./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/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_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/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_868774d9-21b5-409d-9c64-a3b1055c4732/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 a7ec0ddf4067238fb2036f4b1ba04b3da310b5a0f4281916240f2abfe32c0d19 --- 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 15:31:44,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:31:44,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:31:44,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:31:44,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:31:44,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:31:44,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:31:44,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:31:44,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:31:44,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:31:44,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:31:44,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:31:44,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:31:44,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:31:44,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:31:44,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:31:44,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:31:44,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:31:44,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:31:44,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:31:44,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:31:44,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:31:44,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:31:44,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:31:44,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:31:44,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:31:44,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:31:44,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:31:44,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:31:44,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:31:44,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:31:44,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:31:44,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:31:44,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:31:44,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:31:44,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:31:44,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:31:44,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:31:44,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:31:44,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:31:44,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:31:44,584 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:31:44,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:31:44,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:31:44,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:31:44,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:31:44,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:31:44,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:31:44,607 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:31:44,607 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:31:44,607 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:31:44,607 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:31:44,607 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:31:44,607 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:31:44,608 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:31:44,608 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:31:44,608 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:31:44,608 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:31:44,608 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:31:44,608 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:31:44,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:31:44,609 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:31:44,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:31:44,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:31:44,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:31:44,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:31:44,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:31:44,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:31:44,610 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:31:44,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:31:44,611 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:31:44,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:31:44,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:31:44,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:31:44,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:31:44,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:31:44,612 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:31:44,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:31:44,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:31:44,612 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:31:44,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:31:44,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:31:44,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:31:44,613 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_868774d9-21b5-409d-9c64-a3b1055c4732/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7ec0ddf4067238fb2036f4b1ba04b3da310b5a0f4281916240f2abfe32c0d19 [2022-12-14 15:31:44,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:31:44,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:31:44,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:31:44,828 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:31:44,828 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:31:44,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-regression/test12.c [2022-12-14 15:31:47,394 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:31:47,533 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:31:47,533 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/sv-benchmarks/c/ldv-regression/test12.c [2022-12-14 15:31:47,538 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh/data/c5c6c19cf/b2b725d8e9c641baa6c7638270ee9f28/FLAGabb3d2005 [2022-12-14 15:31:47,549 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh/data/c5c6c19cf/b2b725d8e9c641baa6c7638270ee9f28 [2022-12-14 15:31:47,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:31:47,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:31:47,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:31:47,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:31:47,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:31:47,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6abc9f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47, skipping insertion in model container [2022-12-14 15:31:47,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:31:47,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:31:47,676 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_868774d9-21b5-409d-9c64-a3b1055c4732/sv-benchmarks/c/ldv-regression/test12.c[377,390] [2022-12-14 15:31:47,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:31:47,697 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:31:47,709 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_868774d9-21b5-409d-9c64-a3b1055c4732/sv-benchmarks/c/ldv-regression/test12.c[377,390] [2022-12-14 15:31:47,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:31:47,723 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:31:47,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47 WrapperNode [2022-12-14 15:31:47,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:31:47,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:31:47,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:31:47,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:31:47,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,753 INFO L138 Inliner]: procedures = 12, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2022-12-14 15:31:47,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:31:47,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:31:47,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:31:47,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:31:47,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,770 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:31:47,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:31:47,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:31:47,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:31:47,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47" (1/1) ... [2022-12-14 15:31:47,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:31:47,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:31:47,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:31:47,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:31:47,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:31:47,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:31:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:31:47,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:31:47,892 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:31:47,893 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:31:47,952 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:31:47,966 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:31:47,967 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 15:31:47,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:31:47 BoogieIcfgContainer [2022-12-14 15:31:47,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:31:47,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:31:47,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:31:47,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:31:47,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:31:47" (1/3) ... [2022-12-14 15:31:47,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1cd717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:31:47, skipping insertion in model container [2022-12-14 15:31:47,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:31:47" (2/3) ... [2022-12-14 15:31:47,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1cd717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:31:47, skipping insertion in model container [2022-12-14 15:31:47,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:31:47" (3/3) ... [2022-12-14 15:31:47,975 INFO L112 eAbstractionObserver]: Analyzing ICFG test12.c [2022-12-14 15:31:47,989 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:31:47,990 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:31:48,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:31:48,030 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;@68dc1d9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:31:48,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:31:48,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) 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 15:31:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 15:31:48,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:48,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 15:31:48,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:31:48,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:48,043 INFO L85 PathProgramCache]: Analyzing trace with hash 46292, now seen corresponding path program 1 times [2022-12-14 15:31:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:48,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177657549] [2022-12-14 15:31:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:31:48,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 15:31:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:31:48,136 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 15:31:48,138 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 15:31:48,139 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 15:31:48,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:31:48,143 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 15:31:48,146 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:31:48,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:31:48 BoogieIcfgContainer [2022-12-14 15:31:48,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:31:48,157 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:31:48,157 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:31:48,157 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:31:48,157 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:31:47" (3/4) ... [2022-12-14 15:31:48,159 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 15:31:48,179 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 15:31:48,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:31:48,180 INFO L158 Benchmark]: Toolchain (without parser) took 628.76ms. Allocated memory is still 140.5MB. Free memory was 108.5MB in the beginning and 85.0MB in the end (delta: 23.4MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2022-12-14 15:31:48,181 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 140.5MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:31:48,181 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.13ms. Allocated memory is still 140.5MB. Free memory was 108.5MB in the beginning and 112.7MB in the end (delta: -4.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 15:31:48,181 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.50ms. Allocated memory is still 140.5MB. Free memory was 112.7MB in the beginning and 111.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:31:48,182 INFO L158 Benchmark]: Boogie Preprocessor took 17.93ms. Allocated memory is still 140.5MB. Free memory was 111.5MB in the beginning and 110.6MB in the end (delta: 886.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:31:48,182 INFO L158 Benchmark]: RCFGBuilder took 195.80ms. Allocated memory is still 140.5MB. Free memory was 110.2MB in the beginning and 100.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 15:31:48,183 INFO L158 Benchmark]: TraceAbstraction took 186.11ms. Allocated memory is still 140.5MB. Free memory was 99.8MB in the beginning and 86.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 15:31:48,183 INFO L158 Benchmark]: Witness Printer took 22.93ms. Allocated memory is still 140.5MB. Free memory was 86.8MB in the beginning and 85.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:31:48,187 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 140.5MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.13ms. Allocated memory is still 140.5MB. Free memory was 108.5MB in the beginning and 112.7MB in the end (delta: -4.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.50ms. Allocated memory is still 140.5MB. Free memory was 112.7MB in the beginning and 111.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.93ms. Allocated memory is still 140.5MB. Free memory was 111.5MB in the beginning and 110.6MB in the end (delta: 886.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 195.80ms. Allocated memory is still 140.5MB. Free memory was 110.2MB in the beginning and 100.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 186.11ms. Allocated memory is still 140.5MB. Free memory was 99.8MB in the beginning and 86.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 22.93ms. Allocated memory is still 140.5MB. Free memory was 86.8MB in the beginning and 85.0MB in the end (delta: 1.8MB). 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 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int a, b; [L19] CALL equal(&a, &b) [L7] COND TRUE a != b VAL [a={4:0}, a={4:0}, a={4:0}, b={5:0}, b={5:0}, b={5:0}] [L12] reach_error() VAL [a={4:0}, a={4:0}, a={4:0}, b={5:0}, b={5:0}, b={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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! [2022-12-14 15:31:48,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868774d9-21b5-409d-9c64-a3b1055c4732/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE