./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 --- 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-8393723 [2022-11-19 07:52:34,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:52:34,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:52:34,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:52:34,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:52:34,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:52:34,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:52:34,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:52:34,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:52:34,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:52:34,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:52:34,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:52:34,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:52:34,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:52:34,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:52:34,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:52:34,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:52:34,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:52:34,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:52:34,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:52:34,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:52:34,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:52:34,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:52:34,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:52:34,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:52:34,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:52:34,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:52:34,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:52:34,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:52:34,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:52:34,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:52:34,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:52:34,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:52:34,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:52:34,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:52:34,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:52:34,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:52:34,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:52:34,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:52:34,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:52:34,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:52:34,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 07:52:34,863 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:52:34,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:52:34,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:52:34,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:52:34,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:52:34,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:52:34,867 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:52:34,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:52:34,867 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:52:34,868 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:52:34,868 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:52:34,869 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:52:34,869 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:52:34,869 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:52:34,870 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:52:34,870 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:52:34,870 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:52:34,871 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:52:34,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:52:34,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:52:34,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:52:34,873 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:52:34,873 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:52:34,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:52:34,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:52:34,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:52:34,875 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:52:34,875 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:52:34,876 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:52:34,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:52:34,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:52:34,877 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:52:34,877 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:52:34,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:52:34,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:52:34,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:52:34,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:52:34,879 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:52:34,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:52:34,880 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:52:34,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:52:34,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:52:34,881 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_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 [2022-11-19 07:52:35,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:52:35,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:52:35,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:52:35,299 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:52:35,300 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:52:35,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i [2022-11-19 07:52:35,407 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/data/6c6772404/ed95cda22ef04d5a97847f97aaf32fcc/FLAG95fd50116 [2022-11-19 07:52:36,196 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:52:36,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i [2022-11-19 07:52:36,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/data/6c6772404/ed95cda22ef04d5a97847f97aaf32fcc/FLAG95fd50116 [2022-11-19 07:52:36,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/data/6c6772404/ed95cda22ef04d5a97847f97aaf32fcc [2022-11-19 07:52:36,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:52:36,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:52:36,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:52:36,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:52:36,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:52:36,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:52:36" (1/1) ... [2022-11-19 07:52:36,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc53b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:36, skipping insertion in model container [2022-11-19 07:52:36,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:52:36" (1/1) ... [2022-11-19 07:52:36,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:52:36,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:52:37,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:52:37,070 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:52:37,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:52:37,207 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:52:37,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37 WrapperNode [2022-11-19 07:52:37,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:52:37,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:52:37,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:52:37,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:52:37,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,282 INFO L138 Inliner]: procedures = 162, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2022-11-19 07:52:37,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:52:37,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:52:37,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:52:37,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:52:37,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,309 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:52:37,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:52:37,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:52:37,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:52:37,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:52:37,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:52:37,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:52:37,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:52:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:52:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-19 07:52:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:52:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:52:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-19 07:52:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-19 07:52:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:52:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:52:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:52:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:52:37,459 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 07:52:37,731 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:52:37,734 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:52:37,942 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:52:37,952 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:52:37,952 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:52:37,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:52:37 BoogieIcfgContainer [2022-11-19 07:52:37,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:52:37,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:52:37,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:52:37,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:52:37,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:52:36" (1/3) ... [2022-11-19 07:52:37,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339f890c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:52:37, skipping insertion in model container [2022-11-19 07:52:37,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37" (2/3) ... [2022-11-19 07:52:37,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339f890c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:52:37, skipping insertion in model container [2022-11-19 07:52:37,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:52:37" (3/3) ... [2022-11-19 07:52:37,970 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_22-deref_read.i [2022-11-19 07:52:37,997 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:52:37,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-19 07:52:37,998 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:52:38,078 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:52:38,146 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:52:38,175 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 56 transitions, 117 flow [2022-11-19 07:52:38,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 56 transitions, 117 flow [2022-11-19 07:52:38,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 56 transitions, 117 flow [2022-11-19 07:52:38,283 INFO L130 PetriNetUnfolder]: 0/55 cut-off events. [2022-11-19 07:52:38,285 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-19 07:52:38,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 55 events. 0/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-11-19 07:52:38,293 INFO L119 LiptonReduction]: Number of co-enabled transitions 324 [2022-11-19 07:52:42,486 INFO L134 LiptonReduction]: Checked pairs total: 660 [2022-11-19 07:52:42,487 INFO L136 LiptonReduction]: Total number of compositions: 54 [2022-11-19 07:52:42,506 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 37 flow [2022-11-19 07:52:42,553 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 43 states have internal predecessors, (71), 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) [2022-11-19 07:52:42,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:52:42,602 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@36174650, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:52:42,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-19 07:52:42,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 43 states have internal predecessors, (71), 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) [2022-11-19 07:52:42,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 07:52:42,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:42,614 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 07:52:42,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-19 07:52:42,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash 207, now seen corresponding path program 1 times [2022-11-19 07:52:42,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:42,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974151189] [2022-11-19 07:52:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:42,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:52:42,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:42,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974151189] [2022-11-19 07:52:42,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974151189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:42,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:42,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 07:52:42,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263306807] [2022-11-19 07:52:42,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:42,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:52:42,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:52:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:52:42,877 INFO L87 Difference]: Start difference. First operand has 44 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 43 states have internal predecessors, (71), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 07:52:42,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:42,944 INFO L93 Difference]: Finished difference Result 42 states and 69 transitions. [2022-11-19 07:52:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:52:42,948 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-19 07:52:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:42,960 INFO L225 Difference]: With dead ends: 42 [2022-11-19 07:52:42,961 INFO L226 Difference]: Without dead ends: 42 [2022-11-19 07:52:42,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:52:42,969 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:42,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:52:42,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-19 07:52:43,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-19 07:52:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 2.225806451612903) internal successors, (69), 41 states have internal predecessors, (69), 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) [2022-11-19 07:52:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2022-11-19 07:52:43,033 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 1 [2022-11-19 07:52:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:43,033 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2022-11-19 07:52:43,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 07:52:43,041 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2022-11-19 07:52:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:52:43,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:43,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:52:43,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:52:43,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-19 07:52:43,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:43,045 INFO L85 PathProgramCache]: Analyzing trace with hash 200957, now seen corresponding path program 1 times [2022-11-19 07:52:43,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:43,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304545192] [2022-11-19 07:52:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:43,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:52:43,137 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:52:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:52:43,237 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:52:43,237 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:52:43,240 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2022-11-19 07:52:43,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2022-11-19 07:52:43,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2022-11-19 07:52:43,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2022-11-19 07:52:43,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2022-11-19 07:52:43,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2022-11-19 07:52:43,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2022-11-19 07:52:43,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2022-11-19 07:52:43,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining) [2022-11-19 07:52:43,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining) [2022-11-19 07:52:43,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:52:43,259 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 07:52:43,274 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-19 07:52:43,279 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:52:43,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:52:43 BasicIcfg [2022-11-19 07:52:43,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:52:43,308 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:52:43,308 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:52:43,309 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:52:43,309 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:52:37" (3/4) ... [2022-11-19 07:52:43,312 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 07:52:43,355 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:52:43,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:52:43,356 INFO L158 Benchmark]: Toolchain (without parser) took 6949.42ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 80.9MB in the beginning and 106.5MB in the end (delta: -25.7MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-11-19 07:52:43,356 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory was 87.3MB in the beginning and 87.3MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:52:43,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 799.66ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 84.3MB in the end (delta: -3.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:52:43,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.20ms. Allocated memory is still 117.4MB. Free memory was 84.3MB in the beginning and 82.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:52:43,358 INFO L158 Benchmark]: Boogie Preprocessor took 30.85ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 81.3MB in the end (delta: 952.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:52:43,359 INFO L158 Benchmark]: RCFGBuilder took 640.76ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 68.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:52:43,359 INFO L158 Benchmark]: TraceAbstraction took 5348.73ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 68.1MB in the beginning and 108.6MB in the end (delta: -40.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:52:43,360 INFO L158 Benchmark]: Witness Printer took 46.91ms. Allocated memory is still 155.2MB. Free memory was 108.6MB in the beginning and 106.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:52:43,362 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory was 87.3MB in the beginning and 87.3MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 799.66ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 84.3MB in the end (delta: -3.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.20ms. Allocated memory is still 117.4MB. Free memory was 84.3MB in the beginning and 82.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.85ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 81.3MB in the end (delta: 952.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 640.76ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 68.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5348.73ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 68.1MB in the beginning and 108.6MB in the end (delta: -40.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 46.91ms. Allocated memory is still 155.2MB. Free memory was 108.6MB in the beginning and 106.5MB 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: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 60 PlacesBefore, 20 PlacesAfterwards, 56 TransitionsBefore, 16 TransitionsAfterwards, 324 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 54 TotalNumberOfCompositions, 660 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 491, independent: 429, independent conditional: 0, independent unconditional: 429, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 237, independent: 220, independent conditional: 0, independent unconditional: 220, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 237, independent: 210, independent conditional: 0, independent unconditional: 210, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 172, independent: 64, independent conditional: 0, independent unconditional: 64, dependent: 108, dependent conditional: 0, dependent unconditional: 108, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 491, independent: 209, independent conditional: 0, independent unconditional: 209, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 237, unknown conditional: 0, unknown unconditional: 237] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L680] 0 int *p = &data, *q; [L679] 0 int data; [L681] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, data={1:0}, id={3:0}, mutex={2:0}, p={25:27}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, q={0:0}] [L691] 0 q = p [L693] 0 *q = 8 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 688]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 690]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 68 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 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! [2022-11-19 07:52:43,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679c7a18-f3b5-48bb-ae51-5bcd92ab69c2/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)