./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:53:51,384 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:53:51,521 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:53:51,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:53:51,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:53:51,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:53:51,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:53:51,575 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:53:51,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:53:51,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:53:51,582 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:53:51,583 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:53:51,584 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:53:51,586 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:53:51,586 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:53:51,586 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:53:51,587 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:53:51,587 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:53:51,588 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:53:51,588 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:53:51,589 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:53:51,589 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:53:51,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:53:51,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:53:51,591 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:53:51,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:53:51,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:53:51,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:53:51,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:53:51,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:53:51,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:53:51,620 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:53:51,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:53:51,620 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:53:51,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:53:51,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:53:51,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:51,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:53:51,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:53:51,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:53:51,623 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:53:51,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:53:51,623 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:53:51,624 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:53:51,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:53:51,624 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_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2023-11-19 04:53:51,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:53:52,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:53:52,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:53:52,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:53:52,024 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:53:52,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2023-11-19 04:53:55,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:53:55,586 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:53:55,586 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2023-11-19 04:53:55,620 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/data/59883da1a/9ecbabe91c19444c9f2573325d8eb355/FLAG479a9c0d6 [2023-11-19 04:53:55,641 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/data/59883da1a/9ecbabe91c19444c9f2573325d8eb355 [2023-11-19 04:53:55,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:53:55,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:53:55,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:55,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:53:55,657 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:53:55,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57853d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55, skipping insertion in model container [2023-11-19 04:53:55,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,746 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:53:56,351 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-11-19 04:53:56,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:56,413 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:53:56,516 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-11-19 04:53:56,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:56,651 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:53:56,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56 WrapperNode [2023-11-19 04:53:56,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:56,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:56,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:53:56,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:53:56,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,693 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,733 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 209 [2023-11-19 04:53:56,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:56,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:53:56,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:53:56,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:53:56,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,770 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,794 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:53:56,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:53:56,812 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:53:56,812 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:53:56,814 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:53:56,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:53:56,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfa89cd-676a-4017-9a47-b1991decdd88/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:53:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:53:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:53:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-19 04:53:56,912 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-19 04:53:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:53:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:53:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-19 04:53:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-19 04:53:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:53:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 04:53:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:53:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:53:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:53:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:53:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:53:56,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:53:56,920 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:53:57,215 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:53:57,218 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:53:57,765 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:53:57,789 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:53:57,789 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-19 04:53:57,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:57 BoogieIcfgContainer [2023-11-19 04:53:57,799 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:53:57,802 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:53:57,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:53:57,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:53:57,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:53:55" (1/3) ... [2023-11-19 04:53:57,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d16bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:57, skipping insertion in model container [2023-11-19 04:53:57,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (2/3) ... [2023-11-19 04:53:57,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d16bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:57, skipping insertion in model container [2023-11-19 04:53:57,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:57" (3/3) ... [2023-11-19 04:53:57,811 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-11-19 04:53:57,822 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 04:53:57,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:53:57,833 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:53:57,833 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:53:57,970 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 04:53:58,018 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:53:58,037 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 223 transitions, 466 flow [2023-11-19 04:53:58,041 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 223 transitions, 466 flow [2023-11-19 04:53:58,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 223 transitions, 466 flow [2023-11-19 04:53:58,244 INFO L124 PetriNetUnfolderBase]: 52/429 cut-off events. [2023-11-19 04:53:58,245 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 04:53:58,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 429 events. 52/429 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1752 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 218. Up to 8 conditions per place. [2023-11-19 04:53:58,280 INFO L119 LiptonReduction]: Number of co-enabled transitions 15646 [2023-11-19 04:54:36,711 INFO L134 LiptonReduction]: Checked pairs total: 26336 [2023-11-19 04:54:36,712 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-11-19 04:54:36,723 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 64 transitions, 148 flow [2023-11-19 04:54:36,928 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2075 states, 2066 states have (on average 3.249757986447241) internal successors, (6714), 2074 states have internal predecessors, (6714), 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) [2023-11-19 04:54:36,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:54:36,974 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@9ae612d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:54:36,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 04:54:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 2075 states, 2066 states have (on average 3.249757986447241) internal successors, (6714), 2074 states have internal predecessors, (6714), 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) [2023-11-19 04:54:36,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:54:36,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:36,993 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 04:54:36,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 04:54:37,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:37,001 INFO L85 PathProgramCache]: Analyzing trace with hash 135919201, now seen corresponding path program 1 times [2023-11-19 04:54:37,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:37,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631265469] [2023-11-19 04:54:37,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:37,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:54:37,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:54:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:54:37,264 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:54:37,267 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:54:37,268 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-19 04:54:37,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-19 04:54:37,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-19 04:54:37,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-19 04:54:37,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:54:37,276 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:54:37,279 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 04:54:37,280 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 04:54:37,377 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-19 04:54:37,399 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:54:37,399 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 345 transitions, 734 flow [2023-11-19 04:54:37,400 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 345 transitions, 734 flow [2023-11-19 04:54:37,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 345 transitions, 734 flow [2023-11-19 04:54:37,851 INFO L124 PetriNetUnfolderBase]: 191/1272 cut-off events. [2023-11-19 04:54:37,852 INFO L125 PetriNetUnfolderBase]: For 72/83 co-relation queries the response was YES. [2023-11-19 04:54:37,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1361 conditions, 1272 events. 191/1272 cut-off events. For 72/83 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8009 event pairs, 2 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 794. Up to 32 conditions per place. [2023-11-19 04:54:37,985 INFO L119 LiptonReduction]: Number of co-enabled transitions 60400