./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/trex03-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/trex03-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7 --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 32bit --witnessprinter.graph.data.programhash 29c557834e203d12f97e62cb37bc9610a1f74548790633adace18ef2039a6c0b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:38:18,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:38:18,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:38:18,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:38:18,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:38:18,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:38:18,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:38:18,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:38:18,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:38:18,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:38:18,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:38:18,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:38:18,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:38:18,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:38:18,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:38:18,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:38:18,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:38:18,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:38:18,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:38:18,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:38:18,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:38:18,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:38:18,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:38:18,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:38:18,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:38:18,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:38:18,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:38:18,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:38:18,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:38:18,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:38:18,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:38:18,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:38:18,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:38:18,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:38:18,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:38:18,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:38:18,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:38:18,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:38:18,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:38:18,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:38:18,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:38:18,613 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:38:18,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:38:18,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:38:18,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:38:18,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:38:18,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:38:18,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:38:18,648 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:38:18,649 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:38:18,656 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:38:18,657 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:38:18,657 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:38:18,657 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:38:18,658 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:38:18,658 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:38:18,658 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:38:18,658 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:38:18,659 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:38:18,659 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:38:18,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:38:18,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:38:18,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:38:18,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:38:18,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:38:18,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:38:18,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:38:18,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:38:18,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:38:18,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:38:18,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:38:18,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:38:18,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:38:18,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:38:18,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:38:18,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:38:18,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:38:18,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:38:18,664 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:38:18,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:38:18,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:38:18,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:38:18,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:38:18,671 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29c557834e203d12f97e62cb37bc9610a1f74548790633adace18ef2039a6c0b [2021-11-25 19:38:18,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:38:18,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:38:18,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:38:18,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:38:18,985 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:38:18,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/loops/trex03-1.c [2021-11-25 19:38:19,044 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/data/d1da929e7/41749e1a8c1540eea127058a3031abd9/FLAG11813dd19 [2021-11-25 19:38:19,490 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:38:19,490 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/sv-benchmarks/c/loops/trex03-1.c [2021-11-25 19:38:19,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/data/d1da929e7/41749e1a8c1540eea127058a3031abd9/FLAG11813dd19 [2021-11-25 19:38:19,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/data/d1da929e7/41749e1a8c1540eea127058a3031abd9 [2021-11-25 19:38:19,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:38:19,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:38:19,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:38:19,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:38:19,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:38:19,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:38:19" (1/1) ... [2021-11-25 19:38:19,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acfacd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19, skipping insertion in model container [2021-11-25 19:38:19,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:38:19" (1/1) ... [2021-11-25 19:38:19,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:38:19,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:38:19,728 WARN L230 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_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/sv-benchmarks/c/loops/trex03-1.c[320,333] [2021-11-25 19:38:19,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:38:19,758 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:38:19,771 WARN L230 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_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/sv-benchmarks/c/loops/trex03-1.c[320,333] [2021-11-25 19:38:19,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:38:19,790 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:38:19,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19 WrapperNode [2021-11-25 19:38:19,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:38:19,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:38:19,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:38:19,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:38:19,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19" (1/1) ... [2021-11-25 19:38:19,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19" (1/1) ... [2021-11-25 19:38:19,827 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2021-11-25 19:38:19,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:38:19,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:38:19,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:38:19,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:38:19,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19" (1/1) ... [2021-11-25 19:38:19,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19" (1/1) ... [2021-11-25 19:38:19,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19" (1/1) ... [2021-11-25 19:38:19,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19" (1/1) ... [2021-11-25 19:38:19,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19" (1/1) ... [2021-11-25 19:38:19,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19" (1/1) ... [2021-11-25 19:38:19,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19" (1/1) ... [2021-11-25 19:38:19,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:38:19,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:38:19,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:38:19,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:38:19,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19" (1/1) ... [2021-11-25 19:38:19,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:38:19,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:38:19,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:38:19,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:38:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:38:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:38:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:38:19,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:38:19,999 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:38:20,000 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:38:20,103 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:38:20,145 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:38:20,145 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:38:20,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:38:20 BoogieIcfgContainer [2021-11-25 19:38:20,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:38:20,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:38:20,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:38:20,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:38:20,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:38:19" (1/3) ... [2021-11-25 19:38:20,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cb5706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:38:20, skipping insertion in model container [2021-11-25 19:38:20,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:19" (2/3) ... [2021-11-25 19:38:20,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cb5706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:38:20, skipping insertion in model container [2021-11-25 19:38:20,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:38:20" (3/3) ... [2021-11-25 19:38:20,162 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2021-11-25 19:38:20,169 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:38:20,169 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:38:20,246 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:38:20,261 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:38:20,262 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:38:20,292 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) [2021-11-25 19:38:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 19:38:20,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:20,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 19:38:20,306 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:20,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:20,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2249702, now seen corresponding path program 1 times [2021-11-25 19:38:20,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:20,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615355250] [2021-11-25 19:38:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:20,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:38:20,477 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:38:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:38:20,542 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:38:20,544 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:38:20,546 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:38:20,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:38:20,584 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 19:38:20,593 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:38:20,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:38:20 BoogieIcfgContainer [2021-11-25 19:38:20,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:38:20,634 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:38:20,634 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:38:20,635 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:38:20,635 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:38:20" (3/4) ... [2021-11-25 19:38:20,637 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 19:38:20,693 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:38:20,693 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:38:20,698 INFO L158 Benchmark]: Toolchain (without parser) took 1171.34ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.0MB in the beginning and 83.8MB in the end (delta: -31.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:38:20,699 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory was 68.3MB in the beginning and 68.3MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:38:20,704 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.97ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 51.8MB in the beginning and 85.0MB in the end (delta: -33.3MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-11-25 19:38:20,705 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.23ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 83.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:38:20,705 INFO L158 Benchmark]: Boogie Preprocessor took 20.70ms. Allocated memory is still 109.1MB. Free memory was 83.5MB in the beginning and 82.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:38:20,706 INFO L158 Benchmark]: RCFGBuilder took 299.72ms. Allocated memory is still 109.1MB. Free memory was 82.5MB in the beginning and 72.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:38:20,706 INFO L158 Benchmark]: TraceAbstraction took 475.71ms. Allocated memory is still 109.1MB. Free memory was 71.6MB in the beginning and 85.8MB in the end (delta: -14.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2021-11-25 19:38:20,707 INFO L158 Benchmark]: Witness Printer took 59.74ms. Allocated memory is still 109.1MB. Free memory was 85.3MB in the beginning and 83.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:38:20,712 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory was 68.3MB in the beginning and 68.3MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.97ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 51.8MB in the beginning and 85.0MB in the end (delta: -33.3MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.23ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 83.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.70ms. Allocated memory is still 109.1MB. Free memory was 83.5MB in the beginning and 82.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 299.72ms. Allocated memory is still 109.1MB. Free memory was 82.5MB in the beginning and 72.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 475.71ms. Allocated memory is still 109.1MB. Free memory was 71.6MB in the beginning and 85.8MB in the end (delta: -14.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * Witness Printer took 59.74ms. Allocated memory is still 109.1MB. Free memory was 85.3MB in the beginning and 83.8MB in the end (delta: 1.5MB). 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 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L18] unsigned int d1=1, d2=1, d3=1; [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L21] COND FALSE !(x1>0 && x2>0 && x3>0) [L30] CALL __VERIFIER_assert(x1==0 && x2==0 && x3==0) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] 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, PartialOrderReductionTime: 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 proved your program to be incorrect! [2021-11-25 19:38:20,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0f0ae2-f08e-4583-a1b9-de471ec34f3f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE