./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 e7bb482b 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_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp --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 --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:08:42,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:08:42,892 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 21:08:42,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:08:42,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:08:42,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:08:42,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:08:42,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:08:42,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:08:42,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:08:42,949 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:08:42,949 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:08:42,950 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:08:42,951 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:08:42,952 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:08:42,952 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:08:42,953 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:08:42,953 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:08:42,954 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:08:42,954 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:08:42,955 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:08:42,955 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:08:42,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:08:42,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:08:42,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:08:42,958 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:08:42,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:08:42,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:08:42,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:08:42,960 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:08:42,962 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:08:42,962 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:08:42,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:08:42,963 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:08:42,963 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:08:42,963 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:08:42,964 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:08:42,964 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:08:42,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:08:42,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:08:42,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:08:42,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:08:42,966 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:08:42,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:08:42,967 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:08:42,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:08:42,967 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_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2023-11-06 21:08:43,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:08:43,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:08:43,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:08:43,323 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:08:43,324 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:08:43,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-06 21:08:46,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:08:46,905 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:08:46,905 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-06 21:08:46,941 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/data/00baab826/784181d799ce43e3bad2cffc1bf1978f/FLAGe41c3c10b [2023-11-06 21:08:46,957 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/data/00baab826/784181d799ce43e3bad2cffc1bf1978f [2023-11-06 21:08:46,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:08:46,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:08:46,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:08:46,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:08:46,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:08:46,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:08:46" (1/1) ... [2023-11-06 21:08:46,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104328d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:46, skipping insertion in model container [2023-11-06 21:08:46,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:08:46" (1/1) ... [2023-11-06 21:08:47,074 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:08:48,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:08:48,092 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:08:48,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:08:48,367 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:08:48,367 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:08:48,376 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:08:48,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48 WrapperNode [2023-11-06 21:08:48,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:08:48,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:08:48,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:08:48,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:08:48,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48" (1/1) ... [2023-11-06 21:08:48,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48" (1/1) ... [2023-11-06 21:08:48,631 INFO L138 Inliner]: procedures = 397, calls = 215, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 3793 [2023-11-06 21:08:48,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:08:48,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:08:48,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:08:48,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:08:48,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48" (1/1) ... [2023-11-06 21:08:48,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48" (1/1) ... [2023-11-06 21:08:48,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48" (1/1) ... [2023-11-06 21:08:48,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48" (1/1) ... [2023-11-06 21:08:48,799 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48" (1/1) ... [2023-11-06 21:08:48,817 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48" (1/1) ... [2023-11-06 21:08:48,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48" (1/1) ... [2023-11-06 21:08:48,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48" (1/1) ... [2023-11-06 21:08:48,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:08:48,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:08:48,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:08:48,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:08:48,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48" (1/1) ... [2023-11-06 21:08:48,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:08:48,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:08:48,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:08:48,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3381559-dfb2-458b-a92f-583b888cc911/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:08:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:08:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2023-11-06 21:08:48,958 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2023-11-06 21:08:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2023-11-06 21:08:48,958 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2023-11-06 21:08:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2023-11-06 21:08:48,959 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2023-11-06 21:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:08:48,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:08:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:08:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 21:08:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:08:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2023-11-06 21:08:48,960 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2023-11-06 21:08:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2023-11-06 21:08:48,961 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2023-11-06 21:08:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2023-11-06 21:08:48,961 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2023-11-06 21:08:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2023-11-06 21:08:48,961 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2023-11-06 21:08:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:08:48,965 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:08:49,370 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:08:49,377 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:08:55,346 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:09:03,210 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:09:03,211 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:09:03,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:09:03 BoogieIcfgContainer [2023-11-06 21:09:03,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:09:03,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:09:03,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:09:03,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:09:03,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:08:46" (1/3) ... [2023-11-06 21:09:03,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d92e8a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:09:03, skipping insertion in model container [2023-11-06 21:09:03,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:08:48" (2/3) ... [2023-11-06 21:09:03,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d92e8a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:09:03, skipping insertion in model container [2023-11-06 21:09:03,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:09:03" (3/3) ... [2023-11-06 21:09:03,229 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2023-11-06 21:09:03,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:09:03,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1344 error locations. [2023-11-06 21:09:03,253 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:09:06,248 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:09:06,337 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 21:09:06,352 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 3773 places, 3898 transitions, 7824 flow [2023-11-06 21:09:06,355 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 3773 places, 3898 transitions, 7824 flow [2023-11-06 21:09:06,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 3773 places, 3898 transitions, 7824 flow