./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 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_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 --- 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-b5237d8 [2022-11-21 16:58:43,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:58:43,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:58:43,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:58:43,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:58:43,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:58:43,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:58:43,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:58:43,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:58:43,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:58:43,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:58:43,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:58:43,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:58:43,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:58:43,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:58:43,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:58:43,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:58:43,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:58:43,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:58:43,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:58:43,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:58:43,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:58:43,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:58:43,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:58:43,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:58:43,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:58:43,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:58:43,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:58:43,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:58:43,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:58:43,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:58:43,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:58:43,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:58:43,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:58:43,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:58:43,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:58:43,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:58:43,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:58:43,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:58:43,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:58:43,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:58:43,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 16:58:43,965 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:58:43,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:58:43,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:58:43,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:58:43,970 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:58:43,971 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:58:43,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:58:43,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:58:43,972 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:58:43,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:58:43,974 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:58:43,974 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:58:43,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:58:43,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:58:43,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:58:43,975 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:58:43,975 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:58:43,976 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:58:43,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:58:43,976 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:58:43,976 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:58:43,977 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:58:43,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:58:43,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:58:43,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:58:43,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:58:43,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:58:43,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:58:43,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:58:43,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:58:43,980 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_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2022-11-21 16:58:44,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:58:44,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:58:44,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:58:44,392 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:58:44,393 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:58:44,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-21 16:58:47,570 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:58:48,020 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:58:48,021 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-21 16:58:48,051 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/data/10a442524/b7d52b2a8ec34857af176bf67356edf5/FLAG3e9e9d822 [2022-11-21 16:58:48,071 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/data/10a442524/b7d52b2a8ec34857af176bf67356edf5 [2022-11-21 16:58:48,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:58:48,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:58:48,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:58:48,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:58:48,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:58:48,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:58:48" (1/1) ... [2022-11-21 16:58:48,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287e6ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:48, skipping insertion in model container [2022-11-21 16:58:48,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:58:48" (1/1) ... [2022-11-21 16:58:48,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:58:48,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:58:49,163 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_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-21 16:58:49,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:58:49,218 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:58:49,289 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_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-21 16:58:49,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:58:49,470 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:58:49,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49 WrapperNode [2022-11-21 16:58:49,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:58:49,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:58:49,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:58:49,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:58:49,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49" (1/1) ... [2022-11-21 16:58:49,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49" (1/1) ... [2022-11-21 16:58:49,660 INFO L138 Inliner]: procedures = 397, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3713 [2022-11-21 16:58:49,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:58:49,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:58:49,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:58:49,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:58:49,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49" (1/1) ... [2022-11-21 16:58:49,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49" (1/1) ... [2022-11-21 16:58:49,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49" (1/1) ... [2022-11-21 16:58:49,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49" (1/1) ... [2022-11-21 16:58:49,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49" (1/1) ... [2022-11-21 16:58:49,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49" (1/1) ... [2022-11-21 16:58:49,881 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49" (1/1) ... [2022-11-21 16:58:49,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49" (1/1) ... [2022-11-21 16:58:49,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:58:49,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:58:49,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:58:49,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:58:49,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49" (1/1) ... [2022-11-21 16:58:49,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:58:49,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:58:49,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:58:49,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98c4c89-46c8-44a6-8224-b07eaf3fc6d6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:58:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:58:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:58:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:58:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:58:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:58:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 16:58:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2022-11-21 16:58:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2022-11-21 16:58:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2022-11-21 16:58:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2022-11-21 16:58:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2022-11-21 16:58:50,008 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2022-11-21 16:58:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:58:50,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:58:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:58:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 16:58:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 16:58:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:58:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2022-11-21 16:58:50,010 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2022-11-21 16:58:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2022-11-21 16:58:50,010 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2022-11-21 16:58:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2022-11-21 16:58:50,011 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2022-11-21 16:58:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2022-11-21 16:58:50,011 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2022-11-21 16:58:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:58:50,015 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:58:50,614 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:58:50,619 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:58:56,579 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:59:02,874 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:59:02,875 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:59:02,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:59:02 BoogieIcfgContainer [2022-11-21 16:59:02,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:59:02,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:59:02,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:59:02,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:59:02,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:58:48" (1/3) ... [2022-11-21 16:59:02,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5567ca25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:59:02, skipping insertion in model container [2022-11-21 16:59:02,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:49" (2/3) ... [2022-11-21 16:59:02,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5567ca25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:59:02, skipping insertion in model container [2022-11-21 16:59:02,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:59:02" (3/3) ... [2022-11-21 16:59:02,899 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2022-11-21 16:59:02,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:59:02,925 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1344 error locations. [2022-11-21 16:59:02,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:59:05,607 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 16:59:05,692 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 16:59:05,708 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 3786 places, 3911 transitions, 7857 flow [2022-11-21 16:59:05,712 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 3786 places, 3911 transitions, 7857 flow [2022-11-21 16:59:05,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 3786 places, 3911 transitions, 7857 flow [2022-11-21 16:59:17,681 INFO L130 PetriNetUnfolder]: 147/3904 cut-off events. [2022-11-21 16:59:17,682 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:59:18,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3926 conditions, 3904 events. 147/3904 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 31773 event pairs, 0 based on Foata normal form. 0/2413 useless extension candidates. Maximal degree in co-relation 3844. Up to 6 conditions per place. [2022-11-21 16:59:22,153 INFO L119 LiptonReduction]: Number of co-enabled transitions 12477512 [2022-11-21 17:01:08,775 WARN L233 SmtUtils]: Spent 10.73s on a formula simplification. DAG size of input: 274 DAG size of output: 239 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 17:01:27,202 WARN L233 SmtUtils]: Spent 14.10s on a formula simplification. DAG size of input: 292 DAG size of output: 254 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 17:01:32,769 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 249 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 17:04:05,219 WARN L233 SmtUtils]: Spent 2.54m on a formula simplification. DAG size of input: 469 DAG size of output: 411 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 17:05:13,463 WARN L233 SmtUtils]: Spent 1.14m on a formula simplification that was a NOOP. DAG size: 404 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 17:07:49,562 WARN L233 SmtUtils]: Spent 2.60m on a formula simplification. DAG size of input: 519 DAG size of output: 457 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 17:09:01,842 WARN L233 SmtUtils]: Spent 1.20m on a formula simplification that was a NOOP. DAG size: 449 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 17:10:11,601 WARN L233 SmtUtils]: Spent 9.86s on a formula simplification. DAG size of input: 274 DAG size of output: 239 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 17:10:28,340 WARN L233 SmtUtils]: Spent 12.19s on a formula simplification. DAG size of input: 292 DAG size of output: 254 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 17:10:35,255 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification that was a NOOP. DAG size: 249 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 17:12:13,304 WARN L233 SmtUtils]: Spent 1.63m on a formula simplification. DAG size of input: 441 DAG size of output: 395 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 17:12:54,664 WARN L233 SmtUtils]: Spent 41.35s on a formula simplification that was a NOOP. DAG size: 390 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)