./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i --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_9e9d8bd5-ee28-489b-8f57-078455dac626/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/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_9e9d8bd5-ee28-489b-8f57-078455dac626/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/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_9e9d8bd5-ee28-489b-8f57-078455dac626/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 608a161795639c070a2e0dd9cb77ec327f896e40581ac2ba975f6275c137af77 --- 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 12:24:11,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:24:11,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:24:12,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:24:12,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:24:12,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:24:12,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:24:12,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:24:12,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:24:12,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:24:12,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:24:12,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:24:12,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:24:12,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:24:12,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:24:12,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:24:12,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:24:12,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:24:12,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:24:12,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:24:12,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:24:12,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:24:12,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:24:12,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:24:12,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:24:12,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:24:12,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:24:12,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:24:12,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:24:12,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:24:12,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:24:12,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:24:12,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:24:12,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:24:12,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:24:12,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:24:12,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:24:12,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:24:12,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:24:12,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:24:12,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:24:12,043 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:24:12,065 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:24:12,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:24:12,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:24:12,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:24:12,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:24:12,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:24:12,067 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:24:12,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:24:12,067 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:24:12,067 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:24:12,068 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:24:12,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:24:12,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:24:12,068 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:24:12,068 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:24:12,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:24:12,069 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:24:12,069 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:24:12,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:24:12,070 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:24:12,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:24:12,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:24:12,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:24:12,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:24:12,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:24:12,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:24:12,071 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:24:12,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:24:12,072 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:24:12,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:24:12,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:24:12,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:24:12,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:24:12,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:24:12,073 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:24:12,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:24:12,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:24:12,073 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:24:12,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:24:12,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:24:12,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:24:12,074 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_9e9d8bd5-ee28-489b-8f57-078455dac626/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608a161795639c070a2e0dd9cb77ec327f896e40581ac2ba975f6275c137af77 [2022-12-14 12:24:12,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:24:12,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:24:12,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:24:12,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:24:12,284 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:24:12,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2022-12-14 12:24:14,843 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:24:14,963 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:24:14,963 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2022-12-14 12:24:14,968 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/bin/utaipan-gh47qXpMRh/data/8c1d4fbcd/033c046b835342dda964b839483c31a8/FLAG099310233 [2022-12-14 12:24:14,979 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/bin/utaipan-gh47qXpMRh/data/8c1d4fbcd/033c046b835342dda964b839483c31a8 [2022-12-14 12:24:14,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:24:14,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:24:14,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:24:14,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:24:14,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:24:14,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:24:14" (1/1) ... [2022-12-14 12:24:14,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69df73ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:14, skipping insertion in model container [2022-12-14 12:24:14,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:24:14" (1/1) ... [2022-12-14 12:24:14,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:24:15,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:24:15,111 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_9e9d8bd5-ee28-489b-8f57-078455dac626/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i[295,308] [2022-12-14 12:24:15,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:24:15,132 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:24:15,141 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_9e9d8bd5-ee28-489b-8f57-078455dac626/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i[295,308] [2022-12-14 12:24:15,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:24:15,155 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:24:15,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15 WrapperNode [2022-12-14 12:24:15,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:24:15,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:24:15,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:24:15,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:24:15,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15" (1/1) ... [2022-12-14 12:24:15,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15" (1/1) ... [2022-12-14 12:24:15,180 INFO L138 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-12-14 12:24:15,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:24:15,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:24:15,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:24:15,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:24:15,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15" (1/1) ... [2022-12-14 12:24:15,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15" (1/1) ... [2022-12-14 12:24:15,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15" (1/1) ... [2022-12-14 12:24:15,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15" (1/1) ... [2022-12-14 12:24:15,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15" (1/1) ... [2022-12-14 12:24:15,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15" (1/1) ... [2022-12-14 12:24:15,196 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15" (1/1) ... [2022-12-14 12:24:15,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15" (1/1) ... [2022-12-14 12:24:15,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:24:15,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:24:15,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:24:15,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:24:15,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15" (1/1) ... [2022-12-14 12:24:15,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:24:15,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:24:15,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:24:15,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:24:15,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:24:15,268 INFO L130 BoogieDeclarations]: Found specification of procedure err [2022-12-14 12:24:15,268 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2022-12-14 12:24:15,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:24:15,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:24:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:24:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-12-14 12:24:15,269 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-12-14 12:24:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:24:15,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:24:15,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 12:24:15,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:24:15,329 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:24:15,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:24:15,394 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:24:15,407 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:24:15,407 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 12:24:15,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:24:15 BoogieIcfgContainer [2022-12-14 12:24:15,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:24:15,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:24:15,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:24:15,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:24:15,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:24:14" (1/3) ... [2022-12-14 12:24:15,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dbcc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:24:15, skipping insertion in model container [2022-12-14 12:24:15,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:24:15" (2/3) ... [2022-12-14 12:24:15,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dbcc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:24:15, skipping insertion in model container [2022-12-14 12:24:15,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:24:15" (3/3) ... [2022-12-14 12:24:15,417 INFO L112 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2022-12-14 12:24:15,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:24:15,432 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:24:15,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:24:15,474 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;@57240a37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:24:15,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:24:15,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 8 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 12:24:15,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 12:24:15,483 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:24:15,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 12:24:15,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:24:15,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:24:15,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1797267687, now seen corresponding path program 1 times [2022-12-14 12:24:15,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:24:15,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588734123] [2022-12-14 12:24:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:24:15,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:24:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:24:15,736 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 12:24:15,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:24:15,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588734123] [2022-12-14 12:24:15,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588734123] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:24:15,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:24:15,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:24:15,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115840195] [2022-12-14 12:24:15,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:24:15,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:24:15,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:24:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:24:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:24:15,767 INFO L87 Difference]: Start difference. First operand has 13 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 8 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:24:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:24:15,827 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-12-14 12:24:15,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:24:15,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 12:24:15,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:24:15,834 INFO L225 Difference]: With dead ends: 26 [2022-12-14 12:24:15,835 INFO L226 Difference]: Without dead ends: 12 [2022-12-14 12:24:15,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:24:15,839 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:24:15,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:24:15,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-12-14 12:24:15,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-12-14 12:24:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:24:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2022-12-14 12:24:15,868 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 6 [2022-12-14 12:24:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:24:15,868 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2022-12-14 12:24:15,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:24:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2022-12-14 12:24:15,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:24:15,869 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:24:15,869 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:24:15,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:24:15,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:24:15,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:24:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1190020852, now seen corresponding path program 1 times [2022-12-14 12:24:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:24:15,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875333369] [2022-12-14 12:24:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:24:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:24:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:24:15,886 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:24:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:24:15,914 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:24:15,915 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:24:15,916 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 12:24:15,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:24:15,922 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 12:24:15,925 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 12:24:15,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 12:24:15 BoogieIcfgContainer [2022-12-14 12:24:15,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 12:24:15,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 12:24:15,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 12:24:15,945 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 12:24:15,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:24:15" (3/4) ... [2022-12-14 12:24:15,947 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 12:24:15,975 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 12:24:15,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 12:24:15,976 INFO L158 Benchmark]: Toolchain (without parser) took 993.47ms. Allocated memory was 125.8MB in the beginning and 184.5MB in the end (delta: 58.7MB). Free memory was 75.1MB in the beginning and 111.9MB in the end (delta: -36.8MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2022-12-14 12:24:15,976 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory was 91.4MB in the beginning and 91.4MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:24:15,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.04ms. Allocated memory is still 125.8MB. Free memory was 74.9MB in the beginning and 64.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 12:24:15,977 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.87ms. Allocated memory is still 125.8MB. Free memory was 64.9MB in the beginning and 63.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:24:15,978 INFO L158 Benchmark]: Boogie Preprocessor took 17.96ms. Allocated memory is still 125.8MB. Free memory was 63.4MB in the beginning and 62.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:24:15,978 INFO L158 Benchmark]: RCFGBuilder took 210.42ms. Allocated memory was 125.8MB in the beginning and 184.5MB in the end (delta: 58.7MB). Free memory was 62.2MB in the beginning and 150.7MB in the end (delta: -88.5MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2022-12-14 12:24:15,978 INFO L158 Benchmark]: TraceAbstraction took 532.23ms. Allocated memory is still 184.5MB. Free memory was 149.7MB in the beginning and 114.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-12-14 12:24:15,979 INFO L158 Benchmark]: Witness Printer took 30.92ms. Allocated memory is still 184.5MB. Free memory was 114.0MB in the beginning and 111.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:24:15,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory was 91.4MB in the beginning and 91.4MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.04ms. Allocated memory is still 125.8MB. Free memory was 74.9MB in the beginning and 64.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.87ms. Allocated memory is still 125.8MB. Free memory was 64.9MB in the beginning and 63.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.96ms. Allocated memory is still 125.8MB. Free memory was 63.4MB in the beginning and 62.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 210.42ms. Allocated memory was 125.8MB in the beginning and 184.5MB in the end (delta: 58.7MB). Free memory was 62.2MB in the beginning and 150.7MB in the end (delta: -88.5MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * TraceAbstraction took 532.23ms. Allocated memory is still 184.5MB. Free memory was 149.7MB in the beginning and 114.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 30.92ms. Allocated memory is still 184.5MB. Free memory was 114.0MB in the beginning and 111.9MB 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L35] struct mutex m; [L36] m.is_locked = 0 VAL [m={5:0}] [L38] CALL mutex_lock(&m) VAL [a={5:0}] [L23] EXPR a->is_locked VAL [a={5:0}, a={5:0}, a->is_locked=0] [L23] COND FALSE !(a->is_locked == 1) [L24] a->is_locked = 1 [L38] RET mutex_lock(&m) VAL [m={5:0}] [L42] CALL mutex_lock(&m) VAL [a={5:0}] [L23] EXPR a->is_locked VAL [a={5:0}, a={5:0}, a->is_locked=1] [L23] COND TRUE a->is_locked == 1 [L23] CALL err() [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 7 mSDtfsCounter, 24 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 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! [2022-12-14 12:24:15,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e9d8bd5-ee28-489b-8f57-078455dac626/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