./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 30e01a73 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_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire --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-30e01a7 [2023-11-23 21:13:48,644 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:13:48,722 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 21:13:48,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:13:48,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:13:48,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:13:48,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:13:48,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:13:48,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:13:48,759 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:13:48,759 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:13:48,760 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:13:48,761 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:13:48,761 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:13:48,762 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:13:48,762 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:13:48,763 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:13:48,764 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:13:48,764 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:13:48,765 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:13:48,765 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:13:48,766 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:13:48,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:13:48,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:13:48,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:13:48,769 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:13:48,769 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:13:48,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:13:48,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:13:48,771 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:13:48,772 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:13:48,772 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:13:48,773 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:13:48,773 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:13:48,774 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:13:48,775 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:13:48,775 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:13:48,776 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:13:48,776 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:13:48,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:13:48,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:48,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:13:48,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:13:48,779 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:13:48,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:13:48,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:13:48,780 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:13:48,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:13:48,781 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_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb [2023-11-23 21:13:49,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:13:49,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:13:49,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:13:49,135 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:13:49,135 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:13:49,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-23 21:13:52,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:13:52,791 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:13:52,794 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-23 21:13:52,819 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/data/0cde76685/2105ce8da0d44df2a4c5d2e40054cff7/FLAG7273235b2 [2023-11-23 21:13:52,834 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/data/0cde76685/2105ce8da0d44df2a4c5d2e40054cff7 [2023-11-23 21:13:52,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:13:52,839 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:13:52,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:52,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:13:52,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:13:52,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:52" (1/1) ... [2023-11-23 21:13:52,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2216a599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:52, skipping insertion in model container [2023-11-23 21:13:52,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:52" (1/1) ... [2023-11-23 21:13:52,938 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:13:54,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:54,039 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:13:54,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:54,351 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:54,351 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:54,359 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:13:54,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54 WrapperNode [2023-11-23 21:13:54,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:54,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:54,361 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:13:54,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:13:54,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54" (1/1) ... [2023-11-23 21:13:54,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54" (1/1) ... [2023-11-23 21:13:54,600 INFO L138 Inliner]: procedures = 397, calls = 219, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 3807 [2023-11-23 21:13:54,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:54,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:13:54,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:13:54,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:13:54,612 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54" (1/1) ... [2023-11-23 21:13:54,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54" (1/1) ... [2023-11-23 21:13:54,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54" (1/1) ... [2023-11-23 21:13:54,642 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54" (1/1) ... [2023-11-23 21:13:54,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54" (1/1) ... [2023-11-23 21:13:54,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54" (1/1) ... [2023-11-23 21:13:54,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54" (1/1) ... [2023-11-23 21:13:54,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54" (1/1) ... [2023-11-23 21:13:54,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:13:54,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:13:54,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:13:54,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:13:54,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54" (1/1) ... [2023-11-23 21:13:54,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:54,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:54,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:13:54,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ccb777-8444-48ed-9831-51745e90e08d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:13:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:13:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:13:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:13:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:13:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:13:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:13:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2023-11-23 21:13:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2023-11-23 21:13:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2023-11-23 21:13:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2023-11-23 21:13:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2023-11-23 21:13:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2023-11-23 21:13:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:13:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:13:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:13:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:13:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:13:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:13:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2023-11-23 21:13:54,983 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2023-11-23 21:13:54,983 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2023-11-23 21:13:54,983 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2023-11-23 21:13:54,983 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2023-11-23 21:13:54,983 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2023-11-23 21:13:54,983 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2023-11-23 21:13:54,983 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2023-11-23 21:13:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:13:54,987 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:13:55,428 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:13:55,431 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:14:01,147 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:14:11,510 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:14:11,510 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:14:11,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:11 BoogieIcfgContainer [2023-11-23 21:14:11,512 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:14:11,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:14:11,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:14:11,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:14:11,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:13:52" (1/3) ... [2023-11-23 21:14:11,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6332ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:11, skipping insertion in model container [2023-11-23 21:14:11,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:54" (2/3) ... [2023-11-23 21:14:11,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6332ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:11, skipping insertion in model container [2023-11-23 21:14:11,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:11" (3/3) ... [2023-11-23 21:14:11,521 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2023-11-23 21:14:11,543 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:14:11,543 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1344 error locations. [2023-11-23 21:14:11,543 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:14:14,216 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:14:14,301 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 2045 places, 2135 transitions, 4298 flow