./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.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_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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_c4761082-2133-4a1c-a87d-702f548adec3/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 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:07:25,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:07:25,592 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 21:07:25,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:07:25,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:07:25,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:07:25,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:07:25,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:07:25,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:07:25,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:07:25,659 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:07:25,659 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:07:25,660 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:07:25,662 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:07:25,662 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:07:25,663 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:07:25,663 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:07:25,664 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:07:25,664 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:07:25,665 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:07:25,665 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:07:25,666 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:07:25,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:07:25,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:07:25,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:07:25,669 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:07:25,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:07:25,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:07:25,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:07:25,671 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:07:25,672 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:07:25,672 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:07:25,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:07:25,673 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:07:25,673 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:07:25,673 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:07:25,674 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:07:25,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:07:25,674 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:07:25,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:25,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:07:25,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:07:25,677 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:07:25,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:07:25,677 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:07:25,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:07:25,678 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_c4761082-2133-4a1c-a87d-702f548adec3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 [2023-11-06 21:07:26,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:07:26,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:07:26,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:07:26,076 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:07:26,078 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:07:26,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-11-06 21:07:29,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:07:29,704 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:07:29,705 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-11-06 21:07:29,735 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/data/3bbd7af06/b7b9d7cfb08440f4af310f633742155b/FLAG7e1f2433b [2023-11-06 21:07:29,756 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/data/3bbd7af06/b7b9d7cfb08440f4af310f633742155b [2023-11-06 21:07:29,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:07:29,760 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:07:29,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:29,763 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:07:29,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:07:29,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1306f98c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29, skipping insertion in model container [2023-11-06 21:07:29,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,830 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:07:30,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:30,374 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:07:30,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:30,523 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:07:30,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30 WrapperNode [2023-11-06 21:07:30,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:30,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:30,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:07:30,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:07:30,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30" (1/1) ... [2023-11-06 21:07:30,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30" (1/1) ... [2023-11-06 21:07:30,582 INFO L138 Inliner]: procedures = 162, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 38 [2023-11-06 21:07:30,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:30,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:07:30,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:07:30,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:07:30,596 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30" (1/1) ... [2023-11-06 21:07:30,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30" (1/1) ... [2023-11-06 21:07:30,600 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30" (1/1) ... [2023-11-06 21:07:30,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30" (1/1) ... [2023-11-06 21:07:30,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30" (1/1) ... [2023-11-06 21:07:30,609 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30" (1/1) ... [2023-11-06 21:07:30,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30" (1/1) ... [2023-11-06 21:07:30,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30" (1/1) ... [2023-11-06 21:07:30,616 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:07:30,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:07:30,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:07:30,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:07:30,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30" (1/1) ... [2023-11-06 21:07:30,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:30,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:07:30,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:07:30,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:07:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:07:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:07:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:07:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 21:07:30,715 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 21:07:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:07:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:07:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:07:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:07:30,719 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:07:30,944 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:07:30,947 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:07:31,120 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:07:31,129 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:07:31,129 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:07:31,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:31 BoogieIcfgContainer [2023-11-06 21:07:31,132 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:07:31,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:07:31,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:07:31,141 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:07:31,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:07:29" (1/3) ... [2023-11-06 21:07:31,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae3854c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:31, skipping insertion in model container [2023-11-06 21:07:31,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:30" (2/3) ... [2023-11-06 21:07:31,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae3854c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:31, skipping insertion in model container [2023-11-06 21:07:31,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:31" (3/3) ... [2023-11-06 21:07:31,146 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-11-06 21:07:31,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:07:31,172 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-06 21:07:31,172 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:07:31,233 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:07:31,276 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 21:07:31,300 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 51 transitions, 106 flow [2023-11-06 21:07:31,304 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 51 transitions, 106 flow [2023-11-06 21:07:31,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 51 transitions, 106 flow [2023-11-06 21:07:31,349 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-06 21:07:31,349 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:07:31,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 2/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-11-06 21:07:31,356 INFO L119 LiptonReduction]: Number of co-enabled transitions 484 [2023-11-06 21:07:33,381 INFO L134 LiptonReduction]: Checked pairs total: 387 [2023-11-06 21:07:33,382 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-11-06 21:07:33,390 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 9 transitions, 22 flow [2023-11-06 21:07:33,402 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12 states, 7 states have (on average 2.0) internal successors, (14), 11 states have internal predecessors, (14), 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 21:07:33,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:07:33,428 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;@be75ab5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:07:33,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 21:07:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 2.0) internal successors, (14), 11 states have internal predecessors, (14), 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 21:07:33,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-06 21:07:33,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:33,435 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-06 21:07:33,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-06 21:07:33,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:33,441 INFO L85 PathProgramCache]: Analyzing trace with hash 219, now seen corresponding path program 1 times [2023-11-06 21:07:33,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:33,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11293575] [2023-11-06 21:07:33,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:33,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:33,570 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 21:07:33,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:33,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11293575] [2023-11-06 21:07:33,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11293575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:33,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:33,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:07:33,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580468809] [2023-11-06 21:07:33,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:33,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:07:33,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:33,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:07:33,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:07:33,609 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 2.0) internal successors, (14), 11 states have internal predecessors, (14), 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 21:07:33,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:33,633 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2023-11-06 21:07:33,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:07:33,635 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 21:07:33,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:33,644 INFO L225 Difference]: With dead ends: 10 [2023-11-06 21:07:33,644 INFO L226 Difference]: Without dead ends: 10 [2023-11-06 21:07:33,645 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 21:07:33,649 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:33,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:07:33,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-06 21:07:33,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-06 21:07:33,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 9 states have internal predecessors, (12), 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 21:07:33,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-11-06 21:07:33,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 1 [2023-11-06 21:07:33,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:33,684 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-06 21:07:33,685 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 21:07:33,685 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-11-06 21:07:33,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:07:33,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:33,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:07:33,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:07:33,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-06 21:07:33,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:33,687 INFO L85 PathProgramCache]: Analyzing trace with hash 216714, now seen corresponding path program 1 times [2023-11-06 21:07:33,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833483151] [2023-11-06 21:07:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:33,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:33,993 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 21:07:33,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:33,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833483151] [2023-11-06 21:07:33,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833483151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:33,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:33,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:07:33,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584599091] [2023-11-06 21:07:33,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:33,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:07:33,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:33,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:07:33,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:07:33,997 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 21:07:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:34,011 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2023-11-06 21:07:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:07:34,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-06 21:07:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:34,012 INFO L225 Difference]: With dead ends: 7 [2023-11-06 21:07:34,012 INFO L226 Difference]: Without dead ends: 6 [2023-11-06 21:07:34,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:07:34,015 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:34,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:07:34,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2023-11-06 21:07:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-11-06 21:07:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 21:07:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2023-11-06 21:07:34,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2023-11-06 21:07:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:34,024 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2023-11-06 21:07:34,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 21:07:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2023-11-06 21:07:34,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:07:34,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:34,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:07:34,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:07:34,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-06 21:07:34,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:34,029 INFO L85 PathProgramCache]: Analyzing trace with hash 216726, now seen corresponding path program 1 times [2023-11-06 21:07:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:34,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003926556] [2023-11-06 21:07:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:34,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:07:34,085 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:07:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:07:34,144 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-06 21:07:34,144 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:07:34,146 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2023-11-06 21:07:34,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-11-06 21:07:34,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-11-06 21:07:34,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-11-06 21:07:34,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-06 21:07:34,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-11-06 21:07:34,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:07:34,154 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 21:07:34,167 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:07:34,168 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:07:34,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:07:34 BasicIcfg [2023-11-06 21:07:34,191 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:07:34,192 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:07:34,192 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:07:34,193 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:07:34,193 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:31" (3/4) ... [2023-11-06 21:07:34,195 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 21:07:34,196 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:07:34,200 INFO L158 Benchmark]: Toolchain (without parser) took 4436.91ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 94.9MB in the beginning and 108.5MB in the end (delta: -13.6MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2023-11-06 21:07:34,208 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 69.4MB in the beginning and 69.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:34,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 761.77ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 100.3MB in the end (delta: -5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 21:07:34,208 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.77ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 99.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:34,209 INFO L158 Benchmark]: Boogie Preprocessor took 32.79ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 97.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:07:34,209 INFO L158 Benchmark]: RCFGBuilder took 515.32ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 85.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:07:34,210 INFO L158 Benchmark]: TraceAbstraction took 3054.25ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 84.9MB in the beginning and 109.5MB in the end (delta: -24.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2023-11-06 21:07:34,210 INFO L158 Benchmark]: Witness Printer took 4.36ms. Allocated memory is still 172.0MB. Free memory was 109.5MB in the beginning and 108.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:34,212 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 69.4MB in the beginning and 69.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 761.77ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 100.3MB in the end (delta: -5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.77ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 99.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.79ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 97.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 515.32ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 85.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3054.25ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 84.9MB in the beginning and 109.5MB in the end (delta: -24.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Witness Printer took 4.36ms. Allocated memory is still 172.0MB. Free memory was 109.5MB in the beginning and 108.5MB in the end (delta: 1.0MB). 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: 2.1s, 53 PlacesBefore, 13 PlacesAfterwards, 51 TransitionsBefore, 9 TransitionsAfterwards, 484 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 61 TotalNumberOfCompositions, 387 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 387, independent: 387, independent conditional: 0, independent unconditional: 387, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 316, independent: 316, independent conditional: 0, independent unconditional: 316, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 316, independent: 316, independent conditional: 0, independent unconditional: 316, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 387, independent: 71, independent conditional: 0, independent unconditional: 71, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 316, unknown conditional: 0, unknown unconditional: 316] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(x == 3) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "36-apron_41-threadenter-no-locals_unknown_1_pos.c", 3, __extension__ __PRETTY_FUNCTION__) - 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: 687]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 690]: 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, 72 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 21:07:34,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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_c4761082-2133-4a1c-a87d-702f548adec3/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 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:07:37,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:07:37,146 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 21:07:37,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:07:37,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:07:37,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:07:37,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:07:37,188 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:07:37,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:07:37,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:07:37,195 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:07:37,195 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:07:37,196 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:07:37,198 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:07:37,199 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:07:37,199 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:07:37,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:07:37,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:07:37,202 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:07:37,202 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:07:37,203 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:07:37,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:07:37,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:07:37,205 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:07:37,205 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:07:37,206 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:07:37,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:07:37,207 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:07:37,207 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:07:37,208 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:07:37,210 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:07:37,210 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:07:37,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:07:37,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:07:37,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:07:37,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:07:37,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:37,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:07:37,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:07:37,214 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 21:07:37,214 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:07:37,215 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:07:37,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:07:37,215 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_c4761082-2133-4a1c-a87d-702f548adec3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 [2023-11-06 21:07:37,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:07:37,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:07:37,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:07:37,687 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:07:37,687 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:07:37,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-11-06 21:07:40,965 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:07:41,344 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:07:41,345 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-11-06 21:07:41,377 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/data/559827447/fac0c89c1976415bb4b334fea5628834/FLAG940f27378 [2023-11-06 21:07:41,391 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/data/559827447/fac0c89c1976415bb4b334fea5628834 [2023-11-06 21:07:41,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:07:41,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:07:41,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:41,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:07:41,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:07:41,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:41" (1/1) ... [2023-11-06 21:07:41,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e409e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:41, skipping insertion in model container [2023-11-06 21:07:41,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:41" (1/1) ... [2023-11-06 21:07:41,464 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:07:41,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:41,915 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:07:42,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:42,062 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:07:42,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42 WrapperNode [2023-11-06 21:07:42,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:42,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:42,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:07:42,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:07:42,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42" (1/1) ... [2023-11-06 21:07:42,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42" (1/1) ... [2023-11-06 21:07:42,138 INFO L138 Inliner]: procedures = 165, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 38 [2023-11-06 21:07:42,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:42,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:07:42,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:07:42,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:07:42,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42" (1/1) ... [2023-11-06 21:07:42,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42" (1/1) ... [2023-11-06 21:07:42,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42" (1/1) ... [2023-11-06 21:07:42,166 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42" (1/1) ... [2023-11-06 21:07:42,173 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42" (1/1) ... [2023-11-06 21:07:42,181 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42" (1/1) ... [2023-11-06 21:07:42,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42" (1/1) ... [2023-11-06 21:07:42,185 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42" (1/1) ... [2023-11-06 21:07:42,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:07:42,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:07:42,195 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:07:42,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:07:42,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42" (1/1) ... [2023-11-06 21:07:42,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:42,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:07:42,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:07:42,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:07:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:07:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:07:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 21:07:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 21:07:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:07:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 21:07:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:07:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:07:42,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:07:42,277 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 21:07:42,433 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:07:42,435 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:07:42,659 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:07:42,669 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:07:42,670 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:07:42,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:42 BoogieIcfgContainer [2023-11-06 21:07:42,673 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:07:42,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:07:42,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:07:42,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:07:42,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:07:41" (1/3) ... [2023-11-06 21:07:42,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed7543b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:42, skipping insertion in model container [2023-11-06 21:07:42,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42" (2/3) ... [2023-11-06 21:07:42,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed7543b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:42, skipping insertion in model container [2023-11-06 21:07:42,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:42" (3/3) ... [2023-11-06 21:07:42,688 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-11-06 21:07:42,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:07:42,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-06 21:07:42,712 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:07:42,809 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:07:42,872 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 21:07:42,897 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 51 transitions, 106 flow [2023-11-06 21:07:42,905 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 51 transitions, 106 flow [2023-11-06 21:07:42,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 51 transitions, 106 flow [2023-11-06 21:07:42,955 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-06 21:07:42,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:07:42,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 2/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2023-11-06 21:07:42,961 INFO L119 LiptonReduction]: Number of co-enabled transitions 462 [2023-11-06 21:07:47,043 INFO L134 LiptonReduction]: Checked pairs total: 372 [2023-11-06 21:07:47,044 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-11-06 21:07:47,054 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 9 transitions, 22 flow [2023-11-06 21:07:47,067 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12 states, 7 states have (on average 2.0) internal successors, (14), 11 states have internal predecessors, (14), 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 21:07:47,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:07:47,099 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;@3533ca40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:07:47,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 21:07:47,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 2.0) internal successors, (14), 11 states have internal predecessors, (14), 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 21:07:47,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-06 21:07:47,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:47,110 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-06 21:07:47,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-06 21:07:47,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash 224, now seen corresponding path program 1 times [2023-11-06 21:07:47,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:47,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602201186] [2023-11-06 21:07:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:47,129 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 21:07:47,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:47,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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 21:07:47,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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 21:07:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:47,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 21:07:47,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:47,209 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 21:07:47,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:47,210 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:47,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602201186] [2023-11-06 21:07:47,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602201186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:47,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:47,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:07:47,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019210875] [2023-11-06 21:07:47,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:47,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:07:47,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:47,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:07:47,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:07:47,253 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 2.0) internal successors, (14), 11 states have internal predecessors, (14), 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 21:07:47,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:47,309 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2023-11-06 21:07:47,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:07:47,312 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 21:07:47,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:47,320 INFO L225 Difference]: With dead ends: 10 [2023-11-06 21:07:47,329 INFO L226 Difference]: Without dead ends: 10 [2023-11-06 21:07:47,331 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 21:07:47,334 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:47,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:07:47,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-06 21:07:47,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-06 21:07:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 9 states have internal predecessors, (12), 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 21:07:47,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-11-06 21:07:47,374 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 1 [2023-11-06 21:07:47,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:47,376 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-06 21:07:47,376 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 21:07:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-11-06 21:07:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:07:47,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:47,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:07:47,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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 21:07:47,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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 21:07:47,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-06 21:07:47,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:47,591 INFO L85 PathProgramCache]: Analyzing trace with hash 220531, now seen corresponding path program 1 times [2023-11-06 21:07:47,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:47,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853264212] [2023-11-06 21:07:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:47,593 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 21:07:47,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:47,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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 21:07:47,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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 21:07:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:47,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:07:47,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:47,787 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 21:07:47,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:47,788 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:47,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853264212] [2023-11-06 21:07:47,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853264212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:47,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:47,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:07:47,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544113797] [2023-11-06 21:07:47,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:47,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:07:47,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:47,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:07:47,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:07:47,794 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 21:07:47,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:47,820 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2023-11-06 21:07:47,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:07:47,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-06 21:07:47,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:47,822 INFO L225 Difference]: With dead ends: 7 [2023-11-06 21:07:47,822 INFO L226 Difference]: Without dead ends: 6 [2023-11-06 21:07:47,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:07:47,825 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:47,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:07:47,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2023-11-06 21:07:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-11-06 21:07:47,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 21:07:47,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2023-11-06 21:07:47,832 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2023-11-06 21:07:47,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:47,833 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2023-11-06 21:07:47,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 21:07:47,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2023-11-06 21:07:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:07:47,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:47,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:07:47,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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 21:07:48,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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 21:07:48,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-06 21:07:48,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:48,037 INFO L85 PathProgramCache]: Analyzing trace with hash 220538, now seen corresponding path program 1 times [2023-11-06 21:07:48,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:48,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104959604] [2023-11-06 21:07:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:48,042 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 21:07:48,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:48,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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 21:07:48,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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 (4)] Waiting until timeout for monitored process [2023-11-06 21:07:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:07:48,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:07:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:07:48,159 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-06 21:07:48,160 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:07:48,161 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2023-11-06 21:07:48,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-11-06 21:07:48,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-11-06 21:07:48,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-11-06 21:07:48,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-06 21:07:48,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-11-06 21:07:48,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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 (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:07:48,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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 21:07:48,377 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 21:07:48,384 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:07:48,384 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:07:48,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:07:48 BasicIcfg [2023-11-06 21:07:48,409 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:07:48,411 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:07:48,412 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:07:48,412 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:07:48,413 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:42" (3/4) ... [2023-11-06 21:07:48,415 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 21:07:48,416 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:07:48,427 INFO L158 Benchmark]: Toolchain (without parser) took 7021.64ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 46.3MB in the beginning and 46.9MB in the end (delta: -651.2kB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2023-11-06 21:07:48,428 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 71.3MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:48,429 INFO L158 Benchmark]: CACSL2BoogieTranslator took 665.56ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 46.1MB in the beginning and 64.7MB in the end (delta: -18.6MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2023-11-06 21:07:48,429 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.67ms. Allocated memory is still 92.3MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:07:48,430 INFO L158 Benchmark]: Boogie Preprocessor took 49.19ms. Allocated memory is still 92.3MB. Free memory was 62.6MB in the beginning and 61.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:48,430 INFO L158 Benchmark]: RCFGBuilder took 478.58ms. Allocated memory is still 92.3MB. Free memory was 61.3MB in the beginning and 49.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:07:48,431 INFO L158 Benchmark]: TraceAbstraction took 5731.86ms. Allocated memory is still 92.3MB. Free memory was 48.4MB in the beginning and 46.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2023-11-06 21:07:48,432 INFO L158 Benchmark]: Witness Printer took 5.25ms. Allocated memory is still 92.3MB. Free memory is still 46.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:07:48,434 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 71.3MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 665.56ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 46.1MB in the beginning and 64.7MB in the end (delta: -18.6MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.67ms. Allocated memory is still 92.3MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.19ms. Allocated memory is still 92.3MB. Free memory was 62.6MB in the beginning and 61.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 478.58ms. Allocated memory is still 92.3MB. Free memory was 61.3MB in the beginning and 49.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5731.86ms. Allocated memory is still 92.3MB. Free memory was 48.4MB in the beginning and 46.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. * Witness Printer took 5.25ms. Allocated memory is still 92.3MB. Free memory is still 46.9MB. 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: 4.1s, 53 PlacesBefore, 13 PlacesAfterwards, 51 TransitionsBefore, 9 TransitionsAfterwards, 462 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 372 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 372, independent: 372, independent conditional: 0, independent unconditional: 372, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 303, independent: 303, independent conditional: 0, independent unconditional: 303, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 303, independent: 303, independent conditional: 0, independent unconditional: 303, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 372, independent: 69, independent conditional: 0, independent unconditional: 69, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 303, unknown conditional: 0, unknown unconditional: 303] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=0, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(x == 3) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "36-apron_41-threadenter-no-locals_unknown_1_pos.c", 3, __extension__ __PRETTY_FUNCTION__) - 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: 687]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 690]: 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, 71 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 21:07:48,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4761082-2133-4a1c-a87d-702f548adec3/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