./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.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_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/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_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/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_4e7ad508-72d5-4109-b4fd-b56b2fb790be/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 9466f27e00e9305501eee0377198b5d988616fcd0740d7b6b046dc1579fad0d0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:29:48,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:29:48,629 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:29:48,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:29:48,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:29:48,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:29:48,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:29:48,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:29:48,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:29:48,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:29:48,690 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:29:48,692 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:29:48,692 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:29:48,694 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:29:48,695 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:29:48,695 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:29:48,696 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:29:48,697 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:29:48,697 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:29:48,698 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:29:48,698 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:29:48,699 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:29:48,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:29:48,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:29:48,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:29:48,702 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:29:48,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:29:48,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:29:48,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:29:48,704 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:29:48,705 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:29:48,705 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:29:48,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:29:48,706 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:29:48,706 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:29:48,706 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:29:48,706 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:29:48,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:29:48,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:29:48,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:29:48,707 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:29:48,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:29:48,709 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:29:48,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:29:48,710 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:29:48,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:29:48,710 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_4e7ad508-72d5-4109-b4fd-b56b2fb790be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9466f27e00e9305501eee0377198b5d988616fcd0740d7b6b046dc1579fad0d0 [2023-11-06 20:29:49,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:29:49,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:29:49,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:29:49,101 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:29:49,102 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:29:49,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-11-06 20:29:52,244 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:29:52,622 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:29:52,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-11-06 20:29:52,642 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/data/c1093d992/b6f296cf7aa941e98cc452b3064faabc/FLAG705c97ca6 [2023-11-06 20:29:52,658 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/data/c1093d992/b6f296cf7aa941e98cc452b3064faabc [2023-11-06 20:29:52,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:29:52,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:29:52,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:29:52,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:29:52,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:29:52,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:29:52" (1/1) ... [2023-11-06 20:29:52,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49aace42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:52, skipping insertion in model container [2023-11-06 20:29:52,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:29:52" (1/1) ... [2023-11-06 20:29:52,726 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:29:53,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:29:53,089 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:29:53,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:29:53,221 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:29:53,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53 WrapperNode [2023-11-06 20:29:53,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:29:53,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:29:53,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:29:53,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:29:53,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53" (1/1) ... [2023-11-06 20:29:53,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53" (1/1) ... [2023-11-06 20:29:53,293 INFO L138 Inliner]: procedures = 163, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-11-06 20:29:53,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:29:53,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:29:53,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:29:53,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:29:53,304 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53" (1/1) ... [2023-11-06 20:29:53,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53" (1/1) ... [2023-11-06 20:29:53,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53" (1/1) ... [2023-11-06 20:29:53,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53" (1/1) ... [2023-11-06 20:29:53,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53" (1/1) ... [2023-11-06 20:29:53,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53" (1/1) ... [2023-11-06 20:29:53,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53" (1/1) ... [2023-11-06 20:29:53,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53" (1/1) ... [2023-11-06 20:29:53,334 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:29:53,335 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:29:53,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:29:53,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:29:53,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53" (1/1) ... [2023-11-06 20:29:53,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:29:53,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:29:53,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:29:53,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:29:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 20:29:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:29:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 20:29:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:29:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:29:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 20:29:53,417 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 20:29:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:29:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:29:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:29:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:29:53,420 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 20:29:53,576 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:29:53,579 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:29:53,778 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:29:53,785 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:29:53,785 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 20:29:53,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:29:53 BoogieIcfgContainer [2023-11-06 20:29:53,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:29:53,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:29:53,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:29:53,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:29:53,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:29:52" (1/3) ... [2023-11-06 20:29:53,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acb7c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:29:53, skipping insertion in model container [2023-11-06 20:29:53,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:53" (2/3) ... [2023-11-06 20:29:53,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acb7c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:29:53, skipping insertion in model container [2023-11-06 20:29:53,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:29:53" (3/3) ... [2023-11-06 20:29:53,805 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_2_neg.i [2023-11-06 20:29:53,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:29:53,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 20:29:53,827 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:29:53,888 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 20:29:53,924 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:29:53,940 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 74 transitions, 155 flow [2023-11-06 20:29:53,944 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 74 transitions, 155 flow [2023-11-06 20:29:53,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 155 flow [2023-11-06 20:29:53,991 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2023-11-06 20:29:53,992 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 20:29:53,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 73 events. 3/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-06 20:29:53,998 INFO L119 LiptonReduction]: Number of co-enabled transitions 480 [2023-11-06 20:29:57,259 INFO L134 LiptonReduction]: Checked pairs total: 818 [2023-11-06 20:29:57,260 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-11-06 20:29:57,274 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 16 transitions, 39 flow [2023-11-06 20:29:57,291 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 25 states have internal predecessors, (42), 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) [2023-11-06 20:29:57,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:29:57,325 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;@4e2aae52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:29:57,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-06 20:29:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 25 states have internal predecessors, (42), 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) [2023-11-06 20:29:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-06 20:29:57,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:29:57,334 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-06 20:29:57,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 20:29:57,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:29:57,346 INFO L85 PathProgramCache]: Analyzing trace with hash 304, now seen corresponding path program 1 times [2023-11-06 20:29:57,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:29:57,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188318824] [2023-11-06 20:29:57,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:29:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:29:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:29:57,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:29:57,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:29:57,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188318824] [2023-11-06 20:29:57,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188318824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:29:57,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:29:57,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 20:29:57,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215112332] [2023-11-06 20:29:57,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:29:57,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 20:29:57,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:29:57,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 20:29:57,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:29:57,522 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 25 states have internal predecessors, (42), 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) [2023-11-06 20:29:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:29:57,560 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2023-11-06 20:29:57,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 20:29:57,563 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 1 [2023-11-06 20:29:57,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:29:57,571 INFO L225 Difference]: With dead ends: 24 [2023-11-06 20:29:57,572 INFO L226 Difference]: Without dead ends: 24 [2023-11-06 20:29:57,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:29:57,576 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:29:57,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:29:57,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-06 20:29:57,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-06 20:29:57,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 23 states have internal predecessors, (35), 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) [2023-11-06 20:29:57,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2023-11-06 20:29:57,611 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 1 [2023-11-06 20:29:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:29:57,612 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2023-11-06 20:29:57,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-06 20:29:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2023-11-06 20:29:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 20:29:57,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:29:57,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 20:29:57,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:29:57,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 20:29:57,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:29:57,615 INFO L85 PathProgramCache]: Analyzing trace with hash 297405, now seen corresponding path program 1 times [2023-11-06 20:29:57,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:29:57,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042137758] [2023-11-06 20:29:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:29:57,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:29:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 20:29:57,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 20:29:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 20:29:57,702 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-06 20:29:57,703 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 20:29:57,704 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-06 20:29:57,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-06 20:29:57,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-06 20:29:57,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-06 20:29:57,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-06 20:29:57,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-06 20:29:57,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-06 20:29:57,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-11-06 20:29:57,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:29:57,711 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 20:29:57,717 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 20:29:57,717 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 20:29:57,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:29:57 BasicIcfg [2023-11-06 20:29:57,736 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 20:29:57,736 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 20:29:57,737 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 20:29:57,737 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 20:29:57,737 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:29:53" (3/4) ... [2023-11-06 20:29:57,739 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 20:29:57,741 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 20:29:57,742 INFO L158 Benchmark]: Toolchain (without parser) took 5079.46ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 124.3MB in the beginning and 119.7MB in the end (delta: 4.7MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2023-11-06 20:29:57,742 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 115.3MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:29:57,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.11ms. Allocated memory is still 157.3MB. Free memory was 123.6MB in the beginning and 104.6MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 20:29:57,743 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.65ms. Allocated memory is still 157.3MB. Free memory was 104.6MB in the beginning and 102.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:29:57,744 INFO L158 Benchmark]: Boogie Preprocessor took 39.98ms. Allocated memory is still 157.3MB. Free memory was 102.6MB in the beginning and 101.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:29:57,744 INFO L158 Benchmark]: RCFGBuilder took 452.73ms. Allocated memory is still 157.3MB. Free memory was 101.3MB in the beginning and 121.9MB in the end (delta: -20.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 20:29:57,745 INFO L158 Benchmark]: TraceAbstraction took 3945.58ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 120.9MB in the beginning and 120.4MB in the end (delta: 493.6kB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2023-11-06 20:29:57,746 INFO L158 Benchmark]: Witness Printer took 4.57ms. Allocated memory is still 188.7MB. Free memory was 120.4MB in the beginning and 119.7MB in the end (delta: 722.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:29:57,748 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 115.3MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.11ms. Allocated memory is still 157.3MB. Free memory was 123.6MB in the beginning and 104.6MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.65ms. Allocated memory is still 157.3MB. Free memory was 104.6MB in the beginning and 102.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.98ms. Allocated memory is still 157.3MB. Free memory was 102.6MB in the beginning and 101.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 452.73ms. Allocated memory is still 157.3MB. Free memory was 101.3MB in the beginning and 121.9MB in the end (delta: -20.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3945.58ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 120.9MB in the beginning and 120.4MB in the end (delta: 493.6kB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Witness Printer took 4.57ms. Allocated memory is still 188.7MB. Free memory was 120.4MB in the beginning and 119.7MB in the end (delta: 722.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 75 PlacesBefore, 19 PlacesAfterwards, 74 TransitionsBefore, 16 TransitionsAfterwards, 480 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 818 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 631, independent: 581, independent conditional: 0, independent unconditional: 581, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 407, independent: 388, independent conditional: 0, independent unconditional: 388, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 407, independent: 378, independent conditional: 0, independent unconditional: 378, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 29, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 115, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 631, independent: 193, independent conditional: 0, independent unconditional: 193, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 407, unknown conditional: 0, unknown unconditional: 407] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id; [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={5:0}, mutex1={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L685] 1 int t = __VERIFIER_nondet_int(); [L687] COND TRUE 1 t == 42 [L688] 1 glob1 = 1 [L690] 1 t = glob1 [L691] CALL 1 __VERIFIER_assert(!(t == 1)) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "13-privatized_18-first-reads_unknown_2_neg.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [glob1=1, mutex1={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 101 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 20:29:57,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/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_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/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 9466f27e00e9305501eee0377198b5d988616fcd0740d7b6b046dc1579fad0d0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:30:00,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:30:00,579 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 20:30:00,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:30:00,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:30:00,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:30:00,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:30:00,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:30:00,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:30:00,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:30:00,644 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:30:00,644 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:30:00,645 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:30:00,647 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:30:00,647 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:30:00,648 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:30:00,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:30:00,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:30:00,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:30:00,651 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:30:00,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:30:00,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:30:00,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:30:00,653 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:30:00,654 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:30:00,654 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:30:00,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:30:00,655 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:30:00,656 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 20:30:00,656 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 20:30:00,658 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:30:00,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:30:00,658 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:30:00,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:30:00,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 20:30:00,659 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:30:00,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:30:00,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:30:00,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:30:00,661 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 20:30:00,662 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 20:30:00,662 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:30:00,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:30:00,663 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_4e7ad508-72d5-4109-b4fd-b56b2fb790be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9466f27e00e9305501eee0377198b5d988616fcd0740d7b6b046dc1579fad0d0 [2023-11-06 20:30:01,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:30:01,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:30:01,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:30:01,091 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:30:01,091 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:30:01,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-11-06 20:30:04,253 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:30:04,671 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:30:04,671 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-11-06 20:30:04,688 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/data/e197b60fd/ac861cd7754346c9ad4846f2a4e174d3/FLAG6fb0fb3e3 [2023-11-06 20:30:04,704 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/data/e197b60fd/ac861cd7754346c9ad4846f2a4e174d3 [2023-11-06 20:30:04,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:30:04,709 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:30:04,711 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:30:04,711 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:30:04,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:30:04,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:30:04" (1/1) ... [2023-11-06 20:30:04,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b04da34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:04, skipping insertion in model container [2023-11-06 20:30:04,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:30:04" (1/1) ... [2023-11-06 20:30:04,774 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:30:05,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:30:05,248 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:30:05,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:30:05,376 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:30:05,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05 WrapperNode [2023-11-06 20:30:05,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:30:05,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:30:05,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:30:05,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:30:05,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05" (1/1) ... [2023-11-06 20:30:05,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05" (1/1) ... [2023-11-06 20:30:05,452 INFO L138 Inliner]: procedures = 167, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-11-06 20:30:05,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:30:05,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:30:05,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:30:05,453 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:30:05,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05" (1/1) ... [2023-11-06 20:30:05,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05" (1/1) ... [2023-11-06 20:30:05,478 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05" (1/1) ... [2023-11-06 20:30:05,480 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05" (1/1) ... [2023-11-06 20:30:05,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05" (1/1) ... [2023-11-06 20:30:05,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05" (1/1) ... [2023-11-06 20:30:05,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05" (1/1) ... [2023-11-06 20:30:05,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05" (1/1) ... [2023-11-06 20:30:05,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:30:05,521 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:30:05,522 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:30:05,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:30:05,523 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05" (1/1) ... [2023-11-06 20:30:05,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:30:05,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:30:05,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:30:05,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:30:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 20:30:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 20:30:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:30:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:30:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 20:30:05,625 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 20:30:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:30:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 20:30:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 20:30:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-06 20:30:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:30:05,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:30:05,628 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 20:30:05,777 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:30:05,779 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:30:05,972 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:30:05,979 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:30:05,980 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 20:30:05,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:30:05 BoogieIcfgContainer [2023-11-06 20:30:05,982 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:30:05,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:30:05,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:30:05,986 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:30:05,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:30:04" (1/3) ... [2023-11-06 20:30:05,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9c7e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:30:05, skipping insertion in model container [2023-11-06 20:30:05,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:05" (2/3) ... [2023-11-06 20:30:05,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9c7e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:30:05, skipping insertion in model container [2023-11-06 20:30:05,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:30:05" (3/3) ... [2023-11-06 20:30:05,989 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_2_neg.i [2023-11-06 20:30:06,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:30:06,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 20:30:06,008 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:30:06,069 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 20:30:06,103 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:30:06,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 74 transitions, 155 flow [2023-11-06 20:30:06,121 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 74 transitions, 155 flow [2023-11-06 20:30:06,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 155 flow [2023-11-06 20:30:06,164 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2023-11-06 20:30:06,164 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 20:30:06,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 73 events. 3/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-06 20:30:06,170 INFO L119 LiptonReduction]: Number of co-enabled transitions 464 [2023-11-06 20:30:12,633 INFO L134 LiptonReduction]: Checked pairs total: 803 [2023-11-06 20:30:12,633 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-11-06 20:30:12,642 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 15 transitions, 37 flow [2023-11-06 20:30:12,663 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 25 states have internal predecessors, (37), 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) [2023-11-06 20:30:12,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:30:12,702 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;@5881f262, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:30:12,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-06 20:30:12,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 25 states have internal predecessors, (37), 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) [2023-11-06 20:30:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-06 20:30:12,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:30:12,712 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-06 20:30:12,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 20:30:12,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:30:12,722 INFO L85 PathProgramCache]: Analyzing trace with hash 303, now seen corresponding path program 1 times [2023-11-06 20:30:12,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:30:12,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361804988] [2023-11-06 20:30:12,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:30:12,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:30:12,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:30:12,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 20:30:12,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 20:30:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:30:12,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 20:30:12,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:30:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:30:12,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:30:12,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:30:12,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361804988] [2023-11-06 20:30:12,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361804988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:30:12,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:30:12,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 20:30:12,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60032020] [2023-11-06 20:30:12,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:30:12,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 20:30:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:30:12,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 20:30:12,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:30:12,857 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 25 states have internal predecessors, (37), 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) [2023-11-06 20:30:12,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:30:12,928 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2023-11-06 20:30:12,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 20:30:12,930 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 1 [2023-11-06 20:30:12,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:30:12,938 INFO L225 Difference]: With dead ends: 24 [2023-11-06 20:30:12,938 INFO L226 Difference]: Without dead ends: 24 [2023-11-06 20:30:12,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:30:12,956 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:30:12,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:30:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-06 20:30:12,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-06 20:30:12,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 23 states have internal predecessors, (35), 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) [2023-11-06 20:30:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2023-11-06 20:30:12,996 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 1 [2023-11-06 20:30:12,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:30:12,996 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2023-11-06 20:30:12,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-06 20:30:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2023-11-06 20:30:12,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 20:30:12,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:30:12,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 20:30:13,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 20:30:13,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:30:13,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 20:30:13,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:30:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash 296418, now seen corresponding path program 1 times [2023-11-06 20:30:13,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:30:13,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90630504] [2023-11-06 20:30:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:30:13,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:30:13,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:30:13,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 20:30:13,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 20:30:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 20:30:13,297 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 20:30:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 20:30:13,346 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-06 20:30:13,347 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 20:30:13,349 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-06 20:30:13,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-06 20:30:13,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-06 20:30:13,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-06 20:30:13,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-06 20:30:13,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-06 20:30:13,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-06 20:30:13,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-11-06 20:30:13,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 20:30:13,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:30:13,556 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 20:30:13,561 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 20:30:13,561 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 20:30:13,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:30:13 BasicIcfg [2023-11-06 20:30:13,579 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 20:30:13,579 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 20:30:13,579 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 20:30:13,580 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 20:30:13,580 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:30:05" (3/4) ... [2023-11-06 20:30:13,582 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 20:30:13,584 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 20:30:13,585 INFO L158 Benchmark]: Toolchain (without parser) took 8875.45ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 82.5MB in the beginning and 68.0MB in the end (delta: 14.4MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2023-11-06 20:30:13,585 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 73.4MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:30:13,586 INFO L158 Benchmark]: CACSL2BoogieTranslator took 666.00ms. Allocated memory is still 109.1MB. Free memory was 82.2MB in the beginning and 62.4MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 20:30:13,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.21ms. Allocated memory is still 109.1MB. Free memory was 62.4MB in the beginning and 60.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:30:13,588 INFO L158 Benchmark]: Boogie Preprocessor took 67.64ms. Allocated memory is still 109.1MB. Free memory was 60.3MB in the beginning and 58.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:30:13,588 INFO L158 Benchmark]: RCFGBuilder took 460.72ms. Allocated memory is still 109.1MB. Free memory was 58.7MB in the beginning and 74.3MB in the end (delta: -15.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2023-11-06 20:30:13,589 INFO L158 Benchmark]: TraceAbstraction took 7594.84ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 73.8MB in the beginning and 68.0MB in the end (delta: 5.8MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2023-11-06 20:30:13,590 INFO L158 Benchmark]: Witness Printer took 4.52ms. Allocated memory is still 132.1MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:30:13,593 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 73.4MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 666.00ms. Allocated memory is still 109.1MB. Free memory was 82.2MB in the beginning and 62.4MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.21ms. Allocated memory is still 109.1MB. Free memory was 62.4MB in the beginning and 60.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.64ms. Allocated memory is still 109.1MB. Free memory was 60.3MB in the beginning and 58.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.72ms. Allocated memory is still 109.1MB. Free memory was 58.7MB in the beginning and 74.3MB in the end (delta: -15.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7594.84ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 73.8MB in the beginning and 68.0MB in the end (delta: 5.8MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Witness Printer took 4.52ms. Allocated memory is still 132.1MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.5s, 75 PlacesBefore, 19 PlacesAfterwards, 74 TransitionsBefore, 15 TransitionsAfterwards, 464 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 83 TotalNumberOfCompositions, 803 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 583, independent: 529, independent conditional: 0, independent unconditional: 529, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 392, independent: 366, independent conditional: 0, independent unconditional: 366, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 392, independent: 355, independent conditional: 0, independent unconditional: 355, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 283, independent: 45, independent conditional: 0, independent unconditional: 45, dependent: 238, dependent conditional: 0, dependent unconditional: 238, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 583, independent: 163, independent conditional: 0, independent unconditional: 163, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 392, unknown conditional: 0, unknown unconditional: 392] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id; [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={7:0}, mutex1={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=0] [L685] 1 int t = __VERIFIER_nondet_int(); [L687] COND TRUE 1 t == 42 [L688] 1 glob1 = 1 [L690] 1 t = glob1 [L691] CALL 1 __VERIFIER_assert(!(t == 1)) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "13-privatized_18-first-reads_unknown_2_neg.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [glob1=1, mutex1={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 100 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 7.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 20:30:13,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e7ad508-72d5-4109-b4fd-b56b2fb790be/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample