./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/fo_test.i --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_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 --- 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 [2022-12-13 22:18:56,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:18:56,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:18:56,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:18:56,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:18:56,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:18:56,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:18:56,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:18:56,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:18:56,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:18:56,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:18:56,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:18:56,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:18:56,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:18:56,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:18:56,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:18:56,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:18:56,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:18:56,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:18:56,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:18:56,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:18:56,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:18:56,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:18:56,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:18:56,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:18:56,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:18:56,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:18:56,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:18:56,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:18:56,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:18:56,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:18:56,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:18:56,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:18:56,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:18:56,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:18:56,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:18:56,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:18:56,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:18:56,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:18:56,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:18:56,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:18:56,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:18:56,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:18:56,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:18:56,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:18:56,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:18:56,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:18:56,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:18:56,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:18:56,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:18:56,743 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:18:56,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:18:56,743 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:18:56,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:18:56,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:18:56,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:18:56,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:18:56,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:18:56,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:18:56,744 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:18:56,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:18:56,745 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:18:56,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:18:56,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:18:56,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:18:56,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:18:56,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:18:56,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:18:56,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:18:56,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:18:56,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:18:56,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:18:56,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:18:56,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:18:56,747 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:18:56,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:18:56,747 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:18:56,747 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2022-12-13 22:18:56,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:18:56,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:18:56,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:18:56,946 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:18:56,946 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:18:56,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-regression/fo_test.i [2022-12-13 22:18:59,560 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:18:59,716 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:18:59,717 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/sv-benchmarks/c/ldv-regression/fo_test.i [2022-12-13 22:18:59,725 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/data/bf1569b78/8818d59bb2054d09bfdf00ed8b8f3ff6/FLAGcb3389b92 [2022-12-13 22:18:59,736 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/data/bf1569b78/8818d59bb2054d09bfdf00ed8b8f3ff6 [2022-12-13 22:18:59,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:18:59,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:18:59,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:18:59,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:18:59,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:18:59,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:18:59" (1/1) ... [2022-12-13 22:18:59,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe31277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:18:59, skipping insertion in model container [2022-12-13 22:18:59,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:18:59" (1/1) ... [2022-12-13 22:18:59,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:18:59,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:19:00,129 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_ad8c1e4d-41c4-44bf-b389-abaa216d767d/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2022-12-13 22:19:00,145 WARN L623 FunctionHandler]: Unknown extern function read [2022-12-13 22:19:00,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:19:00,156 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:19:00,189 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_ad8c1e4d-41c4-44bf-b389-abaa216d767d/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2022-12-13 22:19:00,192 WARN L623 FunctionHandler]: Unknown extern function read [2022-12-13 22:19:00,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:19:00,239 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:19:00,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00 WrapperNode [2022-12-13 22:19:00,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:19:00,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:19:00,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:19:00,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:19:00,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00" (1/1) ... [2022-12-13 22:19:00,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00" (1/1) ... [2022-12-13 22:19:00,284 INFO L138 Inliner]: procedures = 229, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 64 [2022-12-13 22:19:00,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:19:00,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:19:00,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:19:00,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:19:00,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00" (1/1) ... [2022-12-13 22:19:00,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00" (1/1) ... [2022-12-13 22:19:00,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00" (1/1) ... [2022-12-13 22:19:00,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00" (1/1) ... [2022-12-13 22:19:00,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00" (1/1) ... [2022-12-13 22:19:00,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00" (1/1) ... [2022-12-13 22:19:00,317 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00" (1/1) ... [2022-12-13 22:19:00,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00" (1/1) ... [2022-12-13 22:19:00,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:19:00,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:19:00,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:19:00,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:19:00,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00" (1/1) ... [2022-12-13 22:19:00,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:19:00,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:19:00,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:19:00,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:19:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 22:19:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:19:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure read [2022-12-13 22:19:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:19:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:19:00,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:19:00,601 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:19:00,603 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:19:00,683 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:19:00,688 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:19:00,689 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 22:19:00,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:19:00 BoogieIcfgContainer [2022-12-13 22:19:00,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:19:00,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:19:00,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:19:00,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:19:00,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:18:59" (1/3) ... [2022-12-13 22:19:00,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5deadb04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:19:00, skipping insertion in model container [2022-12-13 22:19:00,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:19:00" (2/3) ... [2022-12-13 22:19:00,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5deadb04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:19:00, skipping insertion in model container [2022-12-13 22:19:00,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:19:00" (3/3) ... [2022-12-13 22:19:00,700 INFO L112 eAbstractionObserver]: Analyzing ICFG fo_test.i [2022-12-13 22:19:00,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:19:00,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:19:00,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:19:00,760 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=PETRI_NET, 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;@7900d2bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:19:00,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 22:19:00,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:19:00,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 22:19:00,768 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:19:00,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:19:00,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:19:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:19:00,774 INFO L85 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2022-12-13 22:19:00,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:19:00,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292248490] [2022-12-13 22:19:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:19:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:19:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:19:01,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:19:01,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292248490] [2022-12-13 22:19:01,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292248490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:19:01,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:19:01,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:19:01,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23441992] [2022-12-13 22:19:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:19:01,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:19:01,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:19:01,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:19:01,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:19:01,088 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2022-12-13 22:19:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:19:01,107 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-12-13 22:19:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:19:01,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Word has length 8 [2022-12-13 22:19:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:19:01,114 INFO L225 Difference]: With dead ends: 25 [2022-12-13 22:19:01,114 INFO L226 Difference]: Without dead ends: 9 [2022-12-13 22:19:01,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:19:01,118 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:19:01,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:19:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-13 22:19:01,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-12-13 22:19:01,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 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) [2022-12-13 22:19:01,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-12-13 22:19:01,139 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-12-13 22:19:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:19:01,139 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-12-13 22:19:01,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2022-12-13 22:19:01,139 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-12-13 22:19:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 22:19:01,140 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:19:01,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:19:01,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:19:01,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:19:01,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:19:01,141 INFO L85 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2022-12-13 22:19:01,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:19:01,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805515003] [2022-12-13 22:19:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:19:01,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:19:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:19:01,167 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 22:19:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:19:01,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 22:19:01,202 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 22:19:01,203 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 22:19:01,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:19:01,207 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 22:19:01,209 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:19:01,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:19:01 BoogieIcfgContainer [2022-12-13 22:19:01,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:19:01,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:19:01,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:19:01,226 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:19:01,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:19:00" (3/4) ... [2022-12-13 22:19:01,228 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 22:19:01,253 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 22:19:01,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:19:01,253 INFO L158 Benchmark]: Toolchain (without parser) took 1514.66ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 86.0MB in the beginning and 120.7MB in the end (delta: -34.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:19:01,254 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:19:01,254 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.26ms. Allocated memory is still 127.9MB. Free memory was 85.6MB in the beginning and 60.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-13 22:19:01,254 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.88ms. Allocated memory is still 127.9MB. Free memory was 60.4MB in the beginning and 57.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:19:01,255 INFO L158 Benchmark]: Boogie Preprocessor took 35.79ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 57.9MB in the beginning and 128.4MB in the end (delta: -70.5MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2022-12-13 22:19:01,255 INFO L158 Benchmark]: RCFGBuilder took 369.45ms. Allocated memory is still 157.3MB. Free memory was 128.4MB in the beginning and 113.4MB in the end (delta: 15.0MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2022-12-13 22:19:01,255 INFO L158 Benchmark]: TraceAbstraction took 531.87ms. Allocated memory is still 157.3MB. Free memory was 112.6MB in the beginning and 122.9MB in the end (delta: -10.3MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2022-12-13 22:19:01,255 INFO L158 Benchmark]: Witness Printer took 27.23ms. Allocated memory is still 157.3MB. Free memory was 122.9MB in the beginning and 120.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:19:01,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.26ms. Allocated memory is still 127.9MB. Free memory was 85.6MB in the beginning and 60.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.88ms. Allocated memory is still 127.9MB. Free memory was 60.4MB in the beginning and 57.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.79ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 57.9MB in the beginning and 128.4MB in the end (delta: -70.5MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * RCFGBuilder took 369.45ms. Allocated memory is still 157.3MB. Free memory was 128.4MB in the beginning and 113.4MB in the end (delta: 15.0MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * TraceAbstraction took 531.87ms. Allocated memory is still 157.3MB. Free memory was 112.6MB in the beginning and 122.9MB in the end (delta: -10.3MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. * Witness Printer took 27.23ms. Allocated memory is still 157.3MB. Free memory was 122.9MB in the beginning and 120.7MB in the end (delta: 2.2MB). 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: 980]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L987] int globalState = 0; VAL [globalState=0] [L992] CALL, EXPR l_open("unknown",00) [L1002] CALL, EXPR open(file,flags) [L985] return __VERIFIER_nondet_int(); [L1002] RET, EXPR open(file,flags) [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) VAL [\old(flags)=0, fd=0, file={4:0}, file={4:0}, flags=0, globalState=0] [L1004] return fd; VAL [\old(flags)=0, \result=0, fd=0, file={4:0}, file={4:0}, flags=0, globalState=0] [L992] RET, EXPR l_open("unknown",00) [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L994] CALL l_read(file,cbuf,99) [L998] (globalState == 1) ? (0) : __blast_assert () [L998] CALL __blast_assert () [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 13 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2022-12-13 22:19:01,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad8c1e4d-41c4-44bf-b389-abaa216d767d/bin/uautomizer-uyxdKDjOR8/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