [L114] SORT_1 input_155; [L115] SORT_1 input_156; [L116] SORT_1 input_157; [L117] SORT_1 input_164; [L118] SORT_1 input_169; [L119] SORT_1 input_173; [L120] SORT_1 input_174; [L121] SORT_1 input_175; [L122] SORT_1 input_182; [L123] SORT_1 input_187; [L124] SORT_1 input_191; [L125] SORT_1 input_192; [L126] SORT_1 input_193; [L127] SORT_1 input_200; [L128] SORT_1 input_205; [L129] SORT_1 input_207; [L130] SORT_1 input_208; [L131] SORT_1 input_209; [L132] SORT_1 input_216; [L133] SORT_1 input_221; [L134] SORT_1 input_228; [L135] SORT_32 input_232; [L136] SORT_32 input_238; [L137] SORT_32 input_242; [L138] SORT_32 input_249; [L139] SORT_32 input_253; [L140] SORT_32 input_262; [L141] SORT_32 input_264; [L142] SORT_32 input_271; [L143] SORT_32 input_278; [L144] SORT_32 input_285; [L145] SORT_32 input_292; [L146] SORT_32 input_296; [L147] SORT_32 input_303; [L148] SORT_32 input_311; [L149] SORT_40 input_324; [L150] SORT_10 input_328; [L151] SORT_10 input_334; [L152] SORT_10 input_340; [L153] SORT_10 input_344; [L154] SORT_10 input_346; [L155] SORT_10 input_350; [L156] SORT_10 input_363; [L157] SORT_10 input_367; [L158] SORT_10 input_369; [L159] SORT_10 input_373; [L160] SORT_10 input_377; [L161] SORT_10 input_381; [L162] SORT_10 input_385; [L163] SORT_10 input_389; [L164] SORT_10 input_406; [L166] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L166] SORT_1 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L167] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L167] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L168] EXPR __VERIFIER_nondet_uchar() & mask_SORT_32 [L168] SORT_32 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_32; [L169] EXPR __VERIFIER_nondet_uchar() & mask_SORT_32 [L169] SORT_32 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_32; [L170] EXPR __VERIFIER_nondet_ushort() & mask_SORT_40 [L170] SORT_40 state_42 = __VERIFIER_nondet_ushort() & mask_SORT_40; [L171] EXPR __VERIFIER_nondet_uchar() & mask_SORT_10 [L171] SORT_10 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L173] SORT_1 init_15_arg_1 = var_13; [L174] state_14 = init_15_arg_1 [L175] SORT_1 init_21_arg_1 = var_13; [L176] state_20 = init_21_arg_1 [L177] SORT_32 init_35_arg_1 = var_33; [L178] state_34 = init_35_arg_1 [L179] SORT_32 init_37_arg_1 = var_33; [L180] state_36 = init_37_arg_1 [L181] SORT_40 init_43_arg_1 = var_41; [L182] state_42 = init_43_arg_1 [L183] SORT_10 init_50_arg_1 = var_48; [L184] state_49 = init_50_arg_1 VAL [init_15_arg_1=0, init_21_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_43_arg_1=0, init_50_arg_1=0, mask_SORT_10=15, mask_SORT_16=4294967295, mask_SORT_1=1, mask_SORT_32=127, mask_SORT_357=3, mask_SORT_359=7, mask_SORT_40=511, mask_SORT_60=1048575, msb_SORT_10=8, msb_SORT_16=2147483648, msb_SORT_1=1, msb_SORT_32=64, msb_SORT_357=2, msb_SORT_359=4, msb_SORT_40=256, msb_SORT_60=524288, state_14=0, state_20=0, state_34=0, state_36=0, state_42=0, state_49=0, var_117=7, var_136=9, var_13=0, var_18=1, var_233=4, var_235=2, var_23=0, var_254=1, var_256=191, var_259=6, var_282=4, var_28=1, var_307=8, var_315=1, var_321=10, var_329=1, var_33=0, var_41=0, var_48=0, var_67=31, var_71=32, var_74=3, var_90=2, var_96=5] [L187] input_2 = __VERIFIER_nondet_uchar() [L188] input_3 = __VERIFIER_nondet_uchar() [L189] input_4 = __VERIFIER_nondet_uchar() [L190] input_5 = __VERIFIER_nondet_uchar() [L191] input_6 = __VERIFIER_nondet_uchar() [L192] EXPR input_6 & mask_SORT_1 [L192] input_6 = input_6 & mask_SORT_1 [L193] input_7 = __VERIFIER_nondet_uchar() [L194] input_8 = __VERIFIER_nondet_uchar() [L195] input_9 = __VERIFIER_nondet_uchar() [L196] EXPR input_9 & mask_SORT_1 [L196] input_9 = input_9 & mask_SORT_1 [L197] input_11 = __VERIFIER_nondet_uchar() [L198] input_12 = __VERIFIER_nondet_uchar() [L199] input_38 = __VERIFIER_nondet_uchar() [L200] input_44 = __VERIFIER_nondet_uchar() [L201] input_46 = __VERIFIER_nondet_uchar() [L202] input_52 = __VERIFIER_nondet_uchar() [L203] input_54 = __VERIFIER_nondet_uchar() [L204] input_56 = __VERIFIER_nondet_uchar() [L205] input_58 = __VERIFIER_nondet_uchar() [L206] input_61 = __VERIFIER_nondet_uint() [L207] input_63 = __VERIFIER_nondet_uchar() [L208] input_64 = __VERIFIER_nondet_uchar() [L209] input_65 = __VERIFIER_nondet_uchar() [L210] input_77 = __VERIFIER_nondet_uchar() [L211] input_82 = __VERIFIER_nondet_uchar() [L212] input_86 = __VERIFIER_nondet_uchar() [L213] input_87 = __VERIFIER_nondet_uchar() [L214] input_88 = __VERIFIER_nondet_uchar() [L215] input_99 = __VERIFIER_nondet_uchar() [L216] input_104 = __VERIFIER_nondet_uchar() [L217] input_108 = __VERIFIER_nondet_uchar() [L218] input_109 = __VERIFIER_nondet_uchar() [L219] input_110 = __VERIFIER_nondet_uchar() [L220] input_120 = __VERIFIER_nondet_uchar() [L221] input_125 = __VERIFIER_nondet_uchar() [L222] input_127 = __VERIFIER_nondet_uchar() [L223] input_128 = __VERIFIER_nondet_uchar() [L224] input_129 = __VERIFIER_nondet_uchar() [L225] input_139 = __VERIFIER_nondet_uchar() [L226] input_144 = __VERIFIER_nondet_uchar() [L227] input_151 = __VERIFIER_nondet_uchar() [L228] input_155 = __VERIFIER_nondet_uchar() [L229] input_156 = __VERIFIER_nondet_uchar() [L230] input_157 = __VERIFIER_nondet_uchar() [L231] input_164 = __VERIFIER_nondet_uchar() [L232] input_169 = __VERIFIER_nondet_uchar() [L233] input_173 = __VERIFIER_nondet_uchar() [L234] input_174 = __VERIFIER_nondet_uchar() [L235] input_175 = __VERIFIER_nondet_uchar() [L236] input_182 = __VERIFIER_nondet_uchar() [L237] input_187 = __VERIFIER_nondet_uchar() [L238] input_191 = __VERIFIER_nondet_uchar() [L239] input_192 = __VERIFIER_nondet_uchar() [L240] input_193 = __VERIFIER_nondet_uchar() [L241] input_200 = __VERIFIER_nondet_uchar() [L242] input_205 = __VERIFIER_nondet_uchar() [L243] input_207 = __VERIFIER_nondet_uchar() [L244] input_208 = __VERIFIER_nondet_uchar() [L245] input_209 = __VERIFIER_nondet_uchar() [L246] input_216 = __VERIFIER_nondet_uchar() [L247] input_221 = __VERIFIER_nondet_uchar() [L248] input_228 = __VERIFIER_nondet_uchar() [L249] input_232 = __VERIFIER_nondet_uchar() [L250] input_238 = __VERIFIER_nondet_uchar() [L251] input_242 = __VERIFIER_nondet_uchar() [L252] input_249 = __VERIFIER_nondet_uchar() [L253] input_253 = __VERIFIER_nondet_uchar() [L254] input_262 = __VERIFIER_nondet_uchar() [L255] input_264 = __VERIFIER_nondet_uchar() [L256] input_271 = __VERIFIER_nondet_uchar() [L257] input_278 = __VERIFIER_nondet_uchar() [L258] input_285 = __VERIFIER_nondet_uchar() [L259] input_292 = __VERIFIER_nondet_uchar() [L260] input_296 = __VERIFIER_nondet_uchar() [L261] input_303 = __VERIFIER_nondet_uchar() [L262] input_311 = __VERIFIER_nondet_uchar() [L263] input_324 = __VERIFIER_nondet_ushort() [L264] input_328 = __VERIFIER_nondet_uchar() [L265] input_334 = __VERIFIER_nondet_uchar() [L266] input_340 = __VERIFIER_nondet_uchar() [L267] input_344 = __VERIFIER_nondet_uchar() [L268] input_346 = __VERIFIER_nondet_uchar() [L269] input_350 = __VERIFIER_nondet_uchar() [L270] input_363 = __VERIFIER_nondet_uchar() [L271] input_367 = __VERIFIER_nondet_uchar() [L272] input_369 = __VERIFIER_nondet_uchar() [L273] input_373 = __VERIFIER_nondet_uchar() [L274] input_377 = __VERIFIER_nondet_uchar() [L275] input_381 = __VERIFIER_nondet_uchar() [L276] input_385 = __VERIFIER_nondet_uchar() [L277] input_389 = __VERIFIER_nondet_uchar() [L278] input_406 = __VERIFIER_nondet_uchar() [L281] SORT_1 var_17_arg_0 = state_14; [L282] EXPR var_17_arg_0 & mask_SORT_1 [L282] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L283] SORT_16 var_17 = var_17_arg_0; [L284] SORT_16 var_19_arg_0 = var_17; [L285] SORT_16 var_19_arg_1 = var_18; [L286] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L287] SORT_1 var_22_arg_0 = state_20; [L288] EXPR var_22_arg_0 & mask_SORT_1 [L288] var_22_arg_0 = var_22_arg_0 & mask_SORT_1 [L289] SORT_16 var_22 = var_22_arg_0; [L290] SORT_16 var_24_arg_0 = var_22; [L291] SORT_16 var_24_arg_1 = var_23; [L292] SORT_1 var_24 = var_24_arg_0 == var_24_arg_1; [L293] SORT_1 var_25_arg_0 = var_19; [L294] SORT_1 var_25_arg_1 = var_24; [L295] EXPR var_25_arg_0 | var_25_arg_1 [L295] SORT_1 var_25 = var_25_arg_0 | var_25_arg_1; [L296] SORT_1 var_29_arg_0 = var_25; [L297] SORT_1 var_29 = ~var_29_arg_0; [L298] SORT_1 var_30_arg_0 = var_28; [L299] SORT_1 var_30_arg_1 = var_29; [L300] EXPR var_30_arg_0 & var_30_arg_1 [L300] SORT_1 var_30 = var_30_arg_0 & var_30_arg_1; [L301] EXPR var_30 & mask_SORT_1 [L301] var_30 = var_30 & mask_SORT_1 [L302] SORT_1 bad_31_arg_0 = var_30; [L303] CALL __VERIFIER_assert(!(bad_31_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: 0.5s, 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, 0.2s 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 [2023-12-02 17:21:14,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh --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 a68330c23bd8fa71b4f2c1a72229a125c9c545dc64c1e4d5015a2916cb213688 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:21:16,472 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:21:16,550 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-12-02 17:21:16,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:21:16,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:21:16,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:21:16,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:21:16,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:21:16,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:21:16,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:21:16,587 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:21:16,588 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:21:16,588 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:21:16,589 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:21:16,589 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:21:16,590 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:21:16,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:21:16,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:21:16,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:21:16,592 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:21:16,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:21:16,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:21:16,594 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:21:16,594 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:21:16,595 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:21:16,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:21:16,596 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:21:16,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:21:16,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:21:16,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:21:16,597 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:21:16,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:21:16,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:21:16,598 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:21:16,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:21:16,599 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:21:16,599 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:21:16,599 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:21:16,600 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:21:16,600 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:21:16,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:21:16,600 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_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a68330c23bd8fa71b4f2c1a72229a125c9c545dc64c1e4d5015a2916cb213688 [2023-12-02 17:21:16,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:21:16,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:21:16,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:21:16,901 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:21:16,901 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:21:16,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c [2023-12-02 17:21:19,714 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:21:19,964 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:21:19,965 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c [2023-12-02 17:21:19,979 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/data/619393163/11930a5d75394a1aa44ab5097616c43d/FLAG7563df35f [2023-12-02 17:21:20,272 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/data/619393163/11930a5d75394a1aa44ab5097616c43d [2023-12-02 17:21:20,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:21:20,275 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:21:20,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:21:20,276 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:21:20,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:21:20,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:20,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4669eaa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20, skipping insertion in model container [2023-12-02 17:21:20,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:20,351 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:21:20,534 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_6f0a79a2-9c64-4744-a24c-be7a43373bd0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c[1246,1259] [2023-12-02 17:21:20,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:21:20,745 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:21:20,755 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_6f0a79a2-9c64-4744-a24c-be7a43373bd0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_DAIO.c[1246,1259] [2023-12-02 17:21:20,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:21:20,857 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:21:20,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20 WrapperNode [2023-12-02 17:21:20,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:21:20,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:21:20,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:21:20,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:21:20,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:20,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:20,986 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1378 [2023-12-02 17:21:20,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:21:20,987 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:21:20,987 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:21:20,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:21:20,997 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:20,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:21,006 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:21,006 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:21,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:21,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:21,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:21,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:21,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:21:21,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:21:21,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:21:21,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:21:21,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20" (1/1) ... [2023-12-02 17:21:21,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:21:21,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:21,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:21:21,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:21:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:21:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:21:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:21:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:21:21,410 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:21:21,413 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:21:22,916 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:21:22,994 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:21:22,994 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:21:22,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:21:22 BoogieIcfgContainer [2023-12-02 17:21:22,995 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:21:22,997 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:21:22,997 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:21:23,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:21:23,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:21:20" (1/3) ... [2023-12-02 17:21:23,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f539f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:21:23, skipping insertion in model container [2023-12-02 17:21:23,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:20" (2/3) ... [2023-12-02 17:21:23,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f539f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:21:23, skipping insertion in model container [2023-12-02 17:21:23,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:21:22" (3/3) ... [2023-12-02 17:21:23,003 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_DAIO.c [2023-12-02 17:21:23,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:21:23,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:21:23,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:21:23,072 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;@47d7e72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:21:23,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:21:23,076 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) [2023-12-02 17:21:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 17:21:23,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:23,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 17:21:23,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:21:23,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:23,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-02 17:21:23,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:21:23,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832795566] [2023-12-02 17:21:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:23,102 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 [2023-12-02 17:21:23,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:21:23,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:21:23,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:21:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:23,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 17:21:23,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:21:23,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:21:23,643 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:21:23,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832795566] [2023-12-02 17:21:23,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832795566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:21:23,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:21:23,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:21:23,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131969017] [2023-12-02 17:21:23,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:21:23,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:21:23,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:21:23,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:21:23,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:21:23,681 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) [2023-12-02 17:21:24,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:24,008 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-02 17:21:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:21:24,010 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 [2023-12-02 17:21:24,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:24,015 INFO L225 Difference]: With dead ends: 16 [2023-12-02 17:21:24,015 INFO L226 Difference]: Without dead ends: 9 [2023-12-02 17:21:24,018 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 [2023-12-02 17:21:24,021 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 [2023-12-02 17:21:24,022 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] [2023-12-02 17:21:24,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-02 17:21:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-02 17:21:24,060 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) [2023-12-02 17:21:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-02 17:21:24,062 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-02 17:21:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:24,062 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-02 17:21:24,062 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) [2023-12-02 17:21:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-02 17:21:24,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 17:21:24,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:24,063 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-02 17:21:24,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:21:24,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:21:24,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:21:24,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:24,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-02 17:21:24,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:21:24,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738993575] [2023-12-02 17:21:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:24,270 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 [2023-12-02 17:21:24,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:21:24,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:21:24,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:21:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:25,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-02 17:21:25,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:21:26,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:21:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:21:39,291 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:21:39,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738993575] [2023-12-02 17:21:39,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738993575] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:21:39,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [373249320] [2023-12-02 17:21:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:39,291 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:21:39,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:21:39,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:21:39,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 17:21:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:40,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-02 17:21:40,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:21:40,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:21:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:21:49,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [373249320] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:21:49,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612154262] [2023-12-02 17:21:49,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:49,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:49,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:49,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:21:49,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:21:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:50,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-02 17:21:50,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:21:50,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:22:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:22:00,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612154262] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:22:00,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 17:22:00,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4, 4, 5, 5] total 12 [2023-12-02 17:22:00,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764522686] [2023-12-02 17:22:00,277 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 17:22:00,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 17:22:00,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:22:00,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 17:22:00,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:22:00,279 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 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) [2023-12-02 17:22:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:22:00,650 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-02 17:22:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:22:00,651 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 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 [2023-12-02 17:22:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:22:00,651 INFO L225 Difference]: With dead ends: 14 [2023-12-02 17:22:00,651 INFO L226 Difference]: Without dead ends: 12 [2023-12-02 17:22:00,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-02 17:22:00,653 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:22:00,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:22:00,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-02 17:22:00,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-02 17:22:00,656 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) [2023-12-02 17:22:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 17:22:00,656 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-02 17:22:00,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:22:00,656 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 17:22:00,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 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) [2023-12-02 17:22:00,657 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 17:22:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 17:22:00,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:22:00,657 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-02 17:22:00,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 17:22:00,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:22:01,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 17:22:01,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:22:01,259 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:22:01,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:22:01,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-02 17:22:01,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:22:01,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451837696] [2023-12-02 17:22:01,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:22:01,263 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 [2023-12-02 17:22:01,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:22:01,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 17:22:01,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0a79a2-9c64-4744-a24c-be7a43373bd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 17:22:05,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:22:05,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:22:05,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 197 conjunts are in the unsatisfiable core [2023-12-02 17:22:05,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:22:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:22:07,776 INFO L327 TraceCheckSpWp]: Computing backward predicates...