./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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 59f3fcefe82932d9599ddaeb009b9f6bf8c17f6b22b4de4159cfdd4dc66707c2 --- 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 05:08:19,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:08:19,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:08:19,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:08:19,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:08:19,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:08:19,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:08:19,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:08:19,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:08:19,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:08:19,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:08:19,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:08:19,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:08:19,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:08:19,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:08:19,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:08:19,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:08:19,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:08:19,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:08:19,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:08:19,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:08:19,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:08:19,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:08:19,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:08:19,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:08:19,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:08:19,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:08:19,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:08:19,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:08:19,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:08:19,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:08:19,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:08:19,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:08:19,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:08:19,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:08:19,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:08:19,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:08:19,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:08:19,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:08:19,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:08:19,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:08:19,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 05:08:19,071 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:08:19,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:08:19,071 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:08:19,071 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:08:19,072 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:08:19,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:08:19,072 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:08:19,072 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:08:19,072 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:08:19,072 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:08:19,073 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:08:19,073 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:08:19,073 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:08:19,073 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:08:19,073 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:08:19,074 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:08:19,074 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:08:19,074 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:08:19,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:08:19,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:08:19,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:08:19,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:08:19,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:08:19,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:08:19,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:08:19,076 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:08:19,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:08:19,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:08:19,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:08:19,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:08:19,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:08:19,077 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:08:19,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:08:19,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:08:19,077 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:08:19,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:08:19,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:08:19,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:08:19,078 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_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59f3fcefe82932d9599ddaeb009b9f6bf8c17f6b22b4de4159cfdd4dc66707c2 [2022-12-14 05:08:19,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:08:19,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:08:19,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:08:19,275 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:08:19,276 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:08:19,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c [2022-12-14 05:08:21,807 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:08:21,976 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:08:21,976 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c [2022-12-14 05:08:21,981 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/data/64d40c6b1/a512085b0c1c44d888f0a6425ac67ce9/FLAG4319190b9 [2022-12-14 05:08:22,374 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/data/64d40c6b1/a512085b0c1c44d888f0a6425ac67ce9 [2022-12-14 05:08:22,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:08:22,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:08:22,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:08:22,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:08:22,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:08:22,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292cb790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22, skipping insertion in model container [2022-12-14 05:08:22,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:08:22,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:08:22,503 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_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c[1107,1120] [2022-12-14 05:08:22,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:08:22,530 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:08:22,537 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_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c[1107,1120] [2022-12-14 05:08:22,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:08:22,555 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:08:22,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22 WrapperNode [2022-12-14 05:08:22,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:08:22,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:08:22,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:08:22,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:08:22,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,578 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-12-14 05:08:22,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:08:22,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:08:22,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:08:22,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:08:22,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,591 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:08:22,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:08:22,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:08:22,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:08:22,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22" (1/1) ... [2022-12-14 05:08:22,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:08:22,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:08:22,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:08:22,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:08:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:08:22,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:08:22,714 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:08:22,715 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:08:22,829 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:08:22,845 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:08:22,845 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:08:22,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:08:22 BoogieIcfgContainer [2022-12-14 05:08:22,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:08:22,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:08:22,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:08:22,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:08:22,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:08:22" (1/3) ... [2022-12-14 05:08:22,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3180d557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:08:22, skipping insertion in model container [2022-12-14 05:08:22,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:22" (2/3) ... [2022-12-14 05:08:22,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3180d557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:08:22, skipping insertion in model container [2022-12-14 05:08:22,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:08:22" (3/3) ... [2022-12-14 05:08:22,856 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.swap_two.c [2022-12-14 05:08:22,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:08:22,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:08:22,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:08:22,913 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;@4d46ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:08:22,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:08:22,916 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 05:08:22,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 05:08:22,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:08:22,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 05:08:22,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:08:22,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:08:22,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 05:08:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:08:22,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102425093] [2022-12-14 05:08:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:08:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:08:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:08:23,080 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 05:08:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:08:23,183 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 05:08:23,185 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 05:08:23,186 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 05:08:23,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:08:23,192 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 05:08:23,196 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:08:23,208 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 05:08:23,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:08:23 BoogieIcfgContainer [2022-12-14 05:08:23,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:08:23,214 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:08:23,214 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:08:23,214 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:08:23,214 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:08:22" (3/4) ... [2022-12-14 05:08:23,217 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 05:08:23,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:08:23,218 INFO L158 Benchmark]: Toolchain (without parser) took 840.94ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 84.9MB in the beginning and 119.1MB in the end (delta: -34.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:08:23,218 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:08:23,218 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.92ms. Allocated memory is still 117.4MB. Free memory was 84.9MB in the beginning and 74.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 05:08:23,219 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.49ms. Allocated memory is still 117.4MB. Free memory was 74.3MB in the beginning and 72.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:08:23,219 INFO L158 Benchmark]: Boogie Preprocessor took 14.60ms. Allocated memory is still 117.4MB. Free memory was 72.7MB in the beginning and 71.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:08:23,220 INFO L158 Benchmark]: RCFGBuilder took 254.32ms. Allocated memory is still 117.4MB. Free memory was 71.2MB in the beginning and 58.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 05:08:23,220 INFO L158 Benchmark]: TraceAbstraction took 363.13ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 57.7MB in the beginning and 119.1MB in the end (delta: -61.5MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2022-12-14 05:08:23,220 INFO L158 Benchmark]: Witness Printer took 2.96ms. Allocated memory is still 148.9MB. Free memory is still 119.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:08:23,223 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.92ms. Allocated memory is still 117.4MB. Free memory was 84.9MB in the beginning and 74.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.49ms. Allocated memory is still 117.4MB. Free memory was 74.3MB in the beginning and 72.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.60ms. Allocated memory is still 117.4MB. Free memory was 72.7MB in the beginning and 71.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 254.32ms. Allocated memory is still 117.4MB. Free memory was 71.2MB in the beginning and 58.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 363.13ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 57.7MB in the beginning and 119.1MB in the end (delta: -61.5MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. * Witness Printer took 2.96ms. Allocated memory is still 148.9MB. Free memory is still 119.1MB. 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 72, overapproximation of bitwiseOr at line 70, overapproximation of bitwiseAnd at line 57. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 20); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (20 - 1); [L31] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 32); [L32] const SORT_8 msb_SORT_8 = (SORT_8)1 << (32 - 1); [L34] const SORT_4 var_5 = 100; [L35] const SORT_8 var_10 = 100; [L36] const SORT_8 var_13 = 200; [L37] const SORT_1 var_18 = 1; [L38] const SORT_4 var_22 = 200; [L40] SORT_1 input_2; [L41] SORT_1 input_3; [L43] SORT_4 state_6 = __VERIFIER_nondet_uint() & mask_SORT_4; [L44] SORT_4 state_23 = __VERIFIER_nondet_uint() & mask_SORT_4; [L46] SORT_4 init_7_arg_1 = var_5; [L47] state_6 = init_7_arg_1 [L48] SORT_4 init_24_arg_1 = var_22; [L49] state_23 = init_24_arg_1 VAL [init_24_arg_1=200, init_7_arg_1=100, mask_SORT_1=1, mask_SORT_4=4294967295, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_23=200, state_6=100, var_10=100, var_13=200, var_18=1, var_22=200, var_5=100] [L52] input_2 = __VERIFIER_nondet_uchar() [L53] input_3 = __VERIFIER_nondet_uchar() [L56] SORT_4 var_9_arg_0 = state_6; [L57] var_9_arg_0 = var_9_arg_0 & mask_SORT_4 [L58] SORT_8 var_9 = var_9_arg_0; [L59] SORT_8 var_11_arg_0 = var_9; [L60] SORT_8 var_11_arg_1 = var_10; [L61] SORT_1 var_11 = var_11_arg_0 == var_11_arg_1; [L62] SORT_4 var_12_arg_0 = state_6; [L63] var_12_arg_0 = var_12_arg_0 & mask_SORT_4 [L64] SORT_8 var_12 = var_12_arg_0; [L65] SORT_8 var_14_arg_0 = var_12; [L66] SORT_8 var_14_arg_1 = var_13; [L67] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L68] SORT_1 var_15_arg_0 = var_11; [L69] SORT_1 var_15_arg_1 = var_14; [L70] SORT_1 var_15 = var_15_arg_0 | var_15_arg_1; [L71] SORT_1 var_19_arg_0 = var_15; [L72] SORT_1 var_19 = ~var_19_arg_0; [L73] SORT_1 var_20_arg_0 = var_18; [L74] SORT_1 var_20_arg_1 = var_19; [L75] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L76] var_20 = var_20 & mask_SORT_1 [L77] SORT_1 bad_21_arg_0 = var_20; [L78] CALL __VERIFIER_assert(!(bad_21_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 05:08:23,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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 59f3fcefe82932d9599ddaeb009b9f6bf8c17f6b22b4de4159cfdd4dc66707c2 --- 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 05:08:24,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:08:24,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:08:24,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:08:24,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:08:24,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:08:24,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:08:24,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:08:24,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:08:24,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:08:24,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:08:24,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:08:24,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:08:24,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:08:24,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:08:24,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:08:24,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:08:24,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:08:24,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:08:24,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:08:24,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:08:24,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:08:24,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:08:24,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:08:24,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:08:24,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:08:24,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:08:24,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:08:24,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:08:24,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:08:24,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:08:24,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:08:24,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:08:24,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:08:24,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:08:24,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:08:24,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:08:24,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:08:24,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:08:25,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:08:25,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:08:25,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 05:08:25,023 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:08:25,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:08:25,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:08:25,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:08:25,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:08:25,024 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:08:25,025 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:08:25,025 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:08:25,025 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:08:25,025 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:08:25,025 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:08:25,026 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:08:25,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:08:25,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:08:25,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:08:25,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:08:25,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:08:25,027 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 05:08:25,027 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 05:08:25,028 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 05:08:25,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:08:25,028 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:08:25,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:08:25,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:08:25,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 05:08:25,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:08:25,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:08:25,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:08:25,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:08:25,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:08:25,030 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 05:08:25,030 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 05:08:25,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:08:25,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:08:25,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 05:08:25,031 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_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59f3fcefe82932d9599ddaeb009b9f6bf8c17f6b22b4de4159cfdd4dc66707c2 [2022-12-14 05:08:25,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:08:25,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:08:25,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:08:25,268 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:08:25,268 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:08:25,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c [2022-12-14 05:08:27,891 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:08:28,064 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:08:28,065 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c [2022-12-14 05:08:28,073 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/data/210f7cb8b/2c762f73c468473ea399fc7ca5817f66/FLAG6c0ca7f0b [2022-12-14 05:08:28,088 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/data/210f7cb8b/2c762f73c468473ea399fc7ca5817f66 [2022-12-14 05:08:28,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:08:28,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:08:28,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:08:28,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:08:28,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:08:28,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612b6f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28, skipping insertion in model container [2022-12-14 05:08:28,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:08:28,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:08:28,222 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_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c[1107,1120] [2022-12-14 05:08:28,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:08:28,252 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:08:28,260 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_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c[1107,1120] [2022-12-14 05:08:28,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:08:28,280 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:08:28,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28 WrapperNode [2022-12-14 05:08:28,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:08:28,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:08:28,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:08:28,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:08:28,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,305 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-12-14 05:08:28,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:08:28,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:08:28,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:08:28,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:08:28,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,320 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:08:28,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:08:28,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:08:28,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:08:28,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28" (1/1) ... [2022-12-14 05:08:28,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:08:28,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:08:28,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:08:28,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:08:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:08:28,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:08:28,430 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:08:28,432 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:08:28,532 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:08:28,541 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:08:28,542 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:08:28,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:08:28 BoogieIcfgContainer [2022-12-14 05:08:28,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:08:28,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:08:28,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:08:28,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:08:28,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:08:28" (1/3) ... [2022-12-14 05:08:28,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3985e88c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:08:28, skipping insertion in model container [2022-12-14 05:08:28,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:28" (2/3) ... [2022-12-14 05:08:28,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3985e88c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:08:28, skipping insertion in model container [2022-12-14 05:08:28,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:08:28" (3/3) ... [2022-12-14 05:08:28,551 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.swap_two.c [2022-12-14 05:08:28,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:08:28,565 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:08:28,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:08:28,604 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;@3b21d338, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:08:28,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:08:28,607 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 05:08:28,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 05:08:28,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:08:28,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 05:08:28,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:08:28,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:08:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 05:08:28,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:08:28,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133315902] [2022-12-14 05:08:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:08:28,629 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 05:08:28,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:08:28,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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 05:08:28,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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 05:08:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:08:28,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 05:08:28,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:08:28,904 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 05:08:28,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:08:28,905 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:08:28,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133315902] [2022-12-14 05:08:28,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133315902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:08:28,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:08:28,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:08:28,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885503953] [2022-12-14 05:08:28,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:08:28,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:08:28,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:08:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:08:28,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:08:28,943 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 05:08:28,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:08:28,990 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 05:08:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:08:28,993 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 05:08:28,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:08:28,998 INFO L225 Difference]: With dead ends: 20 [2022-12-14 05:08:28,998 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 05:08:29,000 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 05:08:29,002 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 05:08:29,003 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 05:08:29,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 05:08:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 05:08:29,023 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 05:08:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 05:08:29,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 05:08:29,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:08:29,025 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 05:08:29,025 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 05:08:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 05:08:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 05:08:29,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:08:29,025 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 05:08:29,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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 05:08:29,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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 05:08:29,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:08:29,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:08:29,230 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 05:08:29,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:08:29,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238924517] [2022-12-14 05:08:29,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:08:29,233 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 05:08:29,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:08:29,236 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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 05:08:29,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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 05:08:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:08:29,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 05:08:29,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:08:29,524 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 05:08:29,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:08:29,768 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 05:08:29,768 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:08:29,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238924517] [2022-12-14 05:08:29,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238924517] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:08:29,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [334993487] [2022-12-14 05:08:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:08:29,770 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:08:29,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:08:29,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:08:29,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 05:08:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:08:29,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 05:08:29,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:08:29,929 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 05:08:29,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:08:30,036 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 05:08:30,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [334993487] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:08:30,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174201807] [2022-12-14 05:08:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:08:30,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:08:30,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:08:30,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:08:30,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:08:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:08:30,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 05:08:30,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:08:30,182 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 05:08:30,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:08:30,354 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 05:08:30,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174201807] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:08:30,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:08:30,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-12-14 05:08:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999549802] [2022-12-14 05:08:30,356 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:08:30,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 05:08:30,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:08:30,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 05:08:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:08:30,358 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:08:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:08:30,449 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-12-14 05:08:30,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:08:30,450 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 05:08:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:08:30,451 INFO L225 Difference]: With dead ends: 14 [2022-12-14 05:08:30,451 INFO L226 Difference]: Without dead ends: 12 [2022-12-14 05:08:30,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:08:30,453 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:08:30,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 14 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:08:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-12-14 05:08:30,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-12-14 05:08:30,457 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 05:08:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 05:08:30,458 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 05:08:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:08:30,458 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 05:08:30,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:08:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 05:08:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 05:08:30,459 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:08:30,459 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 05:08:30,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 05:08:30,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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 05:08:30,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:08:31,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:08:31,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:08:31,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:08:31,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 05:08:31,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:08:31,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025269474] [2022-12-14 05:08:31,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:08:31,068 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 05:08:31,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:08:31,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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 05:08:31,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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 05:08:31,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:08:31,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:08:31,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 05:08:31,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:08:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:08:31,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:08:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:08:31,439 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:08:31,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025269474] [2022-12-14 05:08:31,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025269474] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:08:31,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [678380279] [2022-12-14 05:08:31,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:08:31,440 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:08:31,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:08:31,441 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:08:31,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 05:08:31,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:08:31,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:08:31,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 05:08:31,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:08:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:08:31,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:08:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:08:31,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [678380279] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:08:31,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546873879] [2022-12-14 05:08:31,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:08:31,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:08:31,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:08:31,717 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:08:31,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:08:31,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:08:31,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:08:31,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 05:08:31,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:08:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:08:31,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:08:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:08:31,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546873879] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:08:31,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:08:31,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 05:08:31,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465590501] [2022-12-14 05:08:31,950 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:08:31,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 05:08:31,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:08:31,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 05:08:31,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:08:31,952 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 05:08:32,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:08:32,037 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-12-14 05:08:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:08:32,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 05:08:32,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:08:32,038 INFO L225 Difference]: With dead ends: 12 [2022-12-14 05:08:32,038 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 05:08:32,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:08:32,039 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:08:32,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 10 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:08:32,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 05:08:32,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 05:08:32,040 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 05:08:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 05:08:32,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-12-14 05:08:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:08:32,040 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 05:08:32,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 05:08:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 05:08:32,041 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 05:08:32,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 05:08:32,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 05:08:32,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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 05:08:32,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 05:08:32,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 05:08:32,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 05:08:32,757 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 05:08:32,757 INFO L895 garLoopResultBuilder]: At program point L50-2(lines 50 85) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse1 (= (_ bv200 32) |ULTIMATE.start_main_~var_13~0#1|)) (.cse2 (= (_ bv100 32) |ULTIMATE.start_main_~var_10~0#1|)) (.cse3 (= (_ bv1048575 32) |ULTIMATE.start_main_~mask_SORT_4~0#1|))) (or (and .cse0 .cse1 .cse2 (= (_ bv100 32) |ULTIMATE.start_main_~state_6~0#1|) .cse3 (= (_ bv200 32) |ULTIMATE.start_main_~state_23~0#1|)) (and .cse0 (= (_ bv200 32) |ULTIMATE.start_main_~state_6~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse1 .cse2 .cse3 (= (_ bv100 32) |ULTIMATE.start_main_~state_23~0#1|)))) [2022-12-14 05:08:32,757 INFO L899 garLoopResultBuilder]: For program point L50-3(lines 50 85) no Hoare annotation was computed. [2022-12-14 05:08:32,757 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 05:08:32,758 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 87) the Hoare annotation is: false [2022-12-14 05:08:32,758 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 05:08:32,758 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 05:08:32,758 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-12-14 05:08:32,758 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-12-14 05:08:32,758 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-12-14 05:08:32,758 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-12-14 05:08:32,762 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2022-12-14 05:08:32,764 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:08:32,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:08:32 BoogieIcfgContainer [2022-12-14 05:08:32,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:08:32,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:08:32,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:08:32,774 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:08:32,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:08:28" (3/4) ... [2022-12-14 05:08:32,776 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 05:08:32,783 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-14 05:08:32,783 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 05:08:32,783 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 05:08:32,805 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 05:08:32,805 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:08:32,806 INFO L158 Benchmark]: Toolchain (without parser) took 4714.30ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 79.4MB in the beginning and 57.2MB in the end (delta: 22.2MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-12-14 05:08:32,806 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory is still 43.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:08:32,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.94ms. Allocated memory is still 100.7MB. Free memory was 79.2MB in the beginning and 68.4MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 05:08:32,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.80ms. Allocated memory is still 100.7MB. Free memory was 68.4MB in the beginning and 66.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:08:32,806 INFO L158 Benchmark]: Boogie Preprocessor took 16.71ms. Allocated memory is still 100.7MB. Free memory was 66.8MB in the beginning and 65.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:08:32,806 INFO L158 Benchmark]: RCFGBuilder took 221.13ms. Allocated memory is still 100.7MB. Free memory was 65.4MB in the beginning and 80.1MB in the end (delta: -14.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 05:08:32,807 INFO L158 Benchmark]: TraceAbstraction took 4228.10ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 79.1MB in the beginning and 60.4MB in the end (delta: 18.8MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2022-12-14 05:08:32,807 INFO L158 Benchmark]: Witness Printer took 31.48ms. Allocated memory is still 121.6MB. Free memory was 60.4MB in the beginning and 57.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 05:08:32,808 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 65.0MB. Free memory is still 43.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.94ms. Allocated memory is still 100.7MB. Free memory was 79.2MB in the beginning and 68.4MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.80ms. Allocated memory is still 100.7MB. Free memory was 68.4MB in the beginning and 66.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.71ms. Allocated memory is still 100.7MB. Free memory was 66.8MB in the beginning and 65.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 221.13ms. Allocated memory is still 100.7MB. Free memory was 65.4MB in the beginning and 80.1MB in the end (delta: -14.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4228.10ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 79.1MB in the beginning and 60.4MB in the end (delta: 18.8MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. * Witness Printer took 31.48ms. Allocated memory is still 121.6MB. Free memory was 60.4MB in the beginning and 57.2MB 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: 4.2s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 11 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 43 HoareAnnotationTreeSize, 2 FomulaSimplifications, 4 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 33 QuantifiedInterpolants, 2141 SizeOfPredicates, 159 NumberOfNonLiveVariables, 553 ConjunctsInSsa, 168 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 6/54 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: 50]: Loop Invariant Derived loop invariant: (((((1bv8 == mask_SORT_1 && 200bv32 == var_13) && 100bv32 == var_10) && 100bv32 == state_6) && 1048575bv32 == mask_SORT_4) && 200bv32 == state_23) || ((((((1bv8 == mask_SORT_1 && 200bv32 == state_6) && cond == 1bv32) && 200bv32 == var_13) && 100bv32 == var_10) && 1048575bv32 == mask_SORT_4) && 100bv32 == state_23) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-12-14 05:08:32,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abf11b26-3a18-4b0b-9f31-e3ea52d2fe57/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