./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/array-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/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_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/array-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/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 32bit --witnessprinter.graph.data.programhash 229f3e8ce4e3b13e76b58dc42b5f9a4638bd79f9f3aa927499d1d902ea457152 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:16:39,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:16:39,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:16:39,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:16:39,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:16:39,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:16:39,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:16:39,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:16:39,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:16:39,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:16:39,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:16:39,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:16:39,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:16:39,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:16:39,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:16:39,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:16:39,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:16:39,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:16:39,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:16:39,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:16:39,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:16:39,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:16:39,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:16:39,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:16:39,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:16:39,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:16:39,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:16:39,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:16:39,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:16:39,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:16:39,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:16:39,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:16:39,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:16:39,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:16:39,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:16:39,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:16:39,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:16:39,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:16:39,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:16:39,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:16:39,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:16:39,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:16:39,750 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:16:39,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:16:39,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:16:39,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:16:39,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:16:39,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:16:39,752 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:16:39,752 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:16:39,752 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:16:39,752 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:16:39,752 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:16:39,753 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:16:39,753 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:16:39,753 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:16:39,753 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:16:39,753 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:16:39,753 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:16:39,754 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:16:39,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:16:39,754 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:16:39,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:16:39,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:16:39,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:16:39,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:16:39,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:16:39,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:16:39,755 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:16:39,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:16:39,756 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:16:39,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:16:39,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:16:39,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:16:39,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:16:39,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:16:39,757 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:16:39,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:16:39,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:16:39,757 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:16:39,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:16:39,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:16:39,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:16:39,758 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_761a8ba2-89dd-4916-a87b-f9682b9b12c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 229f3e8ce4e3b13e76b58dc42b5f9a4638bd79f9f3aa927499d1d902ea457152 [2022-12-14 08:16:39,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:16:39,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:16:39,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:16:39,944 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:16:39,944 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:16:39,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loops/array-1.c [2022-12-14 08:16:42,544 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:16:42,682 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:16:42,682 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/sv-benchmarks/c/loops/array-1.c [2022-12-14 08:16:42,686 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/data/2bde9b971/091920b21f034393b174cd132327b97e/FLAG81a7115e8 [2022-12-14 08:16:43,106 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/data/2bde9b971/091920b21f034393b174cd132327b97e [2022-12-14 08:16:43,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:16:43,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:16:43,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:16:43,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:16:43,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:16:43,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38deb2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43, skipping insertion in model container [2022-12-14 08:16:43,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:16:43,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:16:43,227 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_761a8ba2-89dd-4916-a87b-f9682b9b12c6/sv-benchmarks/c/loops/array-1.c[319,332] [2022-12-14 08:16:43,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:16:43,247 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:16:43,259 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_761a8ba2-89dd-4916-a87b-f9682b9b12c6/sv-benchmarks/c/loops/array-1.c[319,332] [2022-12-14 08:16:43,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:16:43,277 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:16:43,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43 WrapperNode [2022-12-14 08:16:43,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:16:43,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:16:43,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:16:43,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:16:43,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,312 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2022-12-14 08:16:43,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:16:43,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:16:43,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:16:43,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:16:43,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,332 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:16:43,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:16:43,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:16:43,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:16:43,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43" (1/1) ... [2022-12-14 08:16:43,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:16:43,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:16:43,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:16:43,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:16:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:16:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:16:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:16:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 08:16:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:16:43,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:16:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 08:16:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:16:43,446 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:16:43,447 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:16:43,528 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:16:43,558 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:16:43,559 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:16:43,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:16:43 BoogieIcfgContainer [2022-12-14 08:16:43,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:16:43,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:16:43,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:16:43,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:16:43,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:16:43" (1/3) ... [2022-12-14 08:16:43,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bd0544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:16:43, skipping insertion in model container [2022-12-14 08:16:43,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:16:43" (2/3) ... [2022-12-14 08:16:43,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bd0544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:16:43, skipping insertion in model container [2022-12-14 08:16:43,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:16:43" (3/3) ... [2022-12-14 08:16:43,567 INFO L112 eAbstractionObserver]: Analyzing ICFG array-1.c [2022-12-14 08:16:43,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:16:43,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:16:43,628 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:16:43,633 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;@d1a9327, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:16:43,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:16:43,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:16:43,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 08:16:43,641 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:16:43,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 08:16:43,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:16:43,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:16:43,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2064998, now seen corresponding path program 1 times [2022-12-14 08:16:43,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:16:43,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538819504] [2022-12-14 08:16:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:16:43,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:16:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:16:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:16:43,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:16:43,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538819504] [2022-12-14 08:16:43,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538819504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:16:43,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:16:43,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:16:43,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946580473] [2022-12-14 08:16:43,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:16:43,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:16:43,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:16:43,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:16:43,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:16:43,959 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:16:43,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:16:43,984 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-12-14 08:16:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:16:43,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 08:16:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:16:43,992 INFO L225 Difference]: With dead ends: 13 [2022-12-14 08:16:43,992 INFO L226 Difference]: Without dead ends: 6 [2022-12-14 08:16:43,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:16:43,996 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:16:43,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:16:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-12-14 08:16:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-12-14 08:16:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:16:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-12-14 08:16:44,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-12-14 08:16:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:16:44,019 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-12-14 08:16:44,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:16:44,019 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-12-14 08:16:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 08:16:44,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:16:44,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 08:16:44,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:16:44,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:16:44,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:16:44,021 INFO L85 PathProgramCache]: Analyzing trace with hash 64119651, now seen corresponding path program 1 times [2022-12-14 08:16:44,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:16:44,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750020856] [2022-12-14 08:16:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:16:44,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:16:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:16:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:16:44,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:16:44,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750020856] [2022-12-14 08:16:44,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750020856] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:16:44,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409279846] [2022-12-14 08:16:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:16:44,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:16:44,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:16:44,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:16:44,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:16:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:16:44,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 08:16:44,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:16:44,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 08:16:44,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-12-14 08:16:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:16:44,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:16:44,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-12-14 08:16:44,636 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:16:44,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 88 [2022-12-14 08:16:44,794 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-14 08:16:44,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2022-12-14 08:16:44,813 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-14 08:16:44,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 14 [2022-12-14 08:16:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:16:44,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409279846] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:16:44,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [166483760] [2022-12-14 08:16:44,853 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 08:16:44,853 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:16:44,856 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:16:44,860 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:16:44,860 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:16:44,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:16:44,909 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-12-14 08:16:44,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 42 [2022-12-14 08:16:44,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:16:44,947 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 08:16:44,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 08:16:44,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:16:44,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-14 08:16:45,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-12-14 08:16:45,068 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:16:45,295 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '71#(and (<= 0 |ULTIMATE.start_main_~#array~0#1.offset|) (= (ite (<= |ULTIMATE.start_main_~menor~0#1| |ULTIMATE.start_main_#t~mem9#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|) |ULTIMATE.start_main_~#array~0#1.offset|) |ULTIMATE.start_main_#t~mem9#1|) (= |ULTIMATE.start_main_~j~0#1| 1) (<= 0 |#NULL.offset|) (= |ULTIMATE.start_main_~SIZE~0#1| 1) (<= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:16:45,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:16:45,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:16:45,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-12-14 08:16:45,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267343182] [2022-12-14 08:16:45,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:16:45,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 08:16:45,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:16:45,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 08:16:45,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:16:45,299 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 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 08:16:45,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:16:45,368 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2022-12-14 08:16:45,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:16:45,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 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) Word has length 5 [2022-12-14 08:16:45,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:16:45,369 INFO L225 Difference]: With dead ends: 7 [2022-12-14 08:16:45,369 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 08:16:45,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:16:45,370 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:16:45,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:16:45,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 08:16:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 08:16:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:16:45,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 08:16:45,372 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2022-12-14 08:16:45,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:16:45,372 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 08:16:45,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 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 08:16:45,373 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 08:16:45,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 08:16:45,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 08:16:45,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:16:45,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:16:45,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 08:16:45,607 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 08:16:45,608 INFO L895 garLoopResultBuilder]: At program point L21-3(lines 21 26) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#array~0#1.offset| 0))) (or (and (<= |ULTIMATE.start_main_~menor~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|) |ULTIMATE.start_main_~#array~0#1.offset|)) .cse0) (and .cse0 (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~SIZE~0#1| 1)))) [2022-12-14 08:16:45,608 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 08:16:45,608 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-12-14 08:16:45,608 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-12-14 08:16:45,608 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-12-14 08:16:45,609 INFO L902 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2022-12-14 08:16:45,611 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 08:16:45,613 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:16:45,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:16:45 BoogieIcfgContainer [2022-12-14 08:16:45,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:16:45,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:16:45,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:16:45,624 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:16:45,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:16:43" (3/4) ... [2022-12-14 08:16:45,627 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 08:16:45,633 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-14 08:16:45,634 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 08:16:45,634 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 08:16:45,634 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 08:16:45,656 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 08:16:45,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:16:45,657 INFO L158 Benchmark]: Toolchain (without parser) took 2547.00ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 104.6MB in the beginning and 140.8MB in the end (delta: -36.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:16:45,657 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 167.8MB. Free memory was 144.8MB in the beginning and 144.8MB in the end (delta: 83.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:16:45,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.33ms. Allocated memory is still 167.8MB. Free memory was 104.3MB in the beginning and 94.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 08:16:45,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.12ms. Allocated memory is still 167.8MB. Free memory was 94.2MB in the beginning and 142.3MB in the end (delta: -48.1MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2022-12-14 08:16:45,658 INFO L158 Benchmark]: Boogie Preprocessor took 21.43ms. Allocated memory is still 167.8MB. Free memory was 142.3MB in the beginning and 141.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:16:45,658 INFO L158 Benchmark]: RCFGBuilder took 225.61ms. Allocated memory is still 167.8MB. Free memory was 141.1MB in the beginning and 128.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 08:16:45,658 INFO L158 Benchmark]: TraceAbstraction took 2060.90ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 127.8MB in the beginning and 142.9MB in the end (delta: -15.0MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2022-12-14 08:16:45,658 INFO L158 Benchmark]: Witness Printer took 32.37ms. Allocated memory is still 201.3MB. Free memory was 142.9MB in the beginning and 140.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:16:45,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 167.8MB. Free memory was 144.8MB in the beginning and 144.8MB in the end (delta: 83.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.33ms. Allocated memory is still 167.8MB. Free memory was 104.3MB in the beginning and 94.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.12ms. Allocated memory is still 167.8MB. Free memory was 94.2MB in the beginning and 142.3MB in the end (delta: -48.1MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.43ms. Allocated memory is still 167.8MB. Free memory was 142.3MB in the beginning and 141.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 225.61ms. Allocated memory is still 167.8MB. Free memory was 141.1MB in the beginning and 128.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2060.90ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 127.8MB in the beginning and 142.9MB in the end (delta: -15.0MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Witness Printer took 32.37ms. Allocated memory is still 201.3MB. Free memory was 142.9MB in the beginning and 140.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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: 7]: 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, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 3 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 23 HoareAnnotationTreeSize, 2 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 103 SizeOfPredicates, 12 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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: 21]: Loop Invariant Derived loop invariant: (menor <= unknown-#memory_int-unknown[array][array] && array == 0) || ((array == 0 && j == 0) && SIZE == 1) - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-14 08:16:45,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761a8ba2-89dd-4916-a87b-f9682b9b12c6/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