./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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba --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 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 [2022-11-22 02:08:02,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:08:02,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:08:02,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:08:02,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:08:02,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:08:02,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:08:02,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:08:02,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:08:02,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:08:02,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:08:02,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:08:02,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:08:02,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:08:02,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:08:02,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:08:02,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:08:02,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:08:02,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:08:02,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:08:02,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:08:02,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:08:02,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:08:02,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:08:02,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:08:02,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:08:02,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:08:02,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:08:02,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:08:02,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:08:02,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:08:02,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:08:02,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:08:02,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:08:02,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:08:02,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:08:02,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:08:02,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:08:02,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:08:02,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:08:02,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:08:02,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 02:08:02,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:08:02,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:08:02,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:08:02,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:08:02,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:08:02,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:08:02,350 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:08:02,350 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:08:02,350 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:08:02,350 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:08:02,351 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:08:02,352 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:08:02,352 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:08:02,352 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:08:02,352 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:08:02,352 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:08:02,353 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:08:02,353 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:08:02,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 02:08:02,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 02:08:02,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:08:02,354 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:08:02,354 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:08:02,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:08:02,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:08:02,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:08:02,355 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 02:08:02,356 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 02:08:02,356 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 02:08:02,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:08:02,356 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:08:02,356 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:08:02,357 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:08:02,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:08:02,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:08:02,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:08:02,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:08:02,358 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:08:02,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:08:02,358 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:08:02,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:08:02,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:08:02,358 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_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2022-11-22 02:08:02,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:08:02,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:08:02,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:08:02,724 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:08:02,724 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:08:02,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-22 02:08:05,854 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:08:06,168 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:08:06,169 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-22 02:08:06,206 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/data/f5bfdf2e2/61ee66c202d24b48b9831735d935adf1/FLAGde16067bc [2022-11-22 02:08:06,222 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/data/f5bfdf2e2/61ee66c202d24b48b9831735d935adf1 [2022-11-22 02:08:06,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:08:06,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:08:06,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:08:06,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:08:06,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:08:06,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:08:06" (1/1) ... [2022-11-22 02:08:06,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba34f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:06, skipping insertion in model container [2022-11-22 02:08:06,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:08:06" (1/1) ... [2022-11-22 02:08:06,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:08:06,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:08:07,091 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_ccda9a07-80e0-47fb-bead-65264825b11c/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-22 02:08:07,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:08:07,166 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:08:07,278 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_ccda9a07-80e0-47fb-bead-65264825b11c/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-22 02:08:07,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:08:07,437 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:08:07,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07 WrapperNode [2022-11-22 02:08:07,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:08:07,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:08:07,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:08:07,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:08:07,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07" (1/1) ... [2022-11-22 02:08:07,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07" (1/1) ... [2022-11-22 02:08:07,666 INFO L138 Inliner]: procedures = 397, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3713 [2022-11-22 02:08:07,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:08:07,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:08:07,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:08:07,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:08:07,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07" (1/1) ... [2022-11-22 02:08:07,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07" (1/1) ... [2022-11-22 02:08:07,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07" (1/1) ... [2022-11-22 02:08:07,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07" (1/1) ... [2022-11-22 02:08:07,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07" (1/1) ... [2022-11-22 02:08:07,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07" (1/1) ... [2022-11-22 02:08:07,857 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07" (1/1) ... [2022-11-22 02:08:07,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07" (1/1) ... [2022-11-22 02:08:07,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:08:08,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:08:08,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:08:08,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:08:08,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07" (1/1) ... [2022-11-22 02:08:08,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:08:08,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:08:08,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:08:08,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda9a07-80e0-47fb-bead-65264825b11c/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:08:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 02:08:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:08:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 02:08:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:08:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:08:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:08:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2022-11-22 02:08:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2022-11-22 02:08:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2022-11-22 02:08:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2022-11-22 02:08:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2022-11-22 02:08:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2022-11-22 02:08:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:08:08,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:08:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:08:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:08:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:08:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:08:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2022-11-22 02:08:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2022-11-22 02:08:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2022-11-22 02:08:08,123 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2022-11-22 02:08:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2022-11-22 02:08:08,124 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2022-11-22 02:08:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2022-11-22 02:08:08,125 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2022-11-22 02:08:08,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:08:08,129 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 02:08:08,663 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:08:08,666 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:08:13,846 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:08:20,153 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:08:20,154 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 02:08:20,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:08:20 BoogieIcfgContainer [2022-11-22 02:08:20,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:08:20,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:08:20,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:08:20,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:08:20,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:08:06" (1/3) ... [2022-11-22 02:08:20,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6e2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:08:20, skipping insertion in model container [2022-11-22 02:08:20,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:07" (2/3) ... [2022-11-22 02:08:20,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6e2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:08:20, skipping insertion in model container [2022-11-22 02:08:20,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:08:20" (3/3) ... [2022-11-22 02:08:20,176 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2022-11-22 02:08:20,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:08:20,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1344 error locations. [2022-11-22 02:08:20,321 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 02:08:22,963 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 02:08:23,059 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:08:23,080 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 3786 places, 3911 transitions, 7857 flow [2022-11-22 02:08:23,085 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 3786 places, 3911 transitions, 7857 flow [2022-11-22 02:08:23,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 3786 places, 3911 transitions, 7857 flow [2022-11-22 02:08:33,457 INFO L130 PetriNetUnfolder]: 147/3904 cut-off events. [2022-11-22 02:08:33,457 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-22 02:08:33,847 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. [2022-11-22 02:08:37,169 INFO L119 LiptonReduction]: Number of co-enabled transitions 12477512 [2022-11-22 02:10:17,824 WARN L233 SmtUtils]: Spent 9.66s 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) [2022-11-22 02:10:34,773 WARN L233 SmtUtils]: Spent 12.54s 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) [2022-11-22 02:10:40,088 WARN L233 SmtUtils]: Spent 5.31s 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) [2022-11-22 02:13:07,407 WARN L233 SmtUtils]: Spent 2.46m 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) [2022-11-22 02:14:12,361 WARN L233 SmtUtils]: Spent 1.08m 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) [2022-11-22 02:16:43,507 WARN L233 SmtUtils]: Spent 2.52m 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) [2022-11-22 02:17:45,913 WARN L233 SmtUtils]: Spent 1.04m 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) [2022-11-22 02:19:02,100 WARN L233 SmtUtils]: Spent 12.59s 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) [2022-11-22 02:19:07,794 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 236 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:19:23,742 WARN L233 SmtUtils]: Spent 15.94s 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) [2022-11-22 02:19:29,989 WARN L233 SmtUtils]: Spent 6.24s 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) [2022-11-22 02:21:27,664 WARN L233 SmtUtils]: Spent 1.96m 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) [2022-11-22 02:22:20,257 WARN L233 SmtUtils]: Spent 52.59s 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)