./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3f80ae0ffd409ff2e33efb5f94d125906ee99568b94f1fb765fcd8cdc265af1c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:38:21,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:38:21,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:38:21,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:38:21,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:38:21,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:38:21,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:38:21,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:38:21,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:38:21,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:38:21,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:38:21,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:38:21,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:38:21,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:38:21,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:38:21,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:38:21,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:38:21,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:38:21,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:38:21,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:38:21,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:38:21,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:38:21,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:38:21,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:38:21,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:38:21,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:38:21,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:38:21,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:38:21,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:38:21,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:38:21,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:38:21,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:38:21,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:38:21,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:38:21,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:38:21,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:38:21,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:38:21,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:38:21,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:38:21,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:38:21,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:38:21,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 09:38:21,475 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:38:21,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:38:21,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:38:21,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:38:21,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:38:21,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:38:21,477 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:38:21,477 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:38:21,477 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:38:21,477 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:38:21,477 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:38:21,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:38:21,478 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:38:21,478 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:38:21,478 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:38:21,478 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:38:21,478 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:38:21,478 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:38:21,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:38:21,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:38:21,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:38:21,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:38:21,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:38:21,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:38:21,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:38:21,480 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:38:21,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:38:21,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:38:21,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:38:21,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:38:21,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:38:21,482 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:38:21,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:38:21,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:38:21,482 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:38:21,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:38:21,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:38:21,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:38:21,483 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_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f80ae0ffd409ff2e33efb5f94d125906ee99568b94f1fb765fcd8cdc265af1c [2022-12-14 09:38:21,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:38:21,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:38:21,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:38:21,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:38:21,687 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:38:21,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c [2022-12-14 09:38:24,324 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:38:24,465 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:38:24,465 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c [2022-12-14 09:38:24,470 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/data/ee0f871be/bc00645fca76451fa54f6f50d7d5cfa0/FLAG4c6593a32 [2022-12-14 09:38:24,480 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/data/ee0f871be/bc00645fca76451fa54f6f50d7d5cfa0 [2022-12-14 09:38:24,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:38:24,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:38:24,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:38:24,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:38:24,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:38:24,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@665c9eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24, skipping insertion in model container [2022-12-14 09:38:24,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:38:24,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:38:24,596 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_6976e26a-2d4e-49a1-a4bd-b634f9557549/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c[1107,1120] [2022-12-14 09:38:24,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:38:24,632 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:38:24,642 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_6976e26a-2d4e-49a1-a4bd-b634f9557549/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c[1107,1120] [2022-12-14 09:38:24,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:38:24,677 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:38:24,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24 WrapperNode [2022-12-14 09:38:24,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:38:24,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:38:24,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:38:24,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:38:24,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,706 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 131 [2022-12-14 09:38:24,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:38:24,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:38:24,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:38:24,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:38:24,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,723 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:38:24,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:38:24,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:38:24,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:38:24,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24" (1/1) ... [2022-12-14 09:38:24,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:38:24,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:38:24,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:38:24,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:38:24,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:38:24,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:38:24,856 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:38:24,858 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:38:25,046 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:38:25,061 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:38:25,061 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 09:38:25,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:38:25 BoogieIcfgContainer [2022-12-14 09:38:25,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:38:25,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:38:25,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:38:25,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:38:25,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:38:24" (1/3) ... [2022-12-14 09:38:25,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e08962a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:38:25, skipping insertion in model container [2022-12-14 09:38:25,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:24" (2/3) ... [2022-12-14 09:38:25,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e08962a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:38:25, skipping insertion in model container [2022-12-14 09:38:25,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:38:25" (3/3) ... [2022-12-14 09:38:25,069 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b06.c [2022-12-14 09:38:25,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:38:25,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:38:25,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:38:25,126 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5395f60e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:38:25,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:38:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:25,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 09:38:25,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:38:25,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 09:38:25,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:38:25,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:38:25,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 09:38:25,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:38:25,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317939188] [2022-12-14 09:38:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:38:25,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:38:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:38:25,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 09:38:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:38:25,428 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 09:38:25,430 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 09:38:25,431 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 09:38:25,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:38:25,437 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 09:38:25,441 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:38:25,457 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 09:38:25,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:38:25 BoogieIcfgContainer [2022-12-14 09:38:25,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:38:25,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:38:25,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:38:25,466 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:38:25,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:38:25" (3/4) ... [2022-12-14 09:38:25,469 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 09:38:25,469 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:38:25,471 INFO L158 Benchmark]: Toolchain (without parser) took 986.98ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 90.9MB in the beginning and 100.0MB in the end (delta: -9.1MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2022-12-14 09:38:25,471 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 96.1MB in the beginning and 96.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:38:25,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.45ms. Allocated memory is still 121.6MB. Free memory was 90.7MB in the beginning and 78.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 09:38:25,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.98ms. Allocated memory is still 121.6MB. Free memory was 78.4MB in the beginning and 76.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:38:25,473 INFO L158 Benchmark]: Boogie Preprocessor took 18.71ms. Allocated memory is still 121.6MB. Free memory was 76.2MB in the beginning and 74.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:38:25,474 INFO L158 Benchmark]: RCFGBuilder took 336.98ms. Allocated memory is still 121.6MB. Free memory was 74.7MB in the beginning and 55.0MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 09:38:25,474 INFO L158 Benchmark]: TraceAbstraction took 400.21ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 54.1MB in the beginning and 100.0MB in the end (delta: -45.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:38:25,474 INFO L158 Benchmark]: Witness Printer took 4.18ms. Allocated memory is still 146.8MB. Free memory is still 100.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:38:25,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 96.1MB in the beginning and 96.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.45ms. Allocated memory is still 121.6MB. Free memory was 90.7MB in the beginning and 78.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.98ms. Allocated memory is still 121.6MB. Free memory was 78.4MB in the beginning and 76.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.71ms. Allocated memory is still 121.6MB. Free memory was 76.2MB in the beginning and 74.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 336.98ms. Allocated memory is still 121.6MB. Free memory was 74.7MB in the beginning and 55.0MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 400.21ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 54.1MB in the beginning and 100.0MB in the end (delta: -45.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.18ms. Allocated memory is still 146.8MB. Free memory is still 100.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 85, overapproximation of bitwiseAnd at line 63. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 2); [L29] const SORT_11 msb_SORT_11 = (SORT_11)1 << (2 - 1); [L31] const SORT_15 mask_SORT_15 = (SORT_15)-1 >> (sizeof(SORT_15) * 8 - 32); [L32] const SORT_15 msb_SORT_15 = (SORT_15)1 << (32 - 1); [L34] const SORT_1 var_5 = 0; [L35] const SORT_11 var_12 = 0; [L36] const SORT_15 var_17 = 2; [L37] const SORT_1 var_22 = 1; [L38] const SORT_11 var_39 = 1; [L40] SORT_1 input_2; [L41] SORT_1 input_3; [L42] SORT_1 input_4; [L43] SORT_11 input_26; [L44] SORT_11 input_40; [L45] SORT_1 input_45; [L47] SORT_1 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L49] SORT_11 state_13 = __VERIFIER_nondet_uchar() & mask_SORT_11; [L50] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L52] SORT_1 init_7_arg_1 = var_5; [L53] state_6 = init_7_arg_1 [L54] SORT_1 init_9_arg_1 = var_5; [L55] state_8 = init_9_arg_1 [L56] SORT_11 init_14_arg_1 = var_12; [L57] state_13 = init_14_arg_1 [L58] SORT_1 init_32_arg_1 = var_5; [L59] state_31 = init_32_arg_1 VAL [init_14_arg_1=0, init_32_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_11=3, mask_SORT_15=4294967295, msb_SORT_1=1, msb_SORT_11=2, msb_SORT_15=2147483648, state_13=0, state_31=0, state_6=0, state_8=0, var_12=0, var_17=2, var_22=1, var_39=1, var_5=0] [L62] input_2 = __VERIFIER_nondet_uchar() [L63] input_2 = input_2 & mask_SORT_1 [L64] input_3 = __VERIFIER_nondet_uchar() [L65] input_3 = input_3 & mask_SORT_1 [L66] input_4 = __VERIFIER_nondet_uchar() [L67] input_26 = __VERIFIER_nondet_uchar() [L68] input_40 = __VERIFIER_nondet_uchar() [L69] input_45 = __VERIFIER_nondet_uchar() [L72] SORT_1 var_10_arg_0 = state_6; [L73] SORT_1 var_10_arg_1 = state_8; [L74] SORT_1 var_10 = var_10_arg_0 == var_10_arg_1; [L75] SORT_11 var_16_arg_0 = state_13; [L76] var_16_arg_0 = var_16_arg_0 & mask_SORT_11 [L77] SORT_15 var_16 = var_16_arg_0; [L78] SORT_15 var_18_arg_0 = var_16; [L79] SORT_15 var_18_arg_1 = var_17; [L80] SORT_1 var_18 = var_18_arg_0 != var_18_arg_1; [L81] SORT_1 var_19_arg_0 = var_10; [L82] SORT_1 var_19_arg_1 = var_18; [L83] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L84] SORT_1 var_23_arg_0 = var_19; [L85] SORT_1 var_23 = ~var_23_arg_0; [L86] SORT_1 var_24_arg_0 = var_22; [L87] SORT_1 var_24_arg_1 = var_23; [L88] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L89] var_24 = var_24 & mask_SORT_1 [L90] SORT_1 bad_25_arg_0 = var_24; [L91] CALL __VERIFIER_assert(!(bad_25_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 09:38:25,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3f80ae0ffd409ff2e33efb5f94d125906ee99568b94f1fb765fcd8cdc265af1c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:38:27,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:38:27,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:38:27,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:38:27,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:38:27,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:38:27,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:38:27,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:38:27,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:38:27,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:38:27,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:38:27,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:38:27,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:38:27,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:38:27,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:38:27,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:38:27,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:38:27,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:38:27,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:38:27,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:38:27,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:38:27,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:38:27,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:38:27,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:38:27,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:38:27,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:38:27,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:38:27,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:38:27,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:38:27,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:38:27,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:38:27,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:38:27,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:38:27,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:38:27,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:38:27,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:38:27,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:38:27,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:38:27,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:38:27,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:38:27,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:38:27,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 09:38:27,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:38:27,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:38:27,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:38:27,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:38:27,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:38:27,168 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:38:27,168 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:38:27,168 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:38:27,168 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:38:27,168 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:38:27,169 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:38:27,169 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:38:27,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:38:27,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:38:27,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:38:27,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:38:27,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:38:27,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 09:38:27,170 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 09:38:27,170 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 09:38:27,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:38:27,170 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:38:27,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:38:27,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:38:27,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 09:38:27,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:38:27,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:38:27,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:38:27,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:38:27,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:38:27,171 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 09:38:27,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 09:38:27,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:38:27,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:38:27,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 09:38:27,171 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_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f80ae0ffd409ff2e33efb5f94d125906ee99568b94f1fb765fcd8cdc265af1c [2022-12-14 09:38:27,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:38:27,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:38:27,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:38:27,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:38:27,433 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:38:27,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c [2022-12-14 09:38:29,991 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:38:30,137 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:38:30,137 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c [2022-12-14 09:38:30,144 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/data/1a5333fb4/9cdc2ef100b44bdea270732723d93247/FLAG25e027989 [2022-12-14 09:38:30,155 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/data/1a5333fb4/9cdc2ef100b44bdea270732723d93247 [2022-12-14 09:38:30,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:38:30,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:38:30,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:38:30,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:38:30,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:38:30,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee31773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30, skipping insertion in model container [2022-12-14 09:38:30,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:38:30,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:38:30,290 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_6976e26a-2d4e-49a1-a4bd-b634f9557549/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c[1107,1120] [2022-12-14 09:38:30,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:38:30,340 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:38:30,348 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_6976e26a-2d4e-49a1-a4bd-b634f9557549/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c[1107,1120] [2022-12-14 09:38:30,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:38:30,382 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:38:30,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30 WrapperNode [2022-12-14 09:38:30,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:38:30,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:38:30,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:38:30,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:38:30,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,416 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 131 [2022-12-14 09:38:30,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:38:30,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:38:30,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:38:30,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:38:30,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,439 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:38:30,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:38:30,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:38:30,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:38:30,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30" (1/1) ... [2022-12-14 09:38:30,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:38:30,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:38:30,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:38:30,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:38:30,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:38:30,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:38:30,591 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:38:30,593 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:38:30,759 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:38:30,766 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:38:30,766 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 09:38:30,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:38:30 BoogieIcfgContainer [2022-12-14 09:38:30,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:38:30,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:38:30,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:38:30,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:38:30,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:38:30" (1/3) ... [2022-12-14 09:38:30,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd848b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:38:30, skipping insertion in model container [2022-12-14 09:38:30,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:38:30" (2/3) ... [2022-12-14 09:38:30,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd848b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:38:30, skipping insertion in model container [2022-12-14 09:38:30,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:38:30" (3/3) ... [2022-12-14 09:38:30,776 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b06.c [2022-12-14 09:38:30,791 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:38:30,791 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:38:30,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:38:30,833 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;@152d76f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:38:30,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:38:30,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:30,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 09:38:30,842 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:38:30,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 09:38:30,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:38:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:38:30,846 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 09:38:30,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:38:30,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452132562] [2022-12-14 09:38:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:38:30,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:38:30,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:38:30,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:38:30,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 09:38:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:38:30,926 WARN L261 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 09:38:30,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:38:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:31,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:38:31,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 09:38:31,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452132562] [2022-12-14 09:38:31,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452132562] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:38:31,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:38:31,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:38:31,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901858312] [2022-12-14 09:38:31,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:38:31,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:38:31,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 09:38:31,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:38:31,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:38:31,156 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:38:31,204 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 09:38:31,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:38:31,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 09:38:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:38:31,211 INFO L225 Difference]: With dead ends: 20 [2022-12-14 09:38:31,211 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 09:38:31,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:38:31,216 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:38:31,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:38:31,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 09:38:31,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 09:38:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 09:38:31,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 09:38:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:38:31,240 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 09:38:31,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 09:38:31,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 09:38:31,241 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:38:31,241 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 09:38:31,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:38:31,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:38:31,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:38:31,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:38:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 09:38:31,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:38:31,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18874363] [2022-12-14 09:38:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:38:31,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:38:31,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:38:31,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:38:31,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 09:38:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:38:31,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 09:38:31,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:38:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:31,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:38:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:32,787 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 09:38:32,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18874363] [2022-12-14 09:38:32,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18874363] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:38:32,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [749656662] [2022-12-14 09:38:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:38:32,788 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 09:38:32,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 09:38:32,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 09:38:32,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 09:38:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:38:32,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 09:38:32,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:38:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:33,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:38:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:33,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [749656662] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:38:33,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795619919] [2022-12-14 09:38:33,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:38:33,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:38:33,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:38:33,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:38:33,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 09:38:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:38:33,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-14 09:38:33,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:38:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:33,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:38:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:34,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795619919] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:38:34,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 09:38:34,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 6, 6] total 15 [2022-12-14 09:38:34,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365019940] [2022-12-14 09:38:34,445 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 09:38:34,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 09:38:34,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 09:38:34,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 09:38:34,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-12-14 09:38:34,446 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:34,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:38:34,659 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 09:38:34,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 09:38:34,660 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 09:38:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:38:34,660 INFO L225 Difference]: With dead ends: 16 [2022-12-14 09:38:34,660 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 09:38:34,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-12-14 09:38:34,661 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:38:34,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 25 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:38:34,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 09:38:34,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 09:38:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 09:38:34,664 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 09:38:34,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:38:34,664 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 09:38:34,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:34,665 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 09:38:34,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 09:38:34,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:38:34,665 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 09:38:34,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 09:38:34,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 09:38:35,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 09:38:35,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:38:35,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:38:35,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:38:35,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 09:38:35,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:38:35,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691934451] [2022-12-14 09:38:35,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 09:38:35,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:38:35,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:38:35,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:38:35,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 09:38:35,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 09:38:35,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:38:35,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-14 09:38:35,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:38:35,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:35,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:38:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:36,757 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 09:38:36,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691934451] [2022-12-14 09:38:36,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691934451] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:38:36,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1682854977] [2022-12-14 09:38:36,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 09:38:36,758 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 09:38:36,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 09:38:36,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 09:38:36,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 09:38:36,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 09:38:36,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:38:36,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-14 09:38:36,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:38:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:37,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:38:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:38,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1682854977] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:38:38,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503164913] [2022-12-14 09:38:38,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 09:38:38,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:38:38,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:38:38,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:38:38,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 09:38:38,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 09:38:38,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:38:38,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 69 conjunts are in the unsatisfiable core [2022-12-14 09:38:38,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:38:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:38,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:38:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:38:39,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503164913] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:38:39,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 09:38:39,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 7, 6] total 20 [2022-12-14 09:38:39,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65911999] [2022-12-14 09:38:39,343 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 09:38:39,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 09:38:39,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 09:38:39,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 09:38:39,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-12-14 09:38:39,344 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:38:39,590 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-12-14 09:38:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 09:38:39,590 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 09:38:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:38:39,590 INFO L225 Difference]: With dead ends: 19 [2022-12-14 09:38:39,590 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 09:38:39,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2022-12-14 09:38:39,591 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:38:39,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 39 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:38:39,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 09:38:39,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 09:38:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:39,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 09:38:39,594 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-12-14 09:38:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:38:39,594 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 09:38:39,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:39,595 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 09:38:39,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 09:38:39,595 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:38:39,595 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 09:38:39,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 09:38:39,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 09:38:40,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 09:38:40,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:38:40,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:38:40,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:38:40,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-12-14 09:38:40,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:38:40,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297294566] [2022-12-14 09:38:40,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:38:40,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:38:40,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:38:40,202 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:38:40,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 09:38:40,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 09:38:40,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:38:40,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-14 09:38:40,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:38:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 09:38:40,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:38:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 09:38:41,034 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 09:38:41,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297294566] [2022-12-14 09:38:41,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297294566] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:38:41,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1073211080] [2022-12-14 09:38:41,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:38:41,034 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 09:38:41,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 09:38:41,035 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 09:38:41,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 09:38:41,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 09:38:41,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:38:41,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-14 09:38:41,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:38:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 09:38:41,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:38:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 09:38:41,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1073211080] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:38:41,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990403215] [2022-12-14 09:38:41,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:38:41,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:38:41,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:38:41,706 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:38:41,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 09:38:41,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 09:38:41,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:38:41,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-14 09:38:41,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:38:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 09:38:42,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:38:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 09:38:42,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990403215] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:38:42,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 09:38:42,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 09:38:42,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438750919] [2022-12-14 09:38:42,345 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 09:38:42,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:38:42,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 09:38:42,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:38:42,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 09:38:42,347 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:38:42,412 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-12-14 09:38:42,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:38:42,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 09:38:42,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:38:42,413 INFO L225 Difference]: With dead ends: 15 [2022-12-14 09:38:42,413 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 09:38:42,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:38:42,414 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:38:42,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:38:42,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 09:38:42,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 09:38:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 09:38:42,415 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-12-14 09:38:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:38:42,415 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 09:38:42,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:38:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 09:38:42,415 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 09:38:42,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 09:38:42,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 09:38:42,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-12-14 09:38:42,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 09:38:43,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:38:43,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 09:38:43,128 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 09:38:43,128 INFO L895 garLoopResultBuilder]: At program point L60-2(lines 60 145) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~var_22~0#1|)) (.cse1 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse2 (= (_ bv1 8) |ULTIMATE.start_main_~var_39~0#1|)) (.cse5 (= |ULTIMATE.start_main_~state_6~0#1| (_ bv0 8))) (.cse4 (= (_ bv0 8) |ULTIMATE.start_main_~state_13~0#1|)) (.cse3 (= (_ bv3 8) |ULTIMATE.start_main_~mask_SORT_11~0#1|)) (.cse6 (= (_ bv2 32) |ULTIMATE.start_main_~var_17~0#1|)) (.cse7 (= |ULTIMATE.start_main_~var_12~0#1| (_ bv0 8)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~var_5~0#1| |ULTIMATE.start_main_~state_31~0#1|) .cse6 (= |ULTIMATE.start_main_~state_8~0#1| |ULTIMATE.start_main_~var_5~0#1|) .cse7 (= ((_ zero_extend 24) |ULTIMATE.start_main_~state_6~0#1|) ((_ zero_extend 24) |ULTIMATE.start_main_~state_8~0#1|))) (and .cse0 .cse1 (= |ULTIMATE.start_main_~var_5~0#1| (_ bv0 8)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse2 (or (and (= |ULTIMATE.start_main_~state_8~0#1| (_ bv0 8)) .cse5) (let ((.cse8 ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_1~0#1|))))) (and (= |ULTIMATE.start_main_~state_8~0#1| .cse8) (= |ULTIMATE.start_main_~state_6~0#1| .cse8)))) (or (= (_ bv1 8) |ULTIMATE.start_main_~state_13~0#1|) .cse4) .cse3 .cse6 .cse7))) [2022-12-14 09:38:43,128 INFO L899 garLoopResultBuilder]: For program point L60-3(lines 60 145) no Hoare annotation was computed. [2022-12-14 09:38:43,128 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 09:38:43,128 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 147) the Hoare annotation is: false [2022-12-14 09:38:43,128 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 09:38:43,128 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 09:38:43,129 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-12-14 09:38:43,129 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-12-14 09:38:43,129 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-12-14 09:38:43,129 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-12-14 09:38:43,131 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-12-14 09:38:43,132 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:38:43,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:38:43 BoogieIcfgContainer [2022-12-14 09:38:43,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:38:43,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:38:43,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:38:43,142 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:38:43,142 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:38:30" (3/4) ... [2022-12-14 09:38:43,144 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 09:38:43,151 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-14 09:38:43,151 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 09:38:43,152 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 09:38:43,178 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 09:38:43,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:38:43,179 INFO L158 Benchmark]: Toolchain (without parser) took 13019.60ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 62.1MB in the beginning and 54.1MB in the end (delta: 8.0MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2022-12-14 09:38:43,179 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory is still 30.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:38:43,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.46ms. Allocated memory is still 83.9MB. Free memory was 61.9MB in the beginning and 49.5MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 09:38:43,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.49ms. Allocated memory is still 83.9MB. Free memory was 49.5MB in the beginning and 47.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:38:43,179 INFO L158 Benchmark]: Boogie Preprocessor took 25.66ms. Allocated memory is still 83.9MB. Free memory was 47.4MB in the beginning and 45.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:38:43,180 INFO L158 Benchmark]: RCFGBuilder took 324.64ms. Allocated memory is still 83.9MB. Free memory was 45.9MB in the beginning and 52.6MB in the end (delta: -6.7MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-12-14 09:38:43,180 INFO L158 Benchmark]: TraceAbstraction took 12370.56ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 51.8MB in the beginning and 57.3MB in the end (delta: -5.5MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2022-12-14 09:38:43,180 INFO L158 Benchmark]: Witness Printer took 36.75ms. Allocated memory is still 121.6MB. Free memory was 57.3MB in the beginning and 54.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 09:38:43,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory is still 30.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.46ms. Allocated memory is still 83.9MB. Free memory was 61.9MB in the beginning and 49.5MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.49ms. Allocated memory is still 83.9MB. Free memory was 49.5MB in the beginning and 47.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.66ms. Allocated memory is still 83.9MB. Free memory was 47.4MB in the beginning and 45.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 324.64ms. Allocated memory is still 83.9MB. Free memory was 45.9MB in the beginning and 52.6MB in the end (delta: -6.7MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * TraceAbstraction took 12370.56ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 51.8MB in the beginning and 57.3MB in the end (delta: -5.5MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. * Witness Printer took 36.75ms. Allocated memory is still 121.6MB. Free memory was 57.3MB in the beginning and 54.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.3s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 54 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 15 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 140 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 93 HoareAnnotationTreeSize, 2 FomulaSimplifications, 103 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 104 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 104 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 184 ConstructedInterpolants, 67 QuantifiedInterpolants, 6928 SizeOfPredicates, 589 NumberOfNonLiveVariables, 1378 ConjunctsInSsa, 554 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 54/144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((((((((((1bv8 == var_22 && 1bv8 == mask_SORT_1) && 1bv8 == var_39) && 3bv8 == mask_SORT_11) && 0bv8 == state_13) && state_6 == 0bv8) && var_5 == state_31) && 2bv32 == var_17) && state_8 == var_5) && var_12 == 0bv8) && ~zero_extendFrom8To32(state_6) == ~zero_extendFrom8To32(state_8)) || (((((((((1bv8 == var_22 && 1bv8 == mask_SORT_1) && var_5 == 0bv8) && cond == 1bv32) && 1bv8 == var_39) && ((state_8 == 0bv8 && state_6 == 0bv8) || (state_8 == ~bvand32(1bv32, ~zero_extendFrom8To32(mask_SORT_1))[7:0] && state_6 == ~bvand32(1bv32, ~zero_extendFrom8To32(mask_SORT_1))[7:0]))) && (1bv8 == state_13 || 0bv8 == state_13)) && 3bv8 == mask_SORT_11) && 2bv32 == var_17) && var_12 == 0bv8) RESULT: Ultimate proved your program to be correct! [2022-12-14 09:38:43,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6976e26a-2d4e-49a1-a4bd-b634f9557549/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE