./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh --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 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:11:04,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:11:04,645 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 18:11:04,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:11:04,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:11:04,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:11:04,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:11:04,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:11:04,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:11:04,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:11:04,683 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:11:04,683 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:11:04,684 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:11:04,684 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:11:04,685 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:11:04,685 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:11:04,686 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:11:04,687 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:11:04,687 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:11:04,688 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:11:04,688 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:11:04,689 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:11:04,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 18:11:04,690 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 18:11:04,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:11:04,691 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:11:04,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:11:04,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:11:04,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:11:04,693 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 18:11:04,693 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 18:11:04,702 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 18:11:04,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:11:04,702 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:11:04,703 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:11:04,703 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:11:04,703 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:11:04,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:11:04,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:11:04,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:11:04,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:11:04,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:11:04,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:11:04,706 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:11:04,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:11:04,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:11:04,707 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:11:04,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:11:04,708 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_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f [2023-12-02 18:11:04,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:11:04,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:11:04,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:11:04,949 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:11:04,950 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:11:04,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-12-02 18:11:07,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:11:07,899 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:11:07,900 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-12-02 18:11:07,908 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/data/51515f966/32a2f7265a054ab9a6ebe645635ac652/FLAG6f9fc2a96 [2023-12-02 18:11:07,921 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/data/51515f966/32a2f7265a054ab9a6ebe645635ac652 [2023-12-02 18:11:07,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:11:07,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:11:07,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:11:07,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:11:07,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:11:07,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:11:07" (1/1) ... [2023-12-02 18:11:07,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32095905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:07, skipping insertion in model container [2023-12-02 18:11:07,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:11:07" (1/1) ... [2023-12-02 18:11:07,963 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:11:08,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:11:08,143 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:11:08,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:11:08,182 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:11:08,182 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:11:08,188 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:11:08,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08 WrapperNode [2023-12-02 18:11:08,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:11:08,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:11:08,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:11:08,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:11:08,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08" (1/1) ... [2023-12-02 18:11:08,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08" (1/1) ... [2023-12-02 18:11:08,235 INFO L138 Inliner]: procedures = 25, calls = 99, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 272 [2023-12-02 18:11:08,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:11:08,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:11:08,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:11:08,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:11:08,243 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08" (1/1) ... [2023-12-02 18:11:08,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08" (1/1) ... [2023-12-02 18:11:08,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08" (1/1) ... [2023-12-02 18:11:08,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08" (1/1) ... [2023-12-02 18:11:08,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08" (1/1) ... [2023-12-02 18:11:08,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08" (1/1) ... [2023-12-02 18:11:08,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08" (1/1) ... [2023-12-02 18:11:08,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08" (1/1) ... [2023-12-02 18:11:08,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:11:08,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:11:08,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:11:08,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:11:08,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08" (1/1) ... [2023-12-02 18:11:08,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:11:08,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:11:08,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:11:08,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52ee456-ba08-45a5-bfef-1360b83a084a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:11:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:11:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:11:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:11:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:11:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 18:11:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 18:11:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 18:11:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 18:11:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-02 18:11:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-02 18:11:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-02 18:11:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-02 18:11:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:11:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-12-02 18:11:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-12-02 18:11:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-12-02 18:11:08,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-12-02 18:11:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 18:11:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 18:11:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:11:08,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:11:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:11:08,339 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 18:11:08,439 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:11:08,441 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:11:08,806 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:11:09,103 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:11:09,104 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 18:11:09,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:11:09 BoogieIcfgContainer [2023-12-02 18:11:09,104 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:11:09,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:11:09,108 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:11:09,111 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:11:09,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:11:07" (1/3) ... [2023-12-02 18:11:09,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a593b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:11:09, skipping insertion in model container [2023-12-02 18:11:09,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:11:08" (2/3) ... [2023-12-02 18:11:09,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a593b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:11:09, skipping insertion in model container [2023-12-02 18:11:09,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:11:09" (3/3) ... [2023-12-02 18:11:09,114 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2023-12-02 18:11:09,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:11:09,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-12-02 18:11:09,135 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 18:11:09,248 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-12-02 18:11:09,283 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 138 places, 123 transitions, 312 flow [2023-12-02 18:12:01,219 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1265050 states, 1264768 states have (on average 5.696677967817022) internal successors, (7204976), 1265049 states have internal predecessors, (7204976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:12:01,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:12:01,245 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@515a8ee4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:12:01,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2023-12-02 18:12:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 1265050 states, 1264768 states have (on average 5.696677967817022) internal successors, (7204976), 1265049 states have internal predecessors, (7204976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:12:03,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 18:12:03,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:12:03,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 18:12:03,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-12-02 18:12:03,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:12:03,264 INFO L85 PathProgramCache]: Analyzing trace with hash 17364, now seen corresponding path program 1 times [2023-12-02 18:12:03,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:12:03,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083338664] [2023-12-02 18:12:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:12:03,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:12:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:12:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:12:03,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:12:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083338664] [2023-12-02 18:12:03,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083338664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:12:03,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:12:03,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:12:03,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662495793] [2023-12-02 18:12:03,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:12:03,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:12:03,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:12:03,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:12:03,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:12:05,792 INFO L87 Difference]: Start difference. First operand has 1265050 states, 1264768 states have (on average 5.696677967817022) internal successors, (7204976), 1265049 states have internal predecessors, (7204976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:12:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:12:28,538 INFO L93 Difference]: Finished difference Result 1017562 states and 5731640 transitions. [2023-12-02 18:12:28,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:12:28,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 18:12:28,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:12:43,822 INFO L225 Difference]: With dead ends: 1017562 [2023-12-02 18:12:43,822 INFO L226 Difference]: Without dead ends: 1017562 [2023-12-02 18:12:43,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:12:43,827 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 93 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:12:43,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 82 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:12:48,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017562 states.