./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.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_51ddb6a6-87f5-490c-bd88-63878c946680/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddb6a6-87f5-490c-bd88-63878c946680/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_51ddb6a6-87f5-490c-bd88-63878c946680/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddb6a6-87f5-490c-bd88-63878c946680/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddb6a6-87f5-490c-bd88-63878c946680/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_51ddb6a6-87f5-490c-bd88-63878c946680/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 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:41,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:41,895 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddb6a6-87f5-490c-bd88-63878c946680/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:35:41,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:41,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:41,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:41,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:41,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:41,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:41,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:41,932 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:41,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:41,933 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:41,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:41,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:35:41,935 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:41,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:41,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:41,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:41,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:35:41,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:41,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:35:41,938 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:41,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:35:41,939 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:41,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:41,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:41,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:41,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:41,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:41,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:41,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:35:41,942 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:41,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:41,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:41,943 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:35:41,943 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:41,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:41,943 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:41,944 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_51ddb6a6-87f5-490c-bd88-63878c946680/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddb6a6-87f5-490c-bd88-63878c946680/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2023-11-19 07:35:42,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:42,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:42,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:42,223 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:42,224 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:42,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddb6a6-87f5-490c-bd88-63878c946680/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-19 07:35:45,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:45,754 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:45,755 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddb6a6-87f5-490c-bd88-63878c946680/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-19 07:35:45,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddb6a6-87f5-490c-bd88-63878c946680/bin/uautomizer-verify-uCwYo4JHxu/data/74423f2a2/f437f1e427074bf090af249321df97ac/FLAG320430fe5 [2023-11-19 07:35:45,801 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddb6a6-87f5-490c-bd88-63878c946680/bin/uautomizer-verify-uCwYo4JHxu/data/74423f2a2/f437f1e427074bf090af249321df97ac [2023-11-19 07:35:45,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:45,810 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:45,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:45,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:45,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:45,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:45" (1/1) ... [2023-11-19 07:35:45,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e4026f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:45, skipping insertion in model container [2023-11-19 07:35:45,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:45" (1/1) ... [2023-11-19 07:35:45,894 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:46,480 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_51ddb6a6-87f5-490c-bd88-63878c946680/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2023-11-19 07:35:46,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:46,546 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:46,594 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_51ddb6a6-87f5-490c-bd88-63878c946680/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2023-11-19 07:35:46,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:46,701 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:46,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46 WrapperNode [2023-11-19 07:35:46,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:46,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:46,703 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:46,704 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:46,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46" (1/1) ... [2023-11-19 07:35:46,734 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46" (1/1) ... [2023-11-19 07:35:46,770 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 211 [2023-11-19 07:35:46,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:46,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:46,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:46,772 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:46,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46" (1/1) ... [2023-11-19 07:35:46,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46" (1/1) ... [2023-11-19 07:35:46,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46" (1/1) ... [2023-11-19 07:35:46,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46" (1/1) ... [2023-11-19 07:35:46,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46" (1/1) ... [2023-11-19 07:35:46,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46" (1/1) ... [2023-11-19 07:35:46,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46" (1/1) ... [2023-11-19 07:35:46,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46" (1/1) ... [2023-11-19 07:35:46,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:46,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:46,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:46,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:46,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46" (1/1) ... [2023-11-19 07:35:46,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:46,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddb6a6-87f5-490c-bd88-63878c946680/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:46,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddb6a6-87f5-490c-bd88-63878c946680/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:46,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddb6a6-87f5-490c-bd88-63878c946680/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:35:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:35:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-19 07:35:46,916 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-19 07:35:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:35:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:35:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-19 07:35:46,916 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-19 07:35:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:35:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:35:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:35:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:35:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:46,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:46,919 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 07:35:47,094 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:47,097 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:47,621 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:47,638 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:47,639 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-19 07:35:47,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:47 BoogieIcfgContainer [2023-11-19 07:35:47,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:47,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:47,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:47,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:47,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:45" (1/3) ... [2023-11-19 07:35:47,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cac0c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:47, skipping insertion in model container [2023-11-19 07:35:47,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:46" (2/3) ... [2023-11-19 07:35:47,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cac0c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:47, skipping insertion in model container [2023-11-19 07:35:47,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:47" (3/3) ... [2023-11-19 07:35:47,657 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-11-19 07:35:47,679 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:35:47,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:47,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:35:47,692 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:35:47,826 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:35:47,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 223 transitions, 466 flow [2023-11-19 07:35:48,084 INFO L124 PetriNetUnfolderBase]: 52/432 cut-off events. [2023-11-19 07:35:48,085 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:35:48,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 432 events. 52/432 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1773 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 218. Up to 8 conditions per place. [2023-11-19 07:35:48,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 223 transitions, 466 flow [2023-11-19 07:35:48,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 221 transitions, 456 flow [2023-11-19 07:35:48,127 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:48,149 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 221 transitions, 456 flow [2023-11-19 07:35:48,162 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 221 transitions, 456 flow [2023-11-19 07:35:48,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 221 transitions, 456 flow [2023-11-19 07:35:48,292 INFO L124 PetriNetUnfolderBase]: 48/420 cut-off events. [2023-11-19 07:35:48,292 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:35:48,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 420 events. 48/420 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1695 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 206. Up to 8 conditions per place. [2023-11-19 07:35:48,319 INFO L119 LiptonReduction]: Number of co-enabled transitions 15526 [2023-11-19 07:35:57,129 INFO L134 LiptonReduction]: Checked pairs total: 24466 [2023-11-19 07:35:57,130 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-11-19 07:35:57,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:57,176 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;@7213b693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:57,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:35:57,184 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:57,184 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2023-11-19 07:35:57,185 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:57,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:57,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:35:57,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:35:57,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:57,192 INFO L85 PathProgramCache]: Analyzing trace with hash 36263039, now seen corresponding path program 1 times [2023-11-19 07:35:57,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:57,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606618703] [2023-11-19 07:35:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:57,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:35:57,435 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:35:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:35:57,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:35:57,514 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:35:57,516 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-19 07:35:57,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-19 07:35:57,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-19 07:35:57,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-19 07:35:57,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:35:57,521 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 07:35:57,527 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:35:57,527 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:35:57,598 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-19 07:35:57,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 348 transitions, 740 flow [2023-11-19 07:35:58,027 INFO L124 PetriNetUnfolderBase]: 191/1287 cut-off events. [2023-11-19 07:35:58,027 INFO L125 PetriNetUnfolderBase]: For 72/86 co-relation queries the response was YES. [2023-11-19 07:35:58,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 1287 events. 191/1287 cut-off events. For 72/86 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8156 event pairs, 1 based on Foata normal form. 0/1095 useless extension candidates. Maximal degree in co-relation 803. Up to 32 conditions per place. [2023-11-19 07:35:58,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 348 transitions, 740 flow [2023-11-19 07:35:58,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 348 transitions, 740 flow [2023-11-19 07:35:58,071 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:58,071 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 348 transitions, 740 flow [2023-11-19 07:35:58,071 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 348 transitions, 740 flow [2023-11-19 07:35:58,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 348 transitions, 740 flow [2023-11-19 07:35:58,450 INFO L124 PetriNetUnfolderBase]: 191/1287 cut-off events. [2023-11-19 07:35:58,453 INFO L125 PetriNetUnfolderBase]: For 72/86 co-relation queries the response was YES. [2023-11-19 07:35:58,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 1287 events. 191/1287 cut-off events. For 72/86 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8156 event pairs, 1 based on Foata normal form. 0/1095 useless extension candidates. Maximal degree in co-relation 803. Up to 32 conditions per place. [2023-11-19 07:35:58,559 INFO L119 LiptonReduction]: Number of co-enabled transitions 62704 [2023-11-19 07:36:10,173 INFO L134 LiptonReduction]: Checked pairs total: 121815 [2023-11-19 07:36:10,173 INFO L136 LiptonReduction]: Total number of compositions: 271 [2023-11-19 07:36:10,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:10,178 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;@7213b693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:10,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:36:10,195 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:10,196 INFO L124 PetriNetUnfolderBase]: 11/81 cut-off events. [2023-11-19 07:36:10,196 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2023-11-19 07:36:10,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:10,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:10,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 07:36:10,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:10,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1833713262, now seen corresponding path program 1 times [2023-11-19 07:36:10,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:10,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999057344] [2023-11-19 07:36:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:10,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:10,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:10,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999057344] [2023-11-19 07:36:10,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999057344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:10,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:10,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:10,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233183087] [2023-11-19 07:36:10,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:10,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:10,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:10,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:10,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:10,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 619 [2023-11-19 07:36:10,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 116 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 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 07:36:10,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:10,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 619 [2023-11-19 07:36:10,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand