./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 9bd2c7ff 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_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:14:41,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:14:41,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 05:14:41,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:14:41,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:14:41,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:14:41,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:14:41,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:14:41,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:14:41,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:14:41,579 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:14:41,579 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:14:41,580 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:14:41,581 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:14:41,581 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:14:41,582 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:14:41,582 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:14:41,583 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:14:41,583 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:14:41,584 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:14:41,584 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:14:41,585 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:14:41,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:14:41,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:14:41,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:14:41,588 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:14:41,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:14:41,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:14:41,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:14:41,590 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:14:41,590 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:14:41,591 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:14:41,591 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:14:41,592 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:14:41,592 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:14:41,593 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:14:41,593 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:14:41,594 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:14:41,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:14:41,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:41,595 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:14:41,595 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:14:41,596 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:14:41,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:14:41,596 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:14:41,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:14:41,597 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb [2023-11-19 05:14:41,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:14:41,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:14:41,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:14:41,923 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:14:41,924 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:14:41,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-19 05:14:44,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:14:45,403 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:14:45,404 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-19 05:14:45,432 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/data/c1510e2a8/99bc3948d23e4cf4a0a95267fa2ba53f/FLAGb8e6f9501 [2023-11-19 05:14:45,448 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/data/c1510e2a8/99bc3948d23e4cf4a0a95267fa2ba53f [2023-11-19 05:14:45,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:14:45,452 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:14:45,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:45,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:14:45,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:14:45,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:45" (1/1) ... [2023-11-19 05:14:45,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63dd8367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:45, skipping insertion in model container [2023-11-19 05:14:45,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:45" (1/1) ... [2023-11-19 05:14:45,524 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:14:46,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:46,552 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:14:46,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:46,816 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:14:46,817 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:14:46,824 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:14:46,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46 WrapperNode [2023-11-19 05:14:46,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:46,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:46,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:14:46,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:14:46,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46" (1/1) ... [2023-11-19 05:14:46,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46" (1/1) ... [2023-11-19 05:14:47,094 INFO L138 Inliner]: procedures = 397, calls = 219, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 3807 [2023-11-19 05:14:47,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:47,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:14:47,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:14:47,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:14:47,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46" (1/1) ... [2023-11-19 05:14:47,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46" (1/1) ... [2023-11-19 05:14:47,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46" (1/1) ... [2023-11-19 05:14:47,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46" (1/1) ... [2023-11-19 05:14:47,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46" (1/1) ... [2023-11-19 05:14:47,315 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46" (1/1) ... [2023-11-19 05:14:47,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46" (1/1) ... [2023-11-19 05:14:47,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46" (1/1) ... [2023-11-19 05:14:47,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:14:47,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:14:47,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:14:47,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:14:47,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46" (1/1) ... [2023-11-19 05:14:47,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:47,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:47,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:14:47,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9394a80-49b5-4998-b208-67630a7b9645/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:14:47,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 05:14:47,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:14:47,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 05:14:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:14:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:14:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:14:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2023-11-19 05:14:47,484 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2023-11-19 05:14:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2023-11-19 05:14:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2023-11-19 05:14:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2023-11-19 05:14:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2023-11-19 05:14:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:14:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:14:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:14:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:14:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:14:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:14:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2023-11-19 05:14:47,487 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2023-11-19 05:14:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2023-11-19 05:14:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2023-11-19 05:14:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2023-11-19 05:14:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2023-11-19 05:14:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2023-11-19 05:14:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2023-11-19 05:14:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:14:47,493 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:14:47,948 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:14:47,949 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:14:53,524 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:15:01,427 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:15:01,427 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:15:01,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:01 BoogieIcfgContainer [2023-11-19 05:15:01,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:15:01,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:15:01,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:15:01,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:15:01,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:14:45" (1/3) ... [2023-11-19 05:15:01,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5795c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:01, skipping insertion in model container [2023-11-19 05:15:01,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:46" (2/3) ... [2023-11-19 05:15:01,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5795c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:01, skipping insertion in model container [2023-11-19 05:15:01,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:01" (3/3) ... [2023-11-19 05:15:01,461 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2023-11-19 05:15:01,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:15:01,485 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1344 error locations. [2023-11-19 05:15:01,485 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:15:04,678 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:15:04,774 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:15:04,798 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 3752 places, 4029 transitions, 8086 flow [2023-11-19 05:15:04,804 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 3752 places, 4029 transitions, 8086 flow [2023-11-19 05:15:04,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 3752 places, 4029 transitions, 8086 flow [2023-11-19 05:15:18,217 INFO L124 PetriNetUnfolderBase]: 299/4022 cut-off events. [2023-11-19 05:15:18,217 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 05:15:18,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4044 conditions, 4022 events. 299/4022 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 32066 event pairs, 0 based on Foata normal form. 0/2379 useless extension candidates. Maximal degree in co-relation 3967. Up to 8 conditions per place. [2023-11-19 05:15:24,498 INFO L119 LiptonReduction]: Number of co-enabled transitions 13291628