./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --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 b85d52a1932fa85f97c362ca60a681b550e6be8c5a2b0a8b0363e5b8a5a0a447 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 15:20:08,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:20:08,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:20:08,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:20:08,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:20:08,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:20:08,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:20:08,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:20:08,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:20:08,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:20:08,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:20:08,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:20:08,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:20:08,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:20:08,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:20:08,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:20:08,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:20:08,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:20:08,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:20:08,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:20:08,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:20:08,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:20:08,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:20:08,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:20:08,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:20:08,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:20:08,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:20:08,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:20:08,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:20:08,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:20:08,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:20:08,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:20:08,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:20:08,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:20:08,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:20:08,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:20:08,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:20:08,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:20:08,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:20:08,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:20:08,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:20:08,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 15:20:08,972 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:20:08,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:20:08,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:20:08,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:20:08,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:20:08,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:20:08,974 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:20:08,974 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:20:08,974 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:20:08,974 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:20:08,974 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:20:08,974 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:20:08,974 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:20:08,975 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:20:08,975 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:20:08,975 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:20:08,975 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:20:08,975 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:20:08,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:20:08,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:20:08,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:20:08,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:20:08,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:20:08,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:20:08,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:20:08,977 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:20:08,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:20:08,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:20:08,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:20:08,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:20:08,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:20:08,978 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:20:08,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:20:08,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:20:08,978 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:20:08,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:20:08,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:20:08,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:20:08,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b85d52a1932fa85f97c362ca60a681b550e6be8c5a2b0a8b0363e5b8a5a0a447 [2022-12-14 15:20:09,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:20:09,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:20:09,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:20:09,183 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:20:09,183 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:20:09,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c [2022-12-14 15:20:11,798 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:20:11,947 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:20:11,947 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c [2022-12-14 15:20:11,957 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/data/252610068/dd94bc78f65e42e0932a48e0db149be4/FLAGf748a4fc9 [2022-12-14 15:20:11,966 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/data/252610068/dd94bc78f65e42e0932a48e0db149be4 [2022-12-14 15:20:11,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:20:11,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:20:11,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:20:11,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:20:11,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:20:11,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:20:11" (1/1) ... [2022-12-14 15:20:11,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e799a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:11, skipping insertion in model container [2022-12-14 15:20:11,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:20:11" (1/1) ... [2022-12-14 15:20:11,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:20:11,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:20:12,089 WARN L237 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_e5373244-0ab5-4c81-a2b2-94718f08c246/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c[1107,1120] [2022-12-14 15:20:12,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:20:12,144 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:20:12,152 WARN L237 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_e5373244-0ab5-4c81-a2b2-94718f08c246/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c[1107,1120] [2022-12-14 15:20:12,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:20:12,194 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:20:12,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12 WrapperNode [2022-12-14 15:20:12,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:20:12,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:20:12,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:20:12,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:20:12,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12" (1/1) ... [2022-12-14 15:20:12,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12" (1/1) ... [2022-12-14 15:20:12,232 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 270 [2022-12-14 15:20:12,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:20:12,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:20:12,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:20:12,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:20:12,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12" (1/1) ... [2022-12-14 15:20:12,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12" (1/1) ... [2022-12-14 15:20:12,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12" (1/1) ... [2022-12-14 15:20:12,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12" (1/1) ... [2022-12-14 15:20:12,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12" (1/1) ... [2022-12-14 15:20:12,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12" (1/1) ... [2022-12-14 15:20:12,253 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12" (1/1) ... [2022-12-14 15:20:12,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12" (1/1) ... [2022-12-14 15:20:12,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:20:12,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:20:12,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:20:12,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:20:12,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12" (1/1) ... [2022-12-14 15:20:12,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:20:12,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:20:12,283 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:20:12,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:20:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:20:12,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:20:12,418 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:20:12,421 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:20:13,055 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:20:13,067 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:20:13,067 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:20:13,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:20:13 BoogieIcfgContainer [2022-12-14 15:20:13,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:20:13,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:20:13,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:20:13,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:20:13,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:20:11" (1/3) ... [2022-12-14 15:20:13,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2d01d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:20:13, skipping insertion in model container [2022-12-14 15:20:13,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:12" (2/3) ... [2022-12-14 15:20:13,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2d01d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:20:13, skipping insertion in model container [2022-12-14 15:20:13,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:20:13" (3/3) ... [2022-12-14 15:20:13,075 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b02.c [2022-12-14 15:20:13,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:20:13,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:20:13,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:20:13,126 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@498f40a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:20:13,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:20:13,129 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) [2022-12-14 15:20:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 15:20:13,133 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:20:13,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 15:20:13,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:20:13,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:20:13,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 15:20:13,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:20:13,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106389268] [2022-12-14 15:20:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:20:13,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:20:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:20:13,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 15:20:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:20:13,398 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 15:20:13,399 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 15:20:13,400 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 15:20:13,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:20:13,405 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 15:20:13,408 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:20:13,420 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 15:20:13,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:20:13 BoogieIcfgContainer [2022-12-14 15:20:13,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:20:13,427 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:20:13,427 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:20:13,428 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:20:13,428 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:20:13" (3/4) ... [2022-12-14 15:20:13,431 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 15:20:13,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:20:13,432 INFO L158 Benchmark]: Toolchain (without parser) took 1462.56ms. Allocated memory was 165.7MB in the beginning and 228.6MB in the end (delta: 62.9MB). Free memory was 126.4MB in the beginning and 148.3MB in the end (delta: -21.9MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. [2022-12-14 15:20:13,432 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 165.7MB. Free memory is still 131.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:20:13,433 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.27ms. Allocated memory is still 165.7MB. Free memory was 126.0MB in the beginning and 110.3MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 15:20:13,433 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.32ms. Allocated memory is still 165.7MB. Free memory was 110.3MB in the beginning and 106.5MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 15:20:13,434 INFO L158 Benchmark]: Boogie Preprocessor took 24.26ms. Allocated memory is still 165.7MB. Free memory was 106.5MB in the beginning and 104.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:20:13,435 INFO L158 Benchmark]: RCFGBuilder took 812.11ms. Allocated memory was 165.7MB in the beginning and 228.6MB in the end (delta: 62.9MB). Free memory was 104.4MB in the beginning and 174.8MB in the end (delta: -70.4MB). Peak memory consumption was 75.9MB. Max. memory is 16.1GB. [2022-12-14 15:20:13,435 INFO L158 Benchmark]: TraceAbstraction took 356.06ms. Allocated memory is still 228.6MB. Free memory was 174.8MB in the beginning and 148.3MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 15:20:13,436 INFO L158 Benchmark]: Witness Printer took 3.69ms. Allocated memory is still 228.6MB. Free memory is still 148.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:20:13,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 165.7MB. Free memory is still 131.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.27ms. Allocated memory is still 165.7MB. Free memory was 126.0MB in the beginning and 110.3MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.32ms. Allocated memory is still 165.7MB. Free memory was 110.3MB in the beginning and 106.5MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.26ms. Allocated memory is still 165.7MB. Free memory was 106.5MB in the beginning and 104.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 812.11ms. Allocated memory was 165.7MB in the beginning and 228.6MB in the end (delta: 62.9MB). Free memory was 104.4MB in the beginning and 174.8MB in the end (delta: -70.4MB). Peak memory consumption was 75.9MB. Max. memory is 16.1GB. * TraceAbstraction took 356.06ms. Allocated memory is still 228.6MB. Free memory was 174.8MB in the beginning and 148.3MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 3.69ms. Allocated memory is still 228.6MB. Free memory is still 148.3MB. 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: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 78, overapproximation of bitwiseOr at line 87, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 32); [L29] const SORT_7 msb_SORT_7 = (SORT_7)1 << (32 - 1); [L31] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 3); [L32] const SORT_12 msb_SORT_12 = (SORT_12)1 << (3 - 1); [L34] const SORT_47 mask_SORT_47 = (SORT_47)-1 >> (sizeof(SORT_47) * 8 - 2); [L35] const SORT_47 msb_SORT_47 = (SORT_47)1 << (2 - 1); [L37] const SORT_1 var_4 = 0; [L38] const SORT_7 var_9 = 1; [L39] const SORT_12 var_13 = 0; [L40] const SORT_1 var_21 = 1; [L41] const SORT_12 var_28 = 2; [L42] const SORT_12 var_31 = 1; [L43] const SORT_12 var_35 = 4; [L44] const SORT_12 var_38 = 6; [L45] const SORT_12 var_41 = 5; [L46] const SORT_12 var_45 = 3; [L47] const SORT_7 var_57 = 0; [L49] SORT_1 input_2; [L50] SORT_1 input_3; [L51] SORT_12 input_55; [L52] SORT_12 input_62; [L53] SORT_12 input_75; [L55] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L56] SORT_12 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_12; [L58] SORT_1 init_6_arg_1 = var_4; [L59] state_5 = init_6_arg_1 [L60] SORT_12 init_15_arg_1 = var_13; [L61] state_14 = init_15_arg_1 VAL [init_15_arg_1=0, init_6_arg_1=0, mask_SORT_1=1, mask_SORT_12=7, mask_SORT_47=3, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_12=4, msb_SORT_47=2, msb_SORT_7=2147483648, state_14=0, state_5=0, var_13=0, var_21=1, var_28=2, var_31=1, var_35=4, var_38=6, var_4=0, var_41=5, var_45=3, var_57=0, var_9=1] [L64] input_2 = __VERIFIER_nondet_uchar() [L65] input_3 = __VERIFIER_nondet_uchar() [L66] input_55 = __VERIFIER_nondet_uchar() [L67] input_62 = __VERIFIER_nondet_uchar() [L68] input_75 = __VERIFIER_nondet_uchar() [L71] SORT_1 var_8_arg_0 = state_5; [L72] var_8_arg_0 = var_8_arg_0 & mask_SORT_1 [L73] SORT_7 var_8 = var_8_arg_0; [L74] SORT_7 var_10_arg_0 = var_8; [L75] SORT_7 var_10_arg_1 = var_9; [L76] SORT_1 var_10 = var_10_arg_0 == var_10_arg_1; [L77] SORT_1 var_11_arg_0 = var_10; [L78] SORT_1 var_11 = ~var_11_arg_0; [L79] SORT_12 var_16_arg_0 = state_14; [L80] var_16_arg_0 = var_16_arg_0 & mask_SORT_12 [L81] SORT_7 var_16 = var_16_arg_0; [L82] SORT_7 var_17_arg_0 = var_16; [L83] SORT_7 var_17_arg_1 = var_9; [L84] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L85] SORT_1 var_18_arg_0 = var_11; [L86] SORT_1 var_18_arg_1 = var_17; [L87] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L88] SORT_1 var_22_arg_0 = var_18; [L89] SORT_1 var_22 = ~var_22_arg_0; [L90] SORT_1 var_23_arg_0 = var_21; [L91] SORT_1 var_23_arg_1 = var_22; [L92] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L93] var_23 = var_23 & mask_SORT_1 [L94] SORT_1 bad_24_arg_0 = var_23; [L95] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] 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: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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 [2022-12-14 15:20:13,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --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 b85d52a1932fa85f97c362ca60a681b550e6be8c5a2b0a8b0363e5b8a5a0a447 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 15:20:14,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:20:14,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:20:14,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:20:14,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:20:14,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:20:14,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:20:14,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:20:14,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:20:14,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:20:14,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:20:14,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:20:14,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:20:14,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:20:14,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:20:14,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:20:14,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:20:14,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:20:14,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:20:14,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:20:15,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:20:15,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:20:15,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:20:15,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:20:15,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:20:15,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:20:15,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:20:15,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:20:15,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:20:15,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:20:15,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:20:15,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:20:15,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:20:15,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:20:15,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:20:15,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:20:15,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:20:15,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:20:15,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:20:15,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:20:15,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:20:15,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 15:20:15,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:20:15,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:20:15,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:20:15,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:20:15,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:20:15,034 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:20:15,034 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:20:15,034 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:20:15,034 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:20:15,034 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:20:15,035 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:20:15,035 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:20:15,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:20:15,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:20:15,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:20:15,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:20:15,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:20:15,036 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 15:20:15,036 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 15:20:15,036 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 15:20:15,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:20:15,036 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:20:15,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:20:15,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:20:15,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 15:20:15,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:20:15,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:20:15,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:20:15,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:20:15,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:20:15,037 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 15:20:15,038 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 15:20:15,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:20:15,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:20:15,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 15:20:15,038 INFO L138 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_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b85d52a1932fa85f97c362ca60a681b550e6be8c5a2b0a8b0363e5b8a5a0a447 [2022-12-14 15:20:15,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:20:15,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:20:15,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:20:15,278 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:20:15,278 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:20:15,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c [2022-12-14 15:20:17,844 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:20:18,008 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:20:18,009 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c [2022-12-14 15:20:18,015 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/data/62ea62aeb/430ece8fc6ba4aa3bee84051fd264750/FLAG21ece4e2c [2022-12-14 15:20:18,025 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/data/62ea62aeb/430ece8fc6ba4aa3bee84051fd264750 [2022-12-14 15:20:18,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:20:18,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:20:18,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:20:18,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:20:18,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:20:18,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c2d1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18, skipping insertion in model container [2022-12-14 15:20:18,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:20:18,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:20:18,149 WARN L237 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_e5373244-0ab5-4c81-a2b2-94718f08c246/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c[1107,1120] [2022-12-14 15:20:18,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:20:18,211 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:20:18,219 WARN L237 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_e5373244-0ab5-4c81-a2b2-94718f08c246/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c[1107,1120] [2022-12-14 15:20:18,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:20:18,267 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:20:18,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18 WrapperNode [2022-12-14 15:20:18,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:20:18,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:20:18,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:20:18,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:20:18,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,319 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 270 [2022-12-14 15:20:18,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:20:18,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:20:18,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:20:18,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:20:18,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,354 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:20:18,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:20:18,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:20:18,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:20:18,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18" (1/1) ... [2022-12-14 15:20:18,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:20:18,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:20:18,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:20:18,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:20:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:20:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:20:18,519 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:20:18,521 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:20:18,791 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:20:18,798 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:20:18,798 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:20:18,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:20:18 BoogieIcfgContainer [2022-12-14 15:20:18,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:20:18,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:20:18,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:20:18,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:20:18,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:20:18" (1/3) ... [2022-12-14 15:20:18,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35953819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:20:18, skipping insertion in model container [2022-12-14 15:20:18,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:20:18" (2/3) ... [2022-12-14 15:20:18,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35953819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:20:18, skipping insertion in model container [2022-12-14 15:20:18,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:20:18" (3/3) ... [2022-12-14 15:20:18,807 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b02.c [2022-12-14 15:20:18,821 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:20:18,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:20:18,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:20:18,864 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=LoopsAndPotentialCycles, 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;@2e3fb708, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:20:18,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:20:18,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:20:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 15:20:18,872 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:20:18,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 15:20:18,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:20:18,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:20:18,877 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 15:20:18,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:20:18,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786774645] [2022-12-14 15:20:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:20:18,886 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 [2022-12-14 15:20:18,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:20:18,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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) [2022-12-14 15:20:18,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:20:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:20:18,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 15:20:18,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:20:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:19,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:20:19,109 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:20:19,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786774645] [2022-12-14 15:20:19,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786774645] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:20:19,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:20:19,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:20:19,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845899110] [2022-12-14 15:20:19,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:20:19,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:20:19,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:20:19,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:20:19,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:20:19,137 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:20:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:20:19,192 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 15:20:19,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:20:19,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 15:20:19,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:20:19,199 INFO L225 Difference]: With dead ends: 20 [2022-12-14 15:20:19,200 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 15:20:19,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:20:19,204 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:20:19,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:20:19,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 15:20:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 15:20:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:20:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 15:20:19,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 15:20:19,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:20:19,226 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 15:20:19,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:20:19,226 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 15:20:19,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 15:20:19,226 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:20:19,226 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 15:20:19,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:20:19,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:20:19,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:20:19,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:20:19,431 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 15:20:19,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:20:19,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873524584] [2022-12-14 15:20:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:20:19,437 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 [2022-12-14 15:20:19,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:20:19,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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) [2022-12-14 15:20:19,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:20:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:20:19,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 74 conjunts are in the unsatisfiable core [2022-12-14 15:20:19,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:20:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:20,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:20:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:33,087 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:20:33,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873524584] [2022-12-14 15:20:33,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873524584] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:20:33,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [593742974] [2022-12-14 15:20:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:20:33,089 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 15:20:33,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 15:20:33,109 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 15:20:33,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 15:20:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:20:33,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 88 conjunts are in the unsatisfiable core [2022-12-14 15:20:33,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:20:33,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:33,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:20:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:42,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [593742974] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:20:42,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548572605] [2022-12-14 15:20:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:20:42,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:20:42,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:20:42,283 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:20:42,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:20:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:20:42,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 70 conjunts are in the unsatisfiable core [2022-12-14 15:20:42,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:20:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:42,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:20:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:43,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548572605] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:20:43,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 15:20:43,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 16 [2022-12-14 15:20:43,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035109550] [2022-12-14 15:20:43,643 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 15:20:43,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 15:20:43,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:20:43,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 15:20:43,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-12-14 15:20:43,645 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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) [2022-12-14 15:20:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:20:43,872 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 15:20:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 15:20:43,872 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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 8 [2022-12-14 15:20:43,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:20:43,873 INFO L225 Difference]: With dead ends: 16 [2022-12-14 15:20:43,873 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 15:20:43,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-14 15:20:43,874 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:20:43,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 31 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:20:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 15:20:43,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 15:20:43,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-12-14 15:20:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 15:20:43,877 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 15:20:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:20:43,877 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 15:20:43,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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) [2022-12-14 15:20:43,877 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 15:20:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 15:20:43,878 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:20:43,878 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 15:20:43,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-12-14 15:20:44,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 15:20:44,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 15:20:44,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 15:20:44,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:20:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:20:44,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 15:20:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:20:44,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028885276] [2022-12-14 15:20:44,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 15:20:44,486 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 [2022-12-14 15:20:44,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:20:44,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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) [2022-12-14 15:20:44,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:20:44,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 15:20:44,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:20:44,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 111 conjunts are in the unsatisfiable core [2022-12-14 15:20:44,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:20:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:20:45,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:21:23,015 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 556 DAG size of output: 258 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:21:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:21:23,835 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:21:23,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028885276] [2022-12-14 15:21:23,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028885276] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:21:23,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [162063470] [2022-12-14 15:21:23,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 15:21:23,836 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 15:21:23,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 15:21:23,836 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 15:21:23,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 15:21:24,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 15:21:24,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:21:24,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 133 conjunts are in the unsatisfiable core [2022-12-14 15:21:24,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:21:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:21:24,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:21:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:21:44,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [162063470] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:21:44,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89910974] [2022-12-14 15:21:44,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 15:21:44,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:21:44,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:21:44,204 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:21:44,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 15:21:44,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 15:21:44,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:21:44,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 134 conjunts are in the unsatisfiable core [2022-12-14 15:21:44,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:21:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:21:46,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:21:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:21:55,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89910974] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:21:55,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 15:21:55,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 21 [2022-12-14 15:21:55,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990405943] [2022-12-14 15:21:55,810 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 15:21:55,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 15:21:55,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:21:55,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 15:21:55,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-12-14 15:21:55,812 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 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) [2022-12-14 15:21:56,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:21:56,279 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-12-14 15:21:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 15:21:56,280 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 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 11 [2022-12-14 15:21:56,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:21:56,280 INFO L225 Difference]: With dead ends: 22 [2022-12-14 15:21:56,280 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 15:21:56,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2022-12-14 15:21:56,281 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:21:56,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 51 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:21:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 15:21:56,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-12-14 15:21:56,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2022-12-14 15:21:56,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-12-14 15:21:56,285 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-12-14 15:21:56,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:21:56,285 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-12-14 15:21:56,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 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) [2022-12-14 15:21:56,285 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-12-14 15:21:56,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 15:21:56,286 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:21:56,286 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-12-14 15:21:56,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 15:21:56,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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)] Forceful destruction successful, exit code 0 [2022-12-14 15:21:56,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 15:21:56,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 15:21:56,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:21:56,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:21:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-12-14 15:21:56,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:21:56,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475303574] [2022-12-14 15:21:56,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:21:56,895 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 [2022-12-14 15:21:56,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:21:56,896 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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) [2022-12-14 15:21:56,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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 (9)] Waiting until timeout for monitored process [2022-12-14 15:21:57,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 15:21:57,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:21:57,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 179 conjunts are in the unsatisfiable core [2022-12-14 15:21:57,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:22:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 15:22:01,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:22:28,048 WARN L233 SmtUtils]: Spent 14.80s on a formula simplification. DAG size of input: 500 DAG size of output: 317 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:22:36,793 WARN L233 SmtUtils]: Spent 7.49s on a formula simplification. DAG size of input: 304 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:24:31,649 WARN L233 SmtUtils]: Spent 1.54m on a formula simplification. DAG size of input: 1898 DAG size of output: 512 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:24:46,054 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 3 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 15:24:46,055 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:24:46,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475303574] [2022-12-14 15:24:46,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475303574] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:24:46,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1868763822] [2022-12-14 15:24:46,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:24:46,055 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 15:24:46,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 15:24:46,056 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 15:24:46,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 15:24:46,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 15:24:46,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:24:46,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 154 conjunts are in the unsatisfiable core [2022-12-14 15:24:46,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:24:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 15:24:50,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:25:15,908 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 522 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:25:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 15:25:19,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1868763822] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:25:19,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226326059] [2022-12-14 15:25:19,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:25:19,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:25:19,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:25:19,344 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:25:19,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 15:25:19,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 15:25:19,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:25:19,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 150 conjunts are in the unsatisfiable core [2022-12-14 15:25:19,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:25:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 15:25:23,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:25:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 15:25:36,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226326059] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:25:36,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 15:25:36,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 9, 8] total 31 [2022-12-14 15:25:36,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3121893] [2022-12-14 15:25:36,147 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 15:25:36,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 15:25:36,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:25:36,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 15:25:36,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=765, Unknown=1, NotChecked=0, Total=930 [2022-12-14 15:25:36,149 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 31 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 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) [2022-12-14 15:25:36,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:25:36,605 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-12-14 15:25:36,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:25:36,607 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 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 17 [2022-12-14 15:25:36,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:25:36,607 INFO L225 Difference]: With dead ends: 18 [2022-12-14 15:25:36,607 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 15:25:36,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 144.6s TimeCoverageRelationStatistics Valid=253, Invalid=868, Unknown=1, NotChecked=0, Total=1122 [2022-12-14 15:25:36,608 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:25:36,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 19 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:25:36,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 15:25:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 15:25:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-12-14 15:25:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 15:25:36,609 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-12-14 15:25:36,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:25:36,609 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 15:25:36,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 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) [2022-12-14 15:25:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 15:25:36,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 15:25:36,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 15:25:36,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 15:25:36,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-12-14 15:25:37,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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 (9)] Forceful destruction successful, exit code 0 [2022-12-14 15:25:37,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:25:37,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 15:25:37,487 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 15:25:37,488 INFO L895 garLoopResultBuilder]: At program point L62-2(lines 62 288) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse1 (= |ULTIMATE.start_main_~var_41~0#1| (_ bv5 8))) (.cse2 (= (_ bv6 8) |ULTIMATE.start_main_~var_38~0#1|)) (.cse3 (= (_ bv1 8) |ULTIMATE.start_main_~var_31~0#1|)) (.cse4 (= (_ bv4 8) |ULTIMATE.start_main_~var_35~0#1|)) (.cse5 (= (_ bv2 8) |ULTIMATE.start_main_~var_28~0#1|)) (.cse6 (= (_ bv1 8) |ULTIMATE.start_main_~var_21~0#1|)) (.cse7 (= |ULTIMATE.start_main_~var_45~0#1| (_ bv3 8))) (.cse8 (= |ULTIMATE.start_main_~mask_SORT_47~0#1| (_ bv3 8))) (.cse9 (= |ULTIMATE.start_main_~var_4~0#1| (_ bv0 8))) (.cse10 (= (_ bv7 8) |ULTIMATE.start_main_~mask_SORT_12~0#1|)) (.cse11 (= |ULTIMATE.start_main_~var_9~0#1| (_ bv1 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_4~0#1|)))))) |ULTIMATE.start_main_~state_5~0#1|) .cse11 (= |ULTIMATE.start_main_~var_13~0#1| |ULTIMATE.start_main_~state_14~0#1|) (= (_ bv0 8) |ULTIMATE.start_main_~state_14~0#1|)) (let ((.cse12 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_12~0#1|))) (and .cse0 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (or (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~state_5~0#1|) ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_1~0#1|)))) |ULTIMATE.start_main_~var_9~0#1|)) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse12 ((_ zero_extend 24) |ULTIMATE.start_main_~state_14~0#1|)))) |ULTIMATE.start_main_~var_9~0#1|)) .cse1 .cse2 .cse3 .cse4 (exists ((|ULTIMATE.start_main_~var_90_arg_1~0#1| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse12 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_90_arg_1~0#1|))))) |ULTIMATE.start_main_~state_14~0#1|)) .cse5 (= |ULTIMATE.start_main_~var_13~0#1| (_ bv0 8)) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11)))) [2022-12-14 15:25:37,488 INFO L899 garLoopResultBuilder]: For program point L62-3(lines 62 288) no Hoare annotation was computed. [2022-12-14 15:25:37,488 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 15:25:37,488 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 290) the Hoare annotation is: false [2022-12-14 15:25:37,488 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 15:25:37,488 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 15:25:37,488 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-12-14 15:25:37,488 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-12-14 15:25:37,488 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-12-14 15:25:37,489 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-12-14 15:25:37,491 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-12-14 15:25:37,493 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:25:37,498 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_90_arg_1~0#1,QUANTIFIED] [2022-12-14 15:25:37,502 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_90_arg_1~0#1,QUANTIFIED] [2022-12-14 15:25:37,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:25:37 BoogieIcfgContainer [2022-12-14 15:25:37,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:25:37,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:25:37,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:25:37,504 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:25:37,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:20:18" (3/4) ... [2022-12-14 15:25:37,506 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 15:25:37,514 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-14 15:25:37,515 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 15:25:37,515 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 15:25:37,531 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((1bv8 == mask_SORT_1 && var_41 == 5bv8) && 6bv8 == var_38) && 1bv8 == var_31) && 4bv8 == var_35) && 2bv8 == var_28) && 1bv8 == var_21) && var_45 == 3bv8) && mask_SORT_47 == 3bv8) && var_4 == 0bv8) && 7bv8 == mask_SORT_12) && ~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(var_4)[7:0])[7:0])[7:0] == state_5) && var_9 == 1bv32) && var_13 == state_14) && 0bv8 == state_14) || (((((((((((((((1bv8 == mask_SORT_1 && cond == 1bv32) && (!(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(state_5), ~zero_extendFrom8To32(mask_SORT_1))[7:0]) == var_9) || ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(mask_SORT_12), ~zero_extendFrom8To32(state_14))[7:0]) == var_9)) && var_41 == 5bv8) && 6bv8 == var_38) && 1bv8 == var_31) && 4bv8 == var_35) && (\exists ULTIMATE.start_main_~var_90_arg_1~0#1 : bv8 :: ~bvand32(~zero_extendFrom8To32(mask_SORT_12), ~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_90_arg_1~0#1)[7:0]))[7:0] == state_14)) && 2bv8 == var_28) && var_13 == 0bv8) && 1bv8 == var_21) && var_45 == 3bv8) && mask_SORT_47 == 3bv8) && var_4 == 0bv8) && 7bv8 == mask_SORT_12) && var_9 == 1bv32) [2022-12-14 15:25:37,547 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 15:25:37,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:25:37,548 INFO L158 Benchmark]: Toolchain (without parser) took 319519.73ms. Allocated memory was 75.5MB in the beginning and 339.7MB in the end (delta: 264.2MB). Free memory was 53.9MB in the beginning and 216.1MB in the end (delta: -162.2MB). Peak memory consumption was 105.2MB. Max. memory is 16.1GB. [2022-12-14 15:25:37,548 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:25:37,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.52ms. Allocated memory is still 75.5MB. Free memory was 53.7MB in the beginning and 37.5MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 15:25:37,548 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.82ms. Allocated memory is still 75.5MB. Free memory was 37.3MB in the beginning and 55.6MB in the end (delta: -18.3MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-12-14 15:25:37,549 INFO L158 Benchmark]: Boogie Preprocessor took 38.45ms. Allocated memory is still 75.5MB. Free memory was 55.6MB in the beginning and 53.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:25:37,549 INFO L158 Benchmark]: RCFGBuilder took 440.03ms. Allocated memory is still 75.5MB. Free memory was 53.5MB in the beginning and 48.1MB in the end (delta: 5.4MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2022-12-14 15:25:37,549 INFO L158 Benchmark]: TraceAbstraction took 318701.39ms. Allocated memory was 75.5MB in the beginning and 339.7MB in the end (delta: 264.2MB). Free memory was 47.5MB in the beginning and 220.3MB in the end (delta: -172.8MB). Peak memory consumption was 90.8MB. Max. memory is 16.1GB. [2022-12-14 15:25:37,549 INFO L158 Benchmark]: Witness Printer took 43.67ms. Allocated memory is still 339.7MB. Free memory was 220.3MB in the beginning and 216.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 15:25:37,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.52ms. Allocated memory is still 75.5MB. Free memory was 53.7MB in the beginning and 37.5MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.82ms. Allocated memory is still 75.5MB. Free memory was 37.3MB in the beginning and 55.6MB in the end (delta: -18.3MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.45ms. Allocated memory is still 75.5MB. Free memory was 55.6MB in the beginning and 53.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 440.03ms. Allocated memory is still 75.5MB. Free memory was 53.5MB in the beginning and 48.1MB in the end (delta: 5.4MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * TraceAbstraction took 318701.39ms. Allocated memory was 75.5MB in the beginning and 339.7MB in the end (delta: 264.2MB). Free memory was 47.5MB in the beginning and 220.3MB in the end (delta: -172.8MB). Peak memory consumption was 90.8MB. Max. memory is 16.1GB. * Witness Printer took 43.67ms. Allocated memory is still 339.7MB. Free memory was 220.3MB in the beginning and 216.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_90_arg_1~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_90_arg_1~0#1,QUANTIFIED] * 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 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 318.6s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 15 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 214 GetRequests, 128 SyntacticMatches, 10 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 166.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 128 HoareAnnotationTreeSize, 2 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 311 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 313.2s InterpolantComputationTime, 113 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 202 ConstructedInterpolants, 85 QuantifiedInterpolants, 106845 SizeOfPredicates, 1188 NumberOfNonLiveVariables, 3665 ConjunctsInSsa, 1115 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 60/210 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 62]: Loop Invariant [2022-12-14 15:25:37,556 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_90_arg_1~0#1,QUANTIFIED] [2022-12-14 15:25:37,556 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_90_arg_1~0#1,QUANTIFIED] Derived loop invariant: ((((((((((((((1bv8 == mask_SORT_1 && var_41 == 5bv8) && 6bv8 == var_38) && 1bv8 == var_31) && 4bv8 == var_35) && 2bv8 == var_28) && 1bv8 == var_21) && var_45 == 3bv8) && mask_SORT_47 == 3bv8) && var_4 == 0bv8) && 7bv8 == mask_SORT_12) && ~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(var_4)[7:0])[7:0])[7:0] == state_5) && var_9 == 1bv32) && var_13 == state_14) && 0bv8 == state_14) || (((((((((((((((1bv8 == mask_SORT_1 && cond == 1bv32) && (!(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(state_5), ~zero_extendFrom8To32(mask_SORT_1))[7:0]) == var_9) || ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(mask_SORT_12), ~zero_extendFrom8To32(state_14))[7:0]) == var_9)) && var_41 == 5bv8) && 6bv8 == var_38) && 1bv8 == var_31) && 4bv8 == var_35) && (\exists ULTIMATE.start_main_~var_90_arg_1~0#1 : bv8 :: ~bvand32(~zero_extendFrom8To32(mask_SORT_12), ~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_90_arg_1~0#1)[7:0]))[7:0] == state_14)) && 2bv8 == var_28) && var_13 == 0bv8) && 1bv8 == var_21) && var_45 == 3bv8) && mask_SORT_47 == 3bv8) && var_4 == 0bv8) && 7bv8 == mask_SORT_12) && var_9 == 1bv32) RESULT: Ultimate proved your program to be correct! [2022-12-14 15:25:37,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5373244-0ab5-4c81-a2b2-94718f08c246/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE