./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:52,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:52,616 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:49:52,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:52,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:52,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:52,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:52,650 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:52,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:52,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:52,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:52,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:52,654 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:52,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:52,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:49:52,656 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:52,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:52,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:52,658 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:52,658 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:49:52,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:52,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:49:52,660 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:52,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:49:52,661 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:52,662 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:52,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:52,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:52,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:52,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:52,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:52,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:49:52,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:52,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:49:52,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:52,667 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:49:52,667 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:52,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:52,668 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:52,668 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b [2023-11-19 07:49:52,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:52,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:52,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:52,987 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:52,988 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:52,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i [2023-11-19 07:49:56,035 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:56,364 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:56,365 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i [2023-11-19 07:49:56,386 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/data/6e4094fac/cbdc3323de994644b5d5e9e98d1ac6ab/FLAG59a7d38dd [2023-11-19 07:49:56,402 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/data/6e4094fac/cbdc3323de994644b5d5e9e98d1ac6ab [2023-11-19 07:49:56,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:56,407 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:56,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:56,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:56,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:56,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:56" (1/1) ... [2023-11-19 07:49:56,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29aab1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:56, skipping insertion in model container [2023-11-19 07:49:56,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:56" (1/1) ... [2023-11-19 07:49:56,472 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:57,084 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_ac833874-9f70-407d-8110-78b5187a2056/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i[47038,47051] [2023-11-19 07:49:57,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:57,178 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:49:57,227 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_ac833874-9f70-407d-8110-78b5187a2056/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i[47038,47051] [2023-11-19 07:49:57,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:57,357 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:49:57,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57 WrapperNode [2023-11-19 07:49:57,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:57,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:57,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:49:57,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:49:57,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57" (1/1) ... [2023-11-19 07:49:57,389 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57" (1/1) ... [2023-11-19 07:49:57,429 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 349 [2023-11-19 07:49:57,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:57,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:49:57,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:49:57,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:49:57,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57" (1/1) ... [2023-11-19 07:49:57,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57" (1/1) ... [2023-11-19 07:49:57,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57" (1/1) ... [2023-11-19 07:49:57,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57" (1/1) ... [2023-11-19 07:49:57,481 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57" (1/1) ... [2023-11-19 07:49:57,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57" (1/1) ... [2023-11-19 07:49:57,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57" (1/1) ... [2023-11-19 07:49:57,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57" (1/1) ... [2023-11-19 07:49:57,507 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:49:57,508 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:49:57,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:49:57,508 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:49:57,512 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57" (1/1) ... [2023-11-19 07:49:57,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:57,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:57,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:49:57,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac833874-9f70-407d-8110-78b5187a2056/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:49:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:49:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:49:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-19 07:49:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-19 07:49:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:49:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:49:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-19 07:49:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-19 07:49:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:49:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:49:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:49:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:49:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:49:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-11-19 07:49:57,597 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-11-19 07:49:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:49:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:49:57,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:49:57,599 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:49:57,862 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:49:57,863 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:58,404 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:58,418 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:58,418 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-11-19 07:49:58,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:58 BoogieIcfgContainer [2023-11-19 07:49:58,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:58,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:49:58,427 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:49:58,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:49:58,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:56" (1/3) ... [2023-11-19 07:49:58,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642c0359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:58, skipping insertion in model container [2023-11-19 07:49:58,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:57" (2/3) ... [2023-11-19 07:49:58,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642c0359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:58, skipping insertion in model container [2023-11-19 07:49:58,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:58" (3/3) ... [2023-11-19 07:49:58,433 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2023-11-19 07:49:58,442 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:49:58,449 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:49:58,450 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:49:58,450 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:49:58,641 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-11-19 07:49:58,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 370 transitions, 779 flow [2023-11-19 07:49:59,135 INFO L124 PetriNetUnfolderBase]: 164/1146 cut-off events. [2023-11-19 07:49:59,136 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-19 07:49:59,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 1146 events. 164/1146 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7335 event pairs, 0 based on Foata normal form. 0/971 useless extension candidates. Maximal degree in co-relation 590. Up to 16 conditions per place. [2023-11-19 07:49:59,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 370 transitions, 779 flow [2023-11-19 07:49:59,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 370 transitions, 779 flow [2023-11-19 07:49:59,196 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:49:59,213 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 370 transitions, 779 flow [2023-11-19 07:49:59,217 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 370 transitions, 779 flow [2023-11-19 07:49:59,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 370 transitions, 779 flow [2023-11-19 07:49:59,495 INFO L124 PetriNetUnfolderBase]: 164/1146 cut-off events. [2023-11-19 07:49:59,495 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-19 07:49:59,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 1146 events. 164/1146 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7335 event pairs, 0 based on Foata normal form. 0/971 useless extension candidates. Maximal degree in co-relation 590. Up to 16 conditions per place. [2023-11-19 07:49:59,587 INFO L119 LiptonReduction]: Number of co-enabled transitions 58634 [2023-11-19 07:50:18,789 INFO L134 LiptonReduction]: Checked pairs total: 107929 [2023-11-19 07:50:18,790 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-11-19 07:50:18,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:18,814 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=PETRI_NET, 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;@1a0dccaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:18,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:50:18,821 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:50:18,821 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-19 07:50:18,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:50:18,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:18,822 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:50:18,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:50:18,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:18,828 INFO L85 PathProgramCache]: Analyzing trace with hash 82183034, now seen corresponding path program 1 times [2023-11-19 07:50:18,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:18,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793423224] [2023-11-19 07:50:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:18,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:50:19,078 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:50:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:50:19,157 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:50:19,159 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:50:19,161 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-19 07:50:19,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-19 07:50:19,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-11-19 07:50:19,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-19 07:50:19,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-19 07:50:19,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-19 07:50:19,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-19 07:50:19,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:50:19,166 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 07:50:19,170 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:50:19,171 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:50:19,305 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-19 07:50:19,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 526 places, 597 transitions, 1278 flow [2023-11-19 07:50:23,377 INFO L124 PetriNetUnfolderBase]: 1130/5883 cut-off events. [2023-11-19 07:50:23,378 INFO L125 PetriNetUnfolderBase]: For 602/654 co-relation queries the response was YES. [2023-11-19 07:50:23,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6531 conditions, 5883 events. 1130/5883 cut-off events. For 602/654 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 54908 event pairs, 22 based on Foata normal form. 0/5022 useless extension candidates. Maximal degree in co-relation 3647. Up to 192 conditions per place. [2023-11-19 07:50:23,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 526 places, 597 transitions, 1278 flow [2023-11-19 07:50:23,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 526 places, 597 transitions, 1278 flow [2023-11-19 07:50:23,793 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:50:23,794 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 526 places, 597 transitions, 1278 flow [2023-11-19 07:50:23,794 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 526 places, 597 transitions, 1278 flow [2023-11-19 07:50:23,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 526 places, 597 transitions, 1278 flow [2023-11-19 07:50:26,672 INFO L124 PetriNetUnfolderBase]: 1130/5883 cut-off events. [2023-11-19 07:50:26,673 INFO L125 PetriNetUnfolderBase]: For 602/654 co-relation queries the response was YES. [2023-11-19 07:50:26,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6531 conditions, 5883 events. 1130/5883 cut-off events. For 602/654 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 54908 event pairs, 22 based on Foata normal form. 0/5022 useless extension candidates. Maximal degree in co-relation 3647. Up to 192 conditions per place. [2023-11-19 07:50:27,568 INFO L119 LiptonReduction]: Number of co-enabled transitions 218504