./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.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_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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_d994c00d-d425-4c90-a1d6-87291015f970/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 7907d012b9c764bd623ba97e3fe681984ff5e165fb3f5820b36269ce719d1dfd --- 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 08:01:09,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:01:09,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:01:09,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:01:09,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:01:09,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:01:09,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:01:09,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:01:09,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:01:09,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:01:09,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:01:09,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:01:09,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:01:09,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:01:09,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:01:09,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:01:09,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:01:09,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:01:09,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:01:09,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:01:09,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:01:09,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:01:09,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:01:09,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:01:09,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:01:09,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:01:09,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:01:09,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:01:09,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:01:09,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:01:09,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:01:09,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:01:09,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:01:09,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:01:09,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:01:09,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:01:09,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:01:09,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:01:09,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:01:09,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:01:09,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:01:09,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 08:01:09,483 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:01:09,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:01:09,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:01:09,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:01:09,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:01:09,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:01:09,498 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:01:09,499 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:01:09,499 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:01:09,499 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:01:09,499 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:01:09,499 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:01:09,499 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:01:09,499 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:01:09,499 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:01:09,500 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:01:09,500 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:01:09,500 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:01:09,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:01:09,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:01:09,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:01:09,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:01:09,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:01:09,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:01:09,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:01:09,501 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:01:09,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:01:09,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:01:09,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:01:09,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:01:09,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:01:09,502 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:01:09,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:01:09,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:01:09,502 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:01:09,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:01:09,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:01:09,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:01:09,503 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_d994c00d-d425-4c90-a1d6-87291015f970/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7907d012b9c764bd623ba97e3fe681984ff5e165fb3f5820b36269ce719d1dfd [2022-12-14 08:01:09,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:01:09,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:01:09,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:01:09,690 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:01:09,691 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:01:09,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c [2022-12-14 08:01:12,279 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:01:12,417 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:01:12,417 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c [2022-12-14 08:01:12,422 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/data/b055411ef/0cc7aa03158445e2ac217924972b9106/FLAGe9f17d1b5 [2022-12-14 08:01:12,435 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/data/b055411ef/0cc7aa03158445e2ac217924972b9106 [2022-12-14 08:01:12,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:01:12,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:01:12,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:01:12,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:01:12,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:01:12,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e5c0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12, skipping insertion in model container [2022-12-14 08:01:12,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:01:12,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:01:12,556 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_d994c00d-d425-4c90-a1d6-87291015f970/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c[1107,1120] [2022-12-14 08:01:12,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:01:12,587 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:01:12,594 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_d994c00d-d425-4c90-a1d6-87291015f970/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c[1107,1120] [2022-12-14 08:01:12,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:01:12,618 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:01:12,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12 WrapperNode [2022-12-14 08:01:12,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:01:12,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:01:12,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:01:12,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:01:12,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,647 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2022-12-14 08:01:12,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:01:12,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:01:12,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:01:12,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:01:12,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:01:12,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:01:12,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:01:12,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:01:12,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12" (1/1) ... [2022-12-14 08:01:12,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:01:12,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:01:12,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:01:12,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:01:12,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:01:12,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:01:12,796 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:01:12,799 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:01:12,968 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:01:12,989 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:01:12,989 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:01:12,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:01:12 BoogieIcfgContainer [2022-12-14 08:01:12,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:01:12,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:01:12,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:01:12,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:01:12,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:01:12" (1/3) ... [2022-12-14 08:01:12,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3557eb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:01:12, skipping insertion in model container [2022-12-14 08:01:12,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:12" (2/3) ... [2022-12-14 08:01:12,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3557eb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:01:12, skipping insertion in model container [2022-12-14 08:01:12,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:01:12" (3/3) ... [2022-12-14 08:01:13,000 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cav14_example.c [2022-12-14 08:01:13,017 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:01:13,018 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:01:13,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:01:13,072 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@33fef3c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:01:13,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:01:13,076 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 08:01:13,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 08:01:13,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:01:13,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 08:01:13,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:01:13,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:01:13,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 08:01:13,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:01:13,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146557438] [2022-12-14 08:01:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:01:13,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:01:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:01:13,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:01:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:01:13,260 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 08:01:13,262 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:01:13,263 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 08:01:13,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:01:13,268 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 08:01:13,272 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:01:13,281 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 08:01:13,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:01:13 BoogieIcfgContainer [2022-12-14 08:01:13,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:01:13,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:01:13,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:01:13,287 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:01:13,287 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:01:12" (3/4) ... [2022-12-14 08:01:13,290 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 08:01:13,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:01:13,291 INFO L158 Benchmark]: Toolchain (without parser) took 852.37ms. Allocated memory is still 148.9MB. Free memory was 105.9MB in the beginning and 52.4MB in the end (delta: 53.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-12-14 08:01:13,291 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 148.9MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:01:13,291 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.16ms. Allocated memory is still 148.9MB. Free memory was 105.4MB in the beginning and 93.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 08:01:13,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.39ms. Allocated memory is still 148.9MB. Free memory was 93.9MB in the beginning and 91.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:01:13,292 INFO L158 Benchmark]: Boogie Preprocessor took 25.20ms. Allocated memory is still 148.9MB. Free memory was 91.8MB in the beginning and 90.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:01:13,292 INFO L158 Benchmark]: RCFGBuilder took 318.10ms. Allocated memory is still 148.9MB. Free memory was 90.7MB in the beginning and 70.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 08:01:13,293 INFO L158 Benchmark]: TraceAbstraction took 291.72ms. Allocated memory is still 148.9MB. Free memory was 69.7MB in the beginning and 52.4MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 08:01:13,293 INFO L158 Benchmark]: Witness Printer took 3.58ms. Allocated memory is still 148.9MB. Free memory is still 52.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:01:13,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 148.9MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 179.16ms. Allocated memory is still 148.9MB. Free memory was 105.4MB in the beginning and 93.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.39ms. Allocated memory is still 148.9MB. Free memory was 93.9MB in the beginning and 91.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.20ms. Allocated memory is still 148.9MB. Free memory was 91.8MB in the beginning and 90.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 318.10ms. Allocated memory is still 148.9MB. Free memory was 90.7MB in the beginning and 70.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 291.72ms. Allocated memory is still 148.9MB. Free memory was 69.7MB in the beginning and 52.4MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.58ms. Allocated memory is still 148.9MB. Free memory is still 52.4MB. 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 54, overapproximation of bitwiseAnd at line 59. 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_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 3); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (3 - 1); [L31] const SORT_3 var_4 = 0; [L32] const SORT_1 var_13 = 1; [L33] const SORT_3 var_19 = 7; [L34] const SORT_3 var_23 = 1; [L36] SORT_1 input_2; [L38] SORT_3 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L39] SORT_3 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L41] SORT_3 init_6_arg_1 = var_4; [L42] state_5 = init_6_arg_1 [L43] SORT_3 init_8_arg_1 = var_4; [L44] state_7 = init_8_arg_1 VAL [init_6_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_3=7, msb_SORT_1=1, msb_SORT_3=4, state_5=0, state_7=0, var_13=1, var_19=7, var_23=1, var_4=0] [L47] input_2 = __VERIFIER_nondet_uchar() [L50] SORT_3 var_9_arg_0 = state_5; [L51] SORT_3 var_9_arg_1 = state_7; [L52] SORT_1 var_9 = var_9_arg_0 > var_9_arg_1; [L53] SORT_1 var_10_arg_0 = var_9; [L54] SORT_1 var_10 = ~var_10_arg_0; [L55] SORT_1 var_14_arg_0 = var_10; [L56] SORT_1 var_14 = ~var_14_arg_0; [L57] SORT_1 var_15_arg_0 = var_13; [L58] SORT_1 var_15_arg_1 = var_14; [L59] SORT_1 var_15 = var_15_arg_0 & var_15_arg_1; [L60] var_15 = var_15 & mask_SORT_1 [L61] SORT_1 bad_16_arg_0 = var_15; [L62] CALL __VERIFIER_assert(!(bad_16_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: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s 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 08:01:13,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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_d994c00d-d425-4c90-a1d6-87291015f970/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 7907d012b9c764bd623ba97e3fe681984ff5e165fb3f5820b36269ce719d1dfd --- 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 08:01:15,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:01:15,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:01:15,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:01:15,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:01:15,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:01:15,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:01:15,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:01:15,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:01:15,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:01:15,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:01:15,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:01:15,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:01:15,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:01:15,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:01:15,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:01:15,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:01:15,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:01:15,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:01:15,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:01:15,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:01:15,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:01:15,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:01:15,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:01:15,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:01:15,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:01:15,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:01:15,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:01:15,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:01:15,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:01:15,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:01:15,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:01:15,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:01:15,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:01:15,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:01:15,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:01:15,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:01:15,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:01:15,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:01:15,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:01:15,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:01:15,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 08:01:15,082 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:01:15,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:01:15,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:01:15,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:01:15,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:01:15,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:01:15,084 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:01:15,084 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:01:15,084 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:01:15,085 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:01:15,085 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:01:15,085 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:01:15,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:01:15,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:01:15,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:01:15,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:01:15,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:01:15,086 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:01:15,086 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 08:01:15,087 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 08:01:15,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:01:15,087 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:01:15,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:01:15,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:01:15,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 08:01:15,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:01:15,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:01:15,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:01:15,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:01:15,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:01:15,089 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 08:01:15,089 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 08:01:15,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:01:15,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:01:15,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 08:01:15,089 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_d994c00d-d425-4c90-a1d6-87291015f970/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7907d012b9c764bd623ba97e3fe681984ff5e165fb3f5820b36269ce719d1dfd [2022-12-14 08:01:15,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:01:15,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:01:15,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:01:15,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:01:15,325 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:01:15,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c [2022-12-14 08:01:17,987 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:01:18,135 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:01:18,136 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c [2022-12-14 08:01:18,143 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/data/80004b449/e3b2b7f0378f4115be83700c738798da/FLAG38846f71d [2022-12-14 08:01:18,537 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/data/80004b449/e3b2b7f0378f4115be83700c738798da [2022-12-14 08:01:18,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:01:18,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:01:18,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:01:18,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:01:18,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:01:18,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b41bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18, skipping insertion in model container [2022-12-14 08:01:18,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:01:18,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:01:18,653 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_d994c00d-d425-4c90-a1d6-87291015f970/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c[1107,1120] [2022-12-14 08:01:18,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:01:18,687 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:01:18,695 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_d994c00d-d425-4c90-a1d6-87291015f970/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c[1107,1120] [2022-12-14 08:01:18,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:01:18,718 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:01:18,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18 WrapperNode [2022-12-14 08:01:18,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:01:18,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:01:18,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:01:18,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:01:18,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,748 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2022-12-14 08:01:18,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:01:18,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:01:18,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:01:18,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:01:18,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,771 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:01:18,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:01:18,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:01:18,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:01:18,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18" (1/1) ... [2022-12-14 08:01:18,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:01:18,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:01:18,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:01:18,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:01:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:01:18,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:01:18,900 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:01:18,902 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:01:19,017 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:01:19,022 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:01:19,023 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:01:19,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:01:19 BoogieIcfgContainer [2022-12-14 08:01:19,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:01:19,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:01:19,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:01:19,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:01:19,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:01:18" (1/3) ... [2022-12-14 08:01:19,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182eb702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:01:19, skipping insertion in model container [2022-12-14 08:01:19,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:01:18" (2/3) ... [2022-12-14 08:01:19,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182eb702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:01:19, skipping insertion in model container [2022-12-14 08:01:19,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:01:19" (3/3) ... [2022-12-14 08:01:19,031 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cav14_example.c [2022-12-14 08:01:19,048 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:01:19,048 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:01:19,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:01:19,099 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;@7e6cc23d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:01:19,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:01:19,103 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 08:01:19,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 08:01:19,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:01:19,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 08:01:19,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:01:19,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:01:19,115 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 08:01:19,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:01:19,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041324528] [2022-12-14 08:01:19,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:01:19,128 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 08:01:19,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:01:19,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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 08:01:19,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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 08:01:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:01:19,188 WARN L261 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 08:01:19,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:01:19,353 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 08:01:19,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:01:19,354 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:01:19,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041324528] [2022-12-14 08:01:19,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041324528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:01:19,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:01:19,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:01:19,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712135659] [2022-12-14 08:01:19,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:01:19,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:01:19,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:01:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:01:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:01:19,384 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 08:01:19,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:01:19,428 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 08:01:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:01:19,430 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 08:01:19,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:01:19,442 INFO L225 Difference]: With dead ends: 20 [2022-12-14 08:01:19,442 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 08:01:19,444 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 08:01:19,448 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 08:01:19,449 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 08:01:19,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 08:01:19,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 08:01:19,478 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 08:01:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 08:01:19,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 08:01:19,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:01:19,480 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 08:01:19,480 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 08:01:19,481 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 08:01:19,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 08:01:19,481 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:01:19,481 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 08:01:19,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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 08:01:19,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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 08:01:19,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:01:19,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:01:19,688 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 08:01:19,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:01:19,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192040744] [2022-12-14 08:01:19,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:01:19,693 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 08:01:19,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:01:19,726 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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 08:01:19,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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 08:01:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:01:19,879 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 08:01:19,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:01:20,126 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 08:01:20,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:01:20,862 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 08:01:20,862 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:01:20,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192040744] [2022-12-14 08:01:20,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192040744] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:01:20,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1322605410] [2022-12-14 08:01:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:01:20,863 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:01:20,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:01:20,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:01:20,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 08:01:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:01:20,944 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-14 08:01:20,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:01:21,117 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 08:01:21,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:01:22,276 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 08:01:22,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1322605410] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:01:22,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289032362] [2022-12-14 08:01:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:01:22,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:01:22,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:01:22,279 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:01:22,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:01:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:01:22,331 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-14 08:01:22,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:01:22,492 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 08:01:22,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:01:23,116 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 08:01:23,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289032362] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:01:23,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:01:23,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 12 [2022-12-14 08:01:23,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098686986] [2022-12-14 08:01:23,117 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:01:23,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 08:01:23,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:01:23,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 08:01:23,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:01:23,120 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 08:01:23,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:01:23,236 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-12-14 08:01:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 08:01:23,237 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 08:01:23,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:01:23,237 INFO L225 Difference]: With dead ends: 19 [2022-12-14 08:01:23,237 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 08:01:23,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:01:23,239 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:01:23,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 26 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:01:23,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 08:01:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 08:01:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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 08:01:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 08:01:23,244 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-12-14 08:01:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:01:23,244 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 08:01:23,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 08:01:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 08:01:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 08:01:23,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:01:23,245 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 08:01:23,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-12-14 08:01:23,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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 08:01:23,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:01:23,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:01:23,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:01:23,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:01:23,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-12-14 08:01:23,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:01:23,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862141367] [2022-12-14 08:01:23,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:01:23,855 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 08:01:23,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:01:23,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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 08:01:23,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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 08:01:23,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:01:23,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:01:23,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 110 conjunts are in the unsatisfiable core [2022-12-14 08:01:23,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:01:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:01:24,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:01:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 08:01:25,569 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:01:25,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862141367] [2022-12-14 08:01:25,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862141367] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:01:25,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [33265352] [2022-12-14 08:01:25,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:01:25,569 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:01:25,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:01:25,570 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:01:25,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 08:01:25,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:01:25,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:01:25,759 WARN L261 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 113 conjunts are in the unsatisfiable core [2022-12-14 08:01:25,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:01:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:01:26,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:01:29,356 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (or (forall ((|v_ULTIMATE.start_main_~var_15_arg_0~0#1_12| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_15_arg_0~0#1_12|) (_ bv1 32)))))))) (let ((.cse4 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_3~0#1|)) (.cse5 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_23~0#1|)) (.cse27 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_7~0#1|))) (let ((.cse13 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_5~0#1|)) (.cse24 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse5 .cse27))))))))))) (.cse11 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_19~0#1|))) (let ((.cse6 (forall ((|v_ULTIMATE.start_main_~var_32_arg_2~0#1_14| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_32_arg_2~0#1_14|)))))))) .cse11)))) (.cse12 (not (= .cse11 .cse24))) (.cse9 (forall ((|v_ULTIMATE.start_main_~var_32_arg_2~0#1_13| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_26_arg_2~0#1_13| (_ BitVec 8))) (not (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_13|)))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_32_arg_2~0#1_13|)))))))))))) (.cse8 (forall ((|v_ULTIMATE.start_main_~var_34_arg_1~0#1_13| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_26_arg_2~0#1_13| (_ BitVec 8))) (not (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_13|)))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_34_arg_1~0#1_13|)))))))))) (.cse1 (= .cse13 .cse27))) (and (or (not .cse1) (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse5 .cse13)))))))))) (let ((.cse7 (forall ((|v_ULTIMATE.start_main_~var_32_arg_2~0#1_13| (_ BitVec 8))) (not (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse3 .cse5)))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_32_arg_2~0#1_13|))))))))))))) (and (or (and (forall ((|v_ULTIMATE.start_main_~var_32_arg_2~0#1_14| (_ BitVec 8))) (let ((.cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_32_arg_2~0#1_14|)))))))))) (or (= .cse2 .cse3) (forall ((|v_ULTIMATE.start_main_~var_26_arg_2~0#1_13| (_ BitVec 8))) (not (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_13|)))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse2 .cse5)))))))))))))))) (or .cse6 .cse7) (or .cse8 (forall ((|v_ULTIMATE.start_main_~var_32_arg_2~0#1_14| (_ BitVec 8))) (not (bvsgt .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_32_arg_2~0#1_14|)))))))))))) (or .cse9 (forall ((|v_ULTIMATE.start_main_~var_32_arg_2~0#1_14| (_ BitVec 8))) (let ((.cse10 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_32_arg_2~0#1_14|)))))))))) (or (= .cse10 .cse3) (not (= .cse10 .cse11))))))) (forall ((|v_ULTIMATE.start_main_~var_31_arg_1~0#1_14| (_ BitVec 8))) (not (= ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_31_arg_1~0#1_14|) (_ bv1 32)))) .cse0)) (_ bv0 8))))) (or (forall ((|v_ULTIMATE.start_main_~var_31_arg_1~0#1_14| (_ BitVec 8))) (= ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_31_arg_1~0#1_14|) (_ bv1 32)))) .cse0)) (_ bv0 8))) .cse7 .cse12))))) (or (let ((.cse16 (bvsgt .cse13 .cse27))) (let ((.cse17 (forall ((|v_ULTIMATE.start_main_~var_26_arg_2~0#1_14| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_32_arg_2~0#1_13| (_ BitVec 8))) (not (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_14|)))))))))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_32_arg_2~0#1_13|)))))))))))) (.cse15 (forall ((|v_ULTIMATE.start_main_~var_34_arg_1~0#1_14| (_ BitVec 8))) (not (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_34_arg_1~0#1_14|)))))))))) (.cse18 (forall ((|v_ULTIMATE.start_main_~var_34_arg_1~0#1_14| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_26_arg_2~0#1_14| (_ BitVec 8))) (let ((.cse26 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_34_arg_1~0#1_14|)))))))) (or (not (= .cse11 .cse26)) (= .cse26 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_14|))))))))))) (.cse20 (forall ((|v_ULTIMATE.start_main_~var_34_arg_1~0#1_14| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_26_arg_2~0#1_14| (_ BitVec 8))) (not (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_14|)))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_34_arg_1~0#1_14|)))))))))) (.cse14 (not .cse16))) (and (or (forall ((|v_ULTIMATE.start_main_~var_31_arg_1~0#1_14| (_ BitVec 8))) (not (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_31_arg_1~0#1_14|) (_ bv0 32)))))) (_ bv0 8)))) (and (or (and (or .cse14 .cse15) (or .cse16 .cse6)) .cse17) (or .cse9 (and (or .cse14 .cse18) (or .cse16 (forall ((|v_ULTIMATE.start_main_~var_32_arg_2~0#1_14| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_26_arg_2~0#1_14| (_ BitVec 8))) (let ((.cse19 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_32_arg_2~0#1_14|)))))))))) (or (= .cse19 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_14|))))))) (not (= .cse19 .cse11)))))))) (or (and (or .cse14 .cse20) (or .cse16 (forall ((|v_ULTIMATE.start_main_~var_32_arg_2~0#1_14| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_26_arg_2~0#1_14| (_ BitVec 8))) (not (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_14|)))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_32_arg_2~0#1_14|))))))))))))) .cse8) (or (forall ((|v_ULTIMATE.start_main_~var_34_arg_1~0#1_14| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_26_arg_2~0#1_14| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_26_arg_2~0#1_13| (_ BitVec 8))) (let ((.cse21 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_34_arg_1~0#1_14|)))))))) (or (not (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_13|)))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse5 .cse21)))))))))))) (= .cse21 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_14|)))))))))) .cse14) (or .cse16 (forall ((|v_ULTIMATE.start_main_~var_32_arg_2~0#1_14| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_26_arg_2~0#1_14| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_26_arg_2~0#1_13| (_ BitVec 8))) (let ((.cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_32_arg_2~0#1_14|)))))))))) (or (= .cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_14|))))))) (not (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_13|)))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse22 .cse5)))))))))))))))))) (or (and (or .cse16 (let ((.cse23 (forall ((|v_ULTIMATE.start_main_~var_26_arg_2~0#1_14| (_ BitVec 8))) (= .cse24 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_14|)))))))))) (and (or (and .cse17 (or .cse9 .cse23)) .cse12) (or .cse23 (forall ((|v_ULTIMATE.start_main_~var_26_arg_2~0#1_13| (_ BitVec 8))) (not (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_13|)))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse5 .cse24)))))))))))))) (or .cse8 (forall ((|v_ULTIMATE.start_main_~var_26_arg_2~0#1_14| (_ BitVec 8))) (not (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_14|)))))) .cse24))))))) (or (and (or .cse17 .cse15) (or .cse9 .cse18) (forall ((|v_ULTIMATE.start_main_~var_34_arg_1~0#1_14| (_ BitVec 8))) (let ((.cse25 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_34_arg_1~0#1_14|)))))))) (or (forall ((|v_ULTIMATE.start_main_~var_26_arg_2~0#1_14| (_ BitVec 8))) (= .cse25 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_14|)))))))) (forall ((|v_ULTIMATE.start_main_~var_26_arg_2~0#1_13| (_ BitVec 8))) (not (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_13|)))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse5 .cse25)))))))))))))))) (or .cse20 .cse8)) .cse14)) (forall ((|v_ULTIMATE.start_main_~var_31_arg_1~0#1_14| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_31_arg_1~0#1_14|) (_ bv0 32)))))) (_ bv0 8))))))) .cse1))))))) is different from false [2022-12-14 08:07:57,955 WARN L233 SmtUtils]: Spent 6.27m on a formula simplification. DAG size of input: 644 DAG size of output: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:07:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-12-14 08:07:58,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [33265352] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:07:58,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024619906] [2022-12-14 08:07:58,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:07:58,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:07:58,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:07:58,332 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:07:58,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 08:07:58,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:07:58,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:07:58,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 110 conjunts are in the unsatisfiable core [2022-12-14 08:07:58,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:07:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:07:58,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:08:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 08:08:00,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024619906] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:08:00,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:08:00,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7, 7, 7, 6] total 17 [2022-12-14 08:08:00,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036867139] [2022-12-14 08:08:00,832 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:08:00,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 08:08:00,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:08:00,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 08:08:00,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=184, Unknown=3, NotChecked=28, Total=272 [2022-12-14 08:08:00,835 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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 08:08:01,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:01,745 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-12-14 08:08:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:08:01,746 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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 14 [2022-12-14 08:08:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:01,747 INFO L225 Difference]: With dead ends: 19 [2022-12-14 08:08:01,747 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 08:08:01,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 387.7s TimeCoverageRelationStatistics Valid=104, Invalid=317, Unknown=3, NotChecked=38, Total=462 [2022-12-14 08:08:01,748 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:01,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 17 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 10 Unchecked, 0.3s Time] [2022-12-14 08:08:01,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 08:08:01,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 08:08:01,750 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 08:08:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 08:08:01,750 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-12-14 08:08:01,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:01,750 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 08:08:01,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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 08:08:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 08:08:01,751 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 08:08:01,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 08:08:01,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 08:08:01,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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)] Ended with exit code 0 [2022-12-14 08:08:02,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 08:08:02,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:02,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 08:08:02,723 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 08:08:02,724 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 08:08:02,724 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 121) the Hoare annotation is: false [2022-12-14 08:08:02,724 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 08:08:02,724 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 08:08:02,724 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-12-14 08:08:02,724 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-12-14 08:08:02,724 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-12-14 08:08:02,724 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-12-14 08:08:02,725 INFO L895 garLoopResultBuilder]: At program point L45-2(lines 45 119) the Hoare annotation is: (or (let ((.cse2 (forall ((|v_ULTIMATE.start_main_~var_15_arg_0~0#1_12| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_15_arg_0~0#1_12|) (_ bv1 32)))) ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_1~0#1|)))))) (.cse0 ((_ zero_extend 24) |ULTIMATE.start_main_~state_5~0#1|)) (.cse1 ((_ zero_extend 24) |ULTIMATE.start_main_~state_7~0#1|))) (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (or (not (bvsgt .cse0 .cse1)) .cse2) (or .cse2 (= .cse0 .cse1) (forall ((|v_ULTIMATE.start_main_~var_26_arg_2~0#1_9| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_32_arg_2~0#1_9| (_ BitVec 8))) (not (let ((.cse3 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_3~0#1|))) (bvsgt ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_26_arg_2~0#1_9|))) .cse3))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_32_arg_2~0#1_9|))))) .cse3)))))))))) (and (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|) (= (_ bv7 8) |ULTIMATE.start_main_~var_19~0#1|) (= (_ bv7 8) |ULTIMATE.start_main_~mask_SORT_3~0#1|) (= |ULTIMATE.start_main_~state_7~0#1| (_ bv0 8)) (= (_ bv1 8) |ULTIMATE.start_main_~var_23~0#1|) (= |ULTIMATE.start_main_~state_5~0#1| |ULTIMATE.start_main_~state_7~0#1|))) [2022-12-14 08:08:02,725 INFO L899 garLoopResultBuilder]: For program point L45-3(lines 45 119) no Hoare annotation was computed. [2022-12-14 08:08:02,727 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2022-12-14 08:08:02,729 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:08:02,736 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_15_arg_0~0#1_12,QUANTIFIED] [2022-12-14 08:08:02,737 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_15_arg_0~0#1_12,QUANTIFIED] [2022-12-14 08:08:02,737 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_26_arg_2~0#1_9,QUANTIFIED] [2022-12-14 08:08:02,737 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_32_arg_2~0#1_9,QUANTIFIED] [2022-12-14 08:08:02,742 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_15_arg_0~0#1_12,QUANTIFIED] [2022-12-14 08:08:02,742 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_15_arg_0~0#1_12,QUANTIFIED] [2022-12-14 08:08:02,742 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_26_arg_2~0#1_9,QUANTIFIED] [2022-12-14 08:08:02,742 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_32_arg_2~0#1_9,QUANTIFIED] [2022-12-14 08:08:02,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:08:02 BoogieIcfgContainer [2022-12-14 08:08:02,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:08:02,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:08:02,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:08:02,744 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:08:02,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:01:19" (3/4) ... [2022-12-14 08:08:02,747 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 08:08:02,755 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-14 08:08:02,755 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 08:08:02,755 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 08:08:02,782 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 08:08:02,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:08:02,783 INFO L158 Benchmark]: Toolchain (without parser) took 404243.13ms. Allocated memory was 79.7MB in the beginning and 142.6MB in the end (delta: 62.9MB). Free memory was 51.3MB in the beginning and 94.0MB in the end (delta: -42.7MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2022-12-14 08:08:02,783 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory is still 31.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:08:02,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.18ms. Allocated memory is still 79.7MB. Free memory was 51.1MB in the beginning and 39.4MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 08:08:02,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.96ms. Allocated memory is still 79.7MB. Free memory was 39.4MB in the beginning and 37.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:08:02,783 INFO L158 Benchmark]: Boogie Preprocessor took 25.09ms. Allocated memory is still 79.7MB. Free memory was 37.3MB in the beginning and 35.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:08:02,784 INFO L158 Benchmark]: RCFGBuilder took 248.82ms. Allocated memory is still 79.7MB. Free memory was 35.9MB in the beginning and 48.2MB in the end (delta: -12.3MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2022-12-14 08:08:02,784 INFO L158 Benchmark]: TraceAbstraction took 403717.77ms. Allocated memory was 79.7MB in the beginning and 142.6MB in the end (delta: 62.9MB). Free memory was 47.6MB in the beginning and 97.2MB in the end (delta: -49.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-12-14 08:08:02,784 INFO L158 Benchmark]: Witness Printer took 38.50ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 94.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 08:08:02,786 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 52.4MB. Free memory is still 31.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.18ms. Allocated memory is still 79.7MB. Free memory was 51.1MB in the beginning and 39.4MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.96ms. Allocated memory is still 79.7MB. Free memory was 39.4MB in the beginning and 37.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.09ms. Allocated memory is still 79.7MB. Free memory was 37.3MB in the beginning and 35.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 248.82ms. Allocated memory is still 79.7MB. Free memory was 35.9MB in the beginning and 48.2MB in the end (delta: -12.3MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. * TraceAbstraction took 403717.77ms. Allocated memory was 79.7MB in the beginning and 142.6MB in the end (delta: 62.9MB). Free memory was 47.6MB in the beginning and 97.2MB in the end (delta: -49.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Witness Printer took 38.50ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 94.0MB in the end (delta: 3.1MB). 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[v_ULTIMATE.start_main_~var_15_arg_0~0#1_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_15_arg_0~0#1_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_26_arg_2~0#1_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_32_arg_2~0#1_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_15_arg_0~0#1_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_15_arg_0~0#1_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_26_arg_2~0#1_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_32_arg_2~0#1_9,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: 403.6s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 10 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 139 IncrementalHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 11 mSDtfsCounter, 139 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 86 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 388.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, InterpolantAutomatonStates: 22, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 87 HoareAnnotationTreeSize, 2 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 187 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 399.9s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 124 ConstructedInterpolants, 42 QuantifiedInterpolants, 7975 SizeOfPredicates, 531 NumberOfNonLiveVariables, 997 ConjunctsInSsa, 505 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 6/102 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: 45]: Loop Invariant [2022-12-14 08:08:02,792 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_15_arg_0~0#1_12,QUANTIFIED] [2022-12-14 08:08:02,792 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_15_arg_0~0#1_12,QUANTIFIED] [2022-12-14 08:08:02,793 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_26_arg_2~0#1_9,QUANTIFIED] [2022-12-14 08:08:02,793 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_32_arg_2~0#1_9,QUANTIFIED] [2022-12-14 08:08:02,793 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_15_arg_0~0#1_12,QUANTIFIED] [2022-12-14 08:08:02,794 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_15_arg_0~0#1_12,QUANTIFIED] [2022-12-14 08:08:02,794 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_26_arg_2~0#1_9,QUANTIFIED] [2022-12-14 08:08:02,794 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_32_arg_2~0#1_9,QUANTIFIED] Derived loop invariant: ((cond == 1bv32 && (!~bvsgt32(~zero_extendFrom8To32(state_5), ~zero_extendFrom8To32(state_7)) || (forall v_ULTIMATE.start_main_~var_15_arg_0~0#1_12 : bv8 :: 0bv8 == ~bvand32(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~var_15_arg_0~0#1_12), 1bv32)[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0]))) && (((forall v_ULTIMATE.start_main_~var_15_arg_0~0#1_12 : bv8 :: 0bv8 == ~bvand32(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~var_15_arg_0~0#1_12), 1bv32)[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0]) || ~zero_extendFrom8To32(state_5) == ~zero_extendFrom8To32(state_7)) || (forall v_ULTIMATE.start_main_~var_26_arg_2~0#1_9 : bv8, v_ULTIMATE.start_main_~var_32_arg_2~0#1_9 : bv8 :: !~bvsgt32(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~var_26_arg_2~0#1_9)[7:0]), ~zero_extendFrom8To32(mask_SORT_3))[7:0]), ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~var_32_arg_2~0#1_9)[7:0])[7:0]), ~zero_extendFrom8To32(mask_SORT_3))[7:0]))))) || (((((1bv8 == mask_SORT_1 && 7bv8 == var_19) && 7bv8 == mask_SORT_3) && state_7 == 0bv8) && 1bv8 == var_23) && state_5 == state_7) RESULT: Ultimate proved your program to be correct! [2022-12-14 08:08:02,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d994c00d-d425-4c90-a1d6-87291015f970/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