./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS --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 6cbe8dd40fecf4391efe5e4ba3939c64a9fdbbfb53083def47a68bbefda43a3c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:12:05,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:12:05,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:12:05,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:12:05,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:12:05,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:12:05,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:12:05,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:12:05,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:12:05,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:12:05,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:12:05,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:12:05,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:12:05,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:12:05,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:12:05,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:12:05,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:12:05,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:12:05,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:12:05,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:12:05,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:12:05,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:12:05,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:12:05,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:12:05,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:12:05,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:12:05,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:12:05,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:12:05,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:12:05,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:12:05,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:12:05,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:12:05,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:12:05,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:12:05,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:12:05,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:12:05,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:12:05,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:12:05,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:12:05,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:12:05,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:12:05,553 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 08:12:05,596 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:12:05,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:12:05,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:12:05,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:12:05,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:12:05,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:12:05,598 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:12:05,599 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:12:05,599 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:12:05,599 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:12:05,599 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:12:05,600 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:12:05,600 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:12:05,600 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:12:05,600 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:12:05,601 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:12:05,601 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:12:05,601 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:12:05,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 08:12:05,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 08:12:05,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:12:05,603 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:12:05,603 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:12:05,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:12:05,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:12:05,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:12:05,604 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 08:12:05,605 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 08:12:05,605 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 08:12:05,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:12:05,606 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:12:05,606 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:12:05,606 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:12:05,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:12:05,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:12:05,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:12:05,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:12:05,608 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:12:05,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:12:05,608 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:12:05,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:12:05,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:12:05,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cbe8dd40fecf4391efe5e4ba3939c64a9fdbbfb53083def47a68bbefda43a3c [2022-11-19 08:12:06,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:12:06,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:12:06,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:12:06,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:12:06,040 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:12:06,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2022-11-19 08:12:06,176 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/data/250c5e8bf/7ebac839a9f144c2bea60781d5f31647/FLAG20d3ac777 [2022-11-19 08:12:06,745 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:12:06,745 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2022-11-19 08:12:06,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/data/250c5e8bf/7ebac839a9f144c2bea60781d5f31647/FLAG20d3ac777 [2022-11-19 08:12:07,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/data/250c5e8bf/7ebac839a9f144c2bea60781d5f31647 [2022-11-19 08:12:07,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:12:07,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:12:07,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:12:07,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:12:07,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:12:07,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc8be85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07, skipping insertion in model container [2022-11-19 08:12:07,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:12:07,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:12:07,429 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c[5938,5951] [2022-11-19 08:12:07,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:12:07,446 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:12:07,480 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c[5938,5951] [2022-11-19 08:12:07,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:12:07,496 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:12:07,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07 WrapperNode [2022-11-19 08:12:07,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:12:07,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:12:07,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:12:07,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:12:07,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,539 INFO L138 Inliner]: procedures = 25, calls = 120, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 248 [2022-11-19 08:12:07,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:12:07,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:12:07,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:12:07,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:12:07,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:12:07,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:12:07,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:12:07,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:12:07,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07" (1/1) ... [2022-11-19 08:12:07,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:12:07,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:07,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:12:07,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0318691-a0e6-4817-9537-caa2667b4850/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:12:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:12:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:12:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:12:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:12:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-19 08:12:07,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-19 08:12:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-19 08:12:07,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-19 08:12:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-19 08:12:07,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-19 08:12:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-19 08:12:07,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-19 08:12:07,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:12:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-19 08:12:07,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-19 08:12:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-19 08:12:07,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-19 08:12:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 08:12:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 08:12:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:12:07,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:12:07,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:12:07,677 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 08:12:07,809 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:12:07,811 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:12:08,408 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:12:08,497 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:12:08,498 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 08:12:08,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:12:08 BoogieIcfgContainer [2022-11-19 08:12:08,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:12:08,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:12:08,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:12:08,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:12:08,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:12:07" (1/3) ... [2022-11-19 08:12:08,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628eb1d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:12:08, skipping insertion in model container [2022-11-19 08:12:08,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:07" (2/3) ... [2022-11-19 08:12:08,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628eb1d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:12:08, skipping insertion in model container [2022-11-19 08:12:08,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:12:08" (3/3) ... [2022-11-19 08:12:08,511 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier-loop.wvr.c [2022-11-19 08:12:08,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:12:08,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-19 08:12:08,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 08:12:08,684 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-19 08:12:08,739 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:12:08,756 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 284 transitions, 640 flow [2022-11-19 08:12:08,759 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 284 transitions, 640 flow [2022-11-19 08:12:08,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 284 transitions, 640 flow [2022-11-19 08:12:08,921 INFO L130 PetriNetUnfolder]: 14/252 cut-off events. [2022-11-19 08:12:08,921 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-19 08:12:08,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 252 events. 14/252 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 489 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 208. Up to 3 conditions per place. [2022-11-19 08:12:08,940 INFO L119 LiptonReduction]: Number of co-enabled transitions 14400 [2022-11-19 08:12:15,178 INFO L134 LiptonReduction]: Checked pairs total: 103008 [2022-11-19 08:12:15,178 INFO L136 LiptonReduction]: Total number of compositions: 194 [2022-11-19 08:12:15,187 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 144 places, 133 transitions, 338 flow [2022-11-19 08:12:53,744 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 761257 states, 760975 states have (on average 5.84700154407175) internal successors, (4449422), 761256 states have internal predecessors, (4449422), 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) [2022-11-19 08:12:53,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:12:53,815 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;@4d9071, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:12:53,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2022-11-19 08:12:55,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 761257 states, 760975 states have (on average 5.84700154407175) internal successors, (4449422), 761256 states have internal predecessors, (4449422), 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) [2022-11-19 08:12:55,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 08:12:55,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:55,316 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 08:12:55,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-19 08:12:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1076, now seen corresponding path program 1 times [2022-11-19 08:12:55,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:55,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444165896] [2022-11-19 08:12:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:55,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:12:55,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:55,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444165896] [2022-11-19 08:12:55,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444165896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:55,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:55,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 08:12:55,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806814548] [2022-11-19 08:12:55,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:55,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:12:55,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:55,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:12:55,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:12:57,030 INFO L87 Difference]: Start difference. First operand has 761257 states, 760975 states have (on average 5.84700154407175) internal successors, (4449422), 761256 states have internal predecessors, (4449422), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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)