./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur --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 6270eb1b6253e856606c006aad6f25958ddccc57a27345214c2cf80ca93686b2 --- 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-38b53e6 [2022-11-26 00:33:55,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:33:55,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:33:55,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:33:55,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:33:55,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:33:55,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:33:55,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:33:55,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:33:55,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:33:55,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:33:55,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:33:55,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:33:55,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:33:55,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:33:55,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:33:55,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:33:55,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:33:55,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:33:55,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:33:55,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:33:55,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:33:55,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:33:55,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:33:55,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:33:55,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:33:55,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:33:55,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:33:55,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:33:55,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:33:55,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:33:55,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:33:55,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:33:55,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:33:55,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:33:55,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:33:55,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:33:55,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:33:55,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:33:55,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:33:55,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:33:55,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:33:55,529 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:33:55,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:33:55,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:33:55,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:33:55,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:33:55,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:33:55,531 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:33:55,532 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:33:55,532 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:33:55,532 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:33:55,534 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:33:55,535 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:33:55,535 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:33:55,535 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:33:55,535 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:33:55,536 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:33:55,536 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:33:55,536 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:33:55,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:33:55,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:33:55,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:33:55,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:33:55,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:33:55,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:33:55,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:33:55,538 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:33:55,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:33:55,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:33:55,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:33:55,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:33:55,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:33:55,540 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:33:55,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:33:55,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:33:55,541 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:33:55,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:33:55,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:33:55,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:33:55,541 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_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6270eb1b6253e856606c006aad6f25958ddccc57a27345214c2cf80ca93686b2 [2022-11-26 00:33:55,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:33:55,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:33:55,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:33:55,871 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:33:55,872 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:33:55,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2022-11-26 00:33:58,974 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:33:59,251 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:33:59,252 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2022-11-26 00:33:59,257 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/data/3aeafe889/f6be7ef4b1014e2b9786a0826a3a63c5/FLAGf9f41fcff [2022-11-26 00:33:59,271 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/data/3aeafe889/f6be7ef4b1014e2b9786a0826a3a63c5 [2022-11-26 00:33:59,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:33:59,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:33:59,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:33:59,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:33:59,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:33:59,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc7a070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59, skipping insertion in model container [2022-11-26 00:33:59,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:33:59,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:33:59,449 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_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c[1117,1130] [2022-11-26 00:33:59,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:33:59,484 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:33:59,495 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_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c[1117,1130] [2022-11-26 00:33:59,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:33:59,515 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:33:59,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59 WrapperNode [2022-11-26 00:33:59,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:33:59,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:33:59,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:33:59,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:33:59,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,547 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2022-11-26 00:33:59,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:33:59,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:33:59,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:33:59,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:33:59,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,567 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:33:59,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:33:59,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:33:59,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:33:59,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59" (1/1) ... [2022-11-26 00:33:59,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:33:59,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:59,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:33:59,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:33:59,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:33:59,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:33:59,711 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:33:59,713 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:33:59,906 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:33:59,939 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:33:59,939 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:33:59,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:33:59 BoogieIcfgContainer [2022-11-26 00:33:59,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:33:59,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:33:59,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:33:59,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:33:59,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:33:59" (1/3) ... [2022-11-26 00:33:59,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f94734d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:33:59, skipping insertion in model container [2022-11-26 00:33:59,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:59" (2/3) ... [2022-11-26 00:33:59,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f94734d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:33:59, skipping insertion in model container [2022-11-26 00:33:59,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:33:59" (3/3) ... [2022-11-26 00:33:59,979 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.recount4.c [2022-11-26 00:34:00,000 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:34:00,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:34:00,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:34:00,109 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;@7f7c47d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:34:00,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:34:00,114 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) [2022-11-26 00:34:00,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:34:00,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:34:00,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:34:00,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:34:00,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:34:00,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-26 00:34:00,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:34:00,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981307568] [2022-11-26 00:34:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:00,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:34:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:34:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:00,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:34:00,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981307568] [2022-11-26 00:34:00,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981307568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:34:00,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:34:00,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:34:00,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376286674] [2022-11-26 00:34:00,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:34:00,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:34:00,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:34:00,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:34:00,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:34:00,851 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:34:00,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:34:00,937 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2022-11-26 00:34:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:34:00,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 00:34:00,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:34:00,947 INFO L225 Difference]: With dead ends: 15 [2022-11-26 00:34:00,947 INFO L226 Difference]: Without dead ends: 9 [2022-11-26 00:34:00,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:34:00,964 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:34:00,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:34:01,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-26 00:34:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-11-26 00:34:01,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:34:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-26 00:34:01,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2022-11-26 00:34:01,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:34:01,050 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-26 00:34:01,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:34:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-26 00:34:01,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:34:01,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:34:01,053 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-26 00:34:01,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:34:01,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:34:01,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:34:01,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2022-11-26 00:34:01,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:34:01,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011467821] [2022-11-26 00:34:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:01,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:34:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:34:01,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:34:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:34:01,343 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:34:01,344 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:34:01,345 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:34:01,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:34:01,352 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-26 00:34:01,358 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:34:01,384 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:34:01,385 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:34:01,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:34:01 BoogieIcfgContainer [2022-11-26 00:34:01,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:34:01,401 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:34:01,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:34:01,402 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:34:01,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:33:59" (3/4) ... [2022-11-26 00:34:01,405 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:34:01,406 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:34:01,407 INFO L158 Benchmark]: Toolchain (without parser) took 2130.93ms. Allocated memory is still 151.0MB. Free memory was 121.5MB in the beginning and 102.8MB in the end (delta: 18.7MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2022-11-26 00:34:01,407 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:34:01,408 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.39ms. Allocated memory is still 151.0MB. Free memory was 120.9MB in the beginning and 110.4MB in the end (delta: 10.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 00:34:01,412 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.62ms. Allocated memory is still 151.0MB. Free memory was 110.4MB in the beginning and 108.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:34:01,412 INFO L158 Benchmark]: Boogie Preprocessor took 20.78ms. Allocated memory is still 151.0MB. Free memory was 108.3MB in the beginning and 106.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:34:01,415 INFO L158 Benchmark]: RCFGBuilder took 372.60ms. Allocated memory is still 151.0MB. Free memory was 106.9MB in the beginning and 95.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:34:01,415 INFO L158 Benchmark]: TraceAbstraction took 1454.66ms. Allocated memory is still 151.0MB. Free memory was 95.1MB in the beginning and 103.1MB in the end (delta: -8.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:34:01,416 INFO L158 Benchmark]: Witness Printer took 5.32ms. Allocated memory is still 151.0MB. Free memory was 103.1MB in the beginning and 102.8MB in the end (delta: 344.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:34:01,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.39ms. Allocated memory is still 151.0MB. Free memory was 120.9MB in the beginning and 110.4MB in the end (delta: 10.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.62ms. Allocated memory is still 151.0MB. Free memory was 110.4MB in the beginning and 108.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.78ms. Allocated memory is still 151.0MB. Free memory was 108.3MB in the beginning and 106.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 372.60ms. Allocated memory is still 151.0MB. Free memory was 106.9MB in the beginning and 95.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1454.66ms. Allocated memory is still 151.0MB. Free memory was 95.1MB in the beginning and 103.1MB in the end (delta: -8.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.32ms. Allocated memory is still 151.0MB. Free memory was 103.1MB in the beginning and 102.8MB in the end (delta: 344.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 46. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L32] const SORT_4 var_5 = 0; [L33] const SORT_4 var_8 = 1; [L34] const SORT_4 var_13 = mask_SORT_4; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L39] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L41] SORT_4 init_7_arg_1 = var_5; [L42] state_6 = init_7_arg_1 VAL [init_7_arg_1=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, state_6=0, var_13=15, var_5=0, var_8=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=15, state_6=15, var_10=1, var_10_arg_0=1, var_10_arg_1=1, var_10_arg_2=0, var_11=15, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=1, var_13=15, var_14=0, var_14_arg_0=0, var_14_arg_1=15, var_5=0, var_8=1, var_9=1, var_9_arg_0=0, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 3 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:34:01,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur --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 6270eb1b6253e856606c006aad6f25958ddccc57a27345214c2cf80ca93686b2 --- 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-38b53e6 [2022-11-26 00:34:03,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:34:03,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:34:03,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:34:03,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:34:03,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:34:03,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:34:03,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:34:03,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:34:03,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:34:03,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:34:03,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:34:03,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:34:03,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:34:03,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:34:03,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:34:03,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:34:03,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:34:03,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:34:03,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:34:03,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:34:03,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:34:03,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:34:03,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:34:03,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:34:03,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:34:03,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:34:03,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:34:03,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:34:03,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:34:03,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:34:04,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:34:04,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:34:04,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:34:04,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:34:04,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:34:04,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:34:04,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:34:04,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:34:04,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:34:04,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:34:04,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-26 00:34:04,061 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:34:04,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:34:04,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:34:04,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:34:04,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:34:04,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:34:04,065 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:34:04,065 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:34:04,065 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:34:04,066 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:34:04,067 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:34:04,067 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:34:04,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:34:04,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:34:04,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:34:04,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:34:04,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:34:04,069 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:34:04,070 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:34:04,070 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:34:04,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:34:04,071 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:34:04,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:34:04,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:34:04,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:34:04,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:34:04,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:34:04,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:34:04,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:34:04,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:34:04,073 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:34:04,074 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:34:04,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:34:04,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:34:04,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:34:04,075 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_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6270eb1b6253e856606c006aad6f25958ddccc57a27345214c2cf80ca93686b2 [2022-11-26 00:34:04,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:34:04,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:34:04,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:34:04,494 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:34:04,495 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:34:04,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2022-11-26 00:34:07,519 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:34:07,758 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:34:07,759 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2022-11-26 00:34:07,766 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/data/78c103c9b/b1942cbcbdbb4acc8fffb025eb1376ff/FLAGac042110e [2022-11-26 00:34:07,785 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/data/78c103c9b/b1942cbcbdbb4acc8fffb025eb1376ff [2022-11-26 00:34:07,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:34:07,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:34:07,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:34:07,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:34:07,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:34:07,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:34:07" (1/1) ... [2022-11-26 00:34:07,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb58857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:07, skipping insertion in model container [2022-11-26 00:34:07,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:34:07" (1/1) ... [2022-11-26 00:34:07,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:34:07,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:34:07,953 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_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c[1117,1130] [2022-11-26 00:34:07,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:34:07,993 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:34:08,004 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_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c[1117,1130] [2022-11-26 00:34:08,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:34:08,029 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:34:08,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08 WrapperNode [2022-11-26 00:34:08,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:34:08,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:34:08,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:34:08,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:34:08,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08" (1/1) ... [2022-11-26 00:34:08,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08" (1/1) ... [2022-11-26 00:34:08,079 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2022-11-26 00:34:08,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:34:08,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:34:08,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:34:08,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:34:08,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08" (1/1) ... [2022-11-26 00:34:08,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08" (1/1) ... [2022-11-26 00:34:08,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08" (1/1) ... [2022-11-26 00:34:08,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08" (1/1) ... [2022-11-26 00:34:08,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08" (1/1) ... [2022-11-26 00:34:08,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08" (1/1) ... [2022-11-26 00:34:08,136 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08" (1/1) ... [2022-11-26 00:34:08,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08" (1/1) ... [2022-11-26 00:34:08,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:34:08,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:34:08,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:34:08,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:34:08,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08" (1/1) ... [2022-11-26 00:34:08,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:34:08,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:34:08,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:34:08,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:34:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:34:08,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:34:08,322 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:34:08,324 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:34:08,517 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:34:08,524 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:34:08,526 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:34:08,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:34:08 BoogieIcfgContainer [2022-11-26 00:34:08,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:34:08,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:34:08,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:34:08,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:34:08,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:34:07" (1/3) ... [2022-11-26 00:34:08,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5610cd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:34:08, skipping insertion in model container [2022-11-26 00:34:08,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:08" (2/3) ... [2022-11-26 00:34:08,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5610cd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:34:08, skipping insertion in model container [2022-11-26 00:34:08,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:34:08" (3/3) ... [2022-11-26 00:34:08,550 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.recount4.c [2022-11-26 00:34:08,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:34:08,571 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:34:08,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:34:08,648 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;@61a82ef3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:34:08,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:34:08,653 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) [2022-11-26 00:34:08,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:34:08,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:34:08,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:34:08,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:34:08,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:34:08,667 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-26 00:34:08,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:34:08,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454800106] [2022-11-26 00:34:08,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:08,680 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 [2022-11-26 00:34:08,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:34:08,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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) [2022-11-26 00:34:08,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:34:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:34:08,735 WARN L261 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 00:34:08,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:08,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:34:08,957 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:34:08,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454800106] [2022-11-26 00:34:08,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454800106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:34:08,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:34:08,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:34:08,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010184029] [2022-11-26 00:34:08,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:34:08,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:34:08,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:34:09,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:34:09,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:34:09,021 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) [2022-11-26 00:34:09,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:34:09,109 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-26 00:34:09,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:34:09,112 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 [2022-11-26 00:34:09,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:34:09,119 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:34:09,119 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 00:34:09,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:34:09,124 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 [2022-11-26 00:34:09,125 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] [2022-11-26 00:34:09,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 00:34:09,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-26 00:34:09,154 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) [2022-11-26 00:34:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:34:09,156 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 00:34:09,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:34:09,157 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:34:09,158 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) [2022-11-26 00:34:09,158 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:34:09,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:34:09,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:34:09,159 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:34:09,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:34:09,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:34:09,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:34:09,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:34:09,372 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-26 00:34:09,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:34:09,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121543939] [2022-11-26 00:34:09,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:09,376 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 [2022-11-26 00:34:09,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:34:09,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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) [2022-11-26 00:34:09,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:34:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:34:09,460 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-26 00:34:09,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:09,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:34:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:10,119 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:34:10,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121543939] [2022-11-26 00:34:10,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121543939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:34:10,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [971408950] [2022-11-26 00:34:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:10,123 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:34:10,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:34:10,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:34:10,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 00:34:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:34:10,240 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-26 00:34:10,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:10,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:34:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:10,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [971408950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:34:10,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142345644] [2022-11-26 00:34:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:10,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:34:10,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:34:10,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:34:10,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:34:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:34:10,663 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-26 00:34:10,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:10,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:34:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:11,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142345644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:34:11,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:34:11,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-26 00:34:11,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56461585] [2022-11-26 00:34:11,027 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:34:11,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:34:11,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:34:11,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:34:11,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:34:11,029 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:34:11,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:34:11,175 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-26 00:34:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:34:11,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 00:34:11,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:34:11,176 INFO L225 Difference]: With dead ends: 19 [2022-11-26 00:34:11,176 INFO L226 Difference]: Without dead ends: 17 [2022-11-26 00:34:11,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:34:11,178 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:34:11,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:34:11,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-26 00:34:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-26 00:34:11,183 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) [2022-11-26 00:34:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-26 00:34:11,184 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-26 00:34:11,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:34:11,184 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-26 00:34:11,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:34:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-26 00:34:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:34:11,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:34:11,186 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-26 00:34:11,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:34:11,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:34:11,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-26 00:34:11,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:34:11,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:34:11,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:34:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-11-26 00:34:11,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:34:11,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710192092] [2022-11-26 00:34:11,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:34:11,793 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 [2022-11-26 00:34:11,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:34:11,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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) [2022-11-26 00:34:11,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:34:11,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:34:11,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:34:11,858 WARN L261 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-26 00:34:11,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:12,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:34:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:13,955 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:34:13,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710192092] [2022-11-26 00:34:13,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710192092] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:34:13,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2023569122] [2022-11-26 00:34:13,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:34:13,956 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:34:13,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:34:13,957 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:34:13,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-26 00:34:14,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:34:14,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:34:14,075 WARN L261 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-26 00:34:14,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:14,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:34:15,394 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:15,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2023569122] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:34:15,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711410253] [2022-11-26 00:34:15,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:34:15,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:34:15,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:34:15,398 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:34:15,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:34:15,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:34:15,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:34:15,474 WARN L261 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-26 00:34:15,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:15,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:34:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:17,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711410253] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:34:17,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:34:17,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7, 7, 9, 11] total 20 [2022-11-26 00:34:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485671241] [2022-11-26 00:34:17,435 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:34:17,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-26 00:34:17,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:34:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-26 00:34:17,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:34:17,437 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 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) [2022-11-26 00:34:18,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:34:18,312 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-26 00:34:18,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:34:18,312 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 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 [2022-11-26 00:34:18,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:34:18,313 INFO L225 Difference]: With dead ends: 31 [2022-11-26 00:34:18,313 INFO L226 Difference]: Without dead ends: 29 [2022-11-26 00:34:18,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2022-11-26 00:34:18,315 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 41 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:34:18,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 29 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:34:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-26 00:34:18,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-26 00:34:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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) [2022-11-26 00:34:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-26 00:34:18,325 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-26 00:34:18,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:34:18,325 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-26 00:34:18,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 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) [2022-11-26 00:34:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-26 00:34:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:34:18,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:34:18,327 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2022-11-26 00:34:18,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:34:18,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:34:18,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:34:18,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:34:18,944 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:34:18,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:34:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash -752690141, now seen corresponding path program 3 times [2022-11-26 00:34:18,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:34:18,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102443506] [2022-11-26 00:34:18,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:34:18,945 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 [2022-11-26 00:34:18,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:34:18,947 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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) [2022-11-26 00:34:18,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-26 00:34:19,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-26 00:34:19,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:34:19,063 WARN L261 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-26 00:34:19,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:21,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:34:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:32,089 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:34:32,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102443506] [2022-11-26 00:34:32,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102443506] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:34:32,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [800311650] [2022-11-26 00:34:32,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:34:32,090 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:34:32,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:34:32,092 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:34:32,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-26 00:34:32,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-26 00:34:32,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:34:32,289 WARN L261 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-26 00:34:32,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:33,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:34:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:42,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [800311650] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:34:42,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38232343] [2022-11-26 00:34:42,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:34:42,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:34:42,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:34:42,046 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:34:42,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-26 00:34:42,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-26 00:34:42,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:34:42,150 WARN L261 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-26 00:34:42,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:43,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:34:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:52,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38232343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:34:52,860 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:34:52,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12, 13, 13, 14] total 25 [2022-11-26 00:34:52,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790513840] [2022-11-26 00:34:52,861 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:34:52,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-26 00:34:52,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:34:52,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-26 00:34:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=394, Unknown=0, NotChecked=0, Total=600 [2022-11-26 00:34:52,863 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 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) [2022-11-26 00:34:59,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:34:59,453 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2022-11-26 00:34:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-26 00:34:59,453 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 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 26 [2022-11-26 00:34:59,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:34:59,454 INFO L225 Difference]: With dead ends: 55 [2022-11-26 00:34:59,454 INFO L226 Difference]: Without dead ends: 53 [2022-11-26 00:34:59,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=539, Invalid=1021, Unknown=0, NotChecked=0, Total=1560 [2022-11-26 00:34:59,456 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 81 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:34:59,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 34 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-26 00:34:59,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-26 00:34:59,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-11-26 00:34:59,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 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) [2022-11-26 00:34:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-11-26 00:34:59,477 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2022-11-26 00:34:59,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:34:59,477 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-11-26 00:34:59,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 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) [2022-11-26 00:34:59,478 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-11-26 00:34:59,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-26 00:34:59,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:34:59,479 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1] [2022-11-26 00:34:59,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-26 00:34:59,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-26 00:34:59,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-26 00:35:00,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:35:00,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:35:00,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:00,081 INFO L85 PathProgramCache]: Analyzing trace with hash -779438813, now seen corresponding path program 4 times [2022-11-26 00:35:00,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:35:00,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605676398] [2022-11-26 00:35:00,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:35:00,081 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 [2022-11-26 00:35:00,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:35:00,087 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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) [2022-11-26 00:35:00,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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 (12)] Waiting until timeout for monitored process [2022-11-26 00:35:00,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:35:00,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-26 00:35:00,235 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:35:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:35:00,459 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-26 00:35:00,459 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:35:00,460 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:35:00,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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 (12)] Forceful destruction successful, exit code 0 [2022-11-26 00:35:00,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:35:00,678 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2022-11-26 00:35:00,681 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:35:00,786 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,786 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,789 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,789 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,789 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,789 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,789 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,790 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,790 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,790 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,790 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,790 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,790 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,790 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,790 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,791 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:35:00 BoogieIcfgContainer [2022-11-26 00:35:00,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:35:00,826 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:35:00,827 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:35:00,827 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:35:00,827 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:34:08" (3/4) ... [2022-11-26 00:35:00,829 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-26 00:35:00,849 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,849 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,850 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,850 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,850 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,850 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,850 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,850 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,850 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,851 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,851 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,851 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,851 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,851 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,851 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,851 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:35:00,922 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:35:00,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:35:00,923 INFO L158 Benchmark]: Toolchain (without parser) took 53134.45ms. Allocated memory was 62.9MB in the beginning and 394.3MB in the end (delta: 331.4MB). Free memory was 37.8MB in the beginning and 355.6MB in the end (delta: -317.8MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2022-11-26 00:35:00,924 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:35:00,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.00ms. Allocated memory is still 62.9MB. Free memory was 37.6MB in the beginning and 27.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:35:00,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.88ms. Allocated memory is still 62.9MB. Free memory was 27.0MB in the beginning and 25.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:35:00,925 INFO L158 Benchmark]: Boogie Preprocessor took 60.55ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 25.1MB in the beginning and 68.5MB in the end (delta: -43.4MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2022-11-26 00:35:00,925 INFO L158 Benchmark]: RCFGBuilder took 394.00ms. Allocated memory is still 88.1MB. Free memory was 68.1MB in the beginning and 58.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:35:00,925 INFO L158 Benchmark]: TraceAbstraction took 52286.16ms. Allocated memory was 88.1MB in the beginning and 394.3MB in the end (delta: 306.2MB). Free memory was 57.6MB in the beginning and 365.0MB in the end (delta: -307.5MB). Peak memory consumption was 193.7MB. Max. memory is 16.1GB. [2022-11-26 00:35:00,926 INFO L158 Benchmark]: Witness Printer took 96.37ms. Allocated memory is still 394.3MB. Free memory was 365.0MB in the beginning and 355.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-26 00:35:00,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.00ms. Allocated memory is still 62.9MB. Free memory was 37.6MB in the beginning and 27.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.88ms. Allocated memory is still 62.9MB. Free memory was 27.0MB in the beginning and 25.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.55ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 25.1MB in the beginning and 68.5MB in the end (delta: -43.4MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * RCFGBuilder took 394.00ms. Allocated memory is still 88.1MB. Free memory was 68.1MB in the beginning and 58.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 52286.16ms. Allocated memory was 88.1MB in the beginning and 394.3MB in the end (delta: 306.2MB). Free memory was 57.6MB in the beginning and 365.0MB in the end (delta: -307.5MB). Peak memory consumption was 193.7MB. Max. memory is 16.1GB. * Witness Printer took 96.37ms. Allocated memory is still 394.3MB. Free memory was 365.0MB in the beginning and 355.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. 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 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L32] const SORT_4 var_5 = 0; [L33] const SORT_4 var_8 = 1; [L34] const SORT_4 var_13 = mask_SORT_4; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L39] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L41] SORT_4 init_7_arg_1 = var_5; [L42] state_6 = init_7_arg_1 VAL [init_7_arg_1=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, state_6=0, var_13=15, var_5=0, var_8=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=1, state_6=1, var_10=1, var_10_arg_0=1, var_10_arg_1=1, var_10_arg_2=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=1, var_13=15, var_14=0, var_14_arg_0=0, var_14_arg_1=15, var_5=0, var_8=1, var_9=1, var_9_arg_0=0, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=2, state_6=2, var_10=2, var_10_arg_0=1, var_10_arg_1=2, var_10_arg_2=1, var_11=2, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=2, var_13=15, var_14=0, var_14_arg_0=1, var_14_arg_1=15, var_5=0, var_8=1, var_9=2, var_9_arg_0=1, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=3, state_6=3, var_10=3, var_10_arg_0=1, var_10_arg_1=3, var_10_arg_2=2, var_11=3, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=3, var_13=15, var_14=0, var_14_arg_0=2, var_14_arg_1=15, var_5=0, var_8=1, var_9=3, var_9_arg_0=2, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=4, state_6=4, var_10=4, var_10_arg_0=1, var_10_arg_1=4, var_10_arg_2=3, var_11=4, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=4, var_13=15, var_14=0, var_14_arg_0=3, var_14_arg_1=15, var_5=0, var_8=1, var_9=4, var_9_arg_0=3, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=5, state_6=5, var_10=5, var_10_arg_0=1, var_10_arg_1=5, var_10_arg_2=4, var_11=5, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=5, var_13=15, var_14=0, var_14_arg_0=4, var_14_arg_1=15, var_5=0, var_8=1, var_9=5, var_9_arg_0=4, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=6, state_6=6, var_10=6, var_10_arg_0=1, var_10_arg_1=6, var_10_arg_2=5, var_11=6, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=6, var_13=15, var_14=0, var_14_arg_0=5, var_14_arg_1=15, var_5=0, var_8=1, var_9=6, var_9_arg_0=5, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=7, state_6=7, var_10=7, var_10_arg_0=1, var_10_arg_1=7, var_10_arg_2=6, var_11=7, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=7, var_13=15, var_14=0, var_14_arg_0=6, var_14_arg_1=15, var_5=0, var_8=1, var_9=7, var_9_arg_0=6, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=8, state_6=8, var_10=8, var_10_arg_0=1, var_10_arg_1=8, var_10_arg_2=7, var_11=8, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=8, var_13=15, var_14=0, var_14_arg_0=7, var_14_arg_1=15, var_5=0, var_8=1, var_9=8, var_9_arg_0=7, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=9, state_6=9, var_10=9, var_10_arg_0=1, var_10_arg_1=9, var_10_arg_2=8, var_11=9, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=9, var_13=15, var_14=0, var_14_arg_0=8, var_14_arg_1=15, var_5=0, var_8=1, var_9=9, var_9_arg_0=8, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=10, state_6=10, var_10=10, var_10_arg_0=1, var_10_arg_1=10, var_10_arg_2=9, var_11=10, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=10, var_13=15, var_14=0, var_14_arg_0=9, var_14_arg_1=15, var_5=0, var_8=1, var_9=10, var_9_arg_0=9, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=11, state_6=11, var_10=11, var_10_arg_0=1, var_10_arg_1=11, var_10_arg_2=10, var_11=11, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=11, var_13=15, var_14=0, var_14_arg_0=10, var_14_arg_1=15, var_5=0, var_8=1, var_9=11, var_9_arg_0=10, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=12, state_6=12, var_10=12, var_10_arg_0=1, var_10_arg_1=12, var_10_arg_2=11, var_11=12, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=12, var_13=15, var_14=0, var_14_arg_0=11, var_14_arg_1=15, var_5=0, var_8=1, var_9=12, var_9_arg_0=11, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=13, state_6=13, var_10=13, var_10_arg_0=1, var_10_arg_1=13, var_10_arg_2=12, var_11=13, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=13, var_13=15, var_14=0, var_14_arg_0=12, var_14_arg_1=15, var_5=0, var_8=1, var_9=13, var_9_arg_0=12, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=14, state_6=14, var_10=14, var_10_arg_0=1, var_10_arg_1=14, var_10_arg_2=13, var_11=14, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=14, var_13=15, var_14=0, var_14_arg_0=13, var_14_arg_1=15, var_5=0, var_8=1, var_9=14, var_9_arg_0=13, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=15, state_6=15, var_10=15, var_10_arg_0=1, var_10_arg_1=15, var_10_arg_2=14, var_11=15, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=15, var_13=15, var_14=0, var_14_arg_0=14, var_14_arg_1=15, var_5=0, var_8=1, var_9=15, var_9_arg_0=14, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.1s, OverallIterations: 5, TraceHistogramMax: 16, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 95 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 135 IncrementalHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 17 mSDtfsCounter, 135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 299 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 13.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=4, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 40.5s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 274 ConstructedInterpolants, 0 QuantifiedInterpolants, 88051 SizeOfPredicates, 559 NumberOfNonLiveVariables, 946 ConjunctsInSsa, 551 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 0/564 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 proved your program to be incorrect! [2022-11-26 00:35:00,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1851263c-9a48-4583-9be6-f2f3ddd0ea6c/bin/utaipan-ByfvJB40ur/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE