./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 cf1a7837 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_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.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_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl --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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:05:31,820 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:05:31,937 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:05:31,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:05:31,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:05:31,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:05:31,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:05:31,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:05:31,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:05:31,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:05:31,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:05:31,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:05:31,992 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:05:31,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:05:31,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:05:31,995 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:05:31,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:05:31,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:05:31,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:05:31,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:05:31,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:05:31,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:05:31,998 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:05:31,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:05:31,999 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:05:32,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:05:32,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:05:32,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:05:32,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:05:32,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:05:32,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:05:32,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:05:32,004 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:05:32,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:05:32,004 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:05:32,005 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:05:32,005 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:05:32,005 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:05:32,005 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:05:32,006 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_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2023-11-12 02:05:32,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:05:32,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:05:32,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:05:32,403 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:05:32,403 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:05:32,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2023-11-12 02:05:35,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:05:35,775 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:05:35,776 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2023-11-12 02:05:35,801 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/data/00d6b045b/17d09c7e1472495fab20e3b894cdc6ec/FLAG206cb4fac [2023-11-12 02:05:35,819 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/data/00d6b045b/17d09c7e1472495fab20e3b894cdc6ec [2023-11-12 02:05:35,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:05:35,828 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:05:35,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:05:35,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:05:35,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:05:35,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:05:35" (1/1) ... [2023-11-12 02:05:35,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@319afc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:35, skipping insertion in model container [2023-11-12 02:05:35,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:05:35" (1/1) ... [2023-11-12 02:05:35,930 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:05:36,385 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_a33738a8-b532-4b07-afd1-947f2d0861f0/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-11-12 02:05:36,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:05:36,443 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:05:36,496 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_a33738a8-b532-4b07-afd1-947f2d0861f0/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-11-12 02:05:36,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:05:36,594 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:05:36,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36 WrapperNode [2023-11-12 02:05:36,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:05:36,596 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:05:36,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:05:36,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:05:36,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36" (1/1) ... [2023-11-12 02:05:36,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36" (1/1) ... [2023-11-12 02:05:36,677 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 209 [2023-11-12 02:05:36,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:05:36,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:05:36,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:05:36,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:05:36,691 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36" (1/1) ... [2023-11-12 02:05:36,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36" (1/1) ... [2023-11-12 02:05:36,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36" (1/1) ... [2023-11-12 02:05:36,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36" (1/1) ... [2023-11-12 02:05:36,709 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36" (1/1) ... [2023-11-12 02:05:36,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36" (1/1) ... [2023-11-12 02:05:36,718 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36" (1/1) ... [2023-11-12 02:05:36,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36" (1/1) ... [2023-11-12 02:05:36,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:05:36,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:05:36,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:05:36,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:05:36,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36" (1/1) ... [2023-11-12 02:05:36,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:05:36,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:05:36,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:05:36,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:05:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:05:36,850 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-12 02:05:36,850 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-12 02:05:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:05:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:05:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-12 02:05:36,852 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-12 02:05:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:05:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:05:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:05:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:05:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:05:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:05:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:05:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:05:36,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33738a8-b532-4b07-afd1-947f2d0861f0/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:05:36,860 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:05:37,058 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:05:37,060 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:05:37,506 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:05:37,516 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:05:37,516 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-12 02:05:37,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:05:37 BoogieIcfgContainer [2023-11-12 02:05:37,519 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:05:37,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:05:37,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:05:37,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:05:37,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:05:35" (1/3) ... [2023-11-12 02:05:37,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c81758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:05:37, skipping insertion in model container [2023-11-12 02:05:37,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:36" (2/3) ... [2023-11-12 02:05:37,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c81758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:05:37, skipping insertion in model container [2023-11-12 02:05:37,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:05:37" (3/3) ... [2023-11-12 02:05:37,528 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-11-12 02:05:37,537 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:05:37,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:05:37,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:05:37,548 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:05:37,708 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 02:05:37,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 223 transitions, 466 flow [2023-11-12 02:05:37,920 INFO L124 PetriNetUnfolderBase]: 52/429 cut-off events. [2023-11-12 02:05:37,920 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-12 02:05:37,934 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. [2023-11-12 02:05:37,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 223 transitions, 466 flow [2023-11-12 02:05:37,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 221 transitions, 456 flow [2023-11-12 02:05:37,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:05:37,972 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 221 transitions, 456 flow [2023-11-12 02:05:37,977 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 221 transitions, 456 flow [2023-11-12 02:05:37,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 221 transitions, 456 flow [2023-11-12 02:05:38,101 INFO L124 PetriNetUnfolderBase]: 48/417 cut-off events. [2023-11-12 02:05:38,102 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:05:38,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 417 events. 48/417 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1658 event pairs, 0 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 206. Up to 8 conditions per place. [2023-11-12 02:05:38,124 INFO L119 LiptonReduction]: Number of co-enabled transitions 15106 [2023-11-12 02:05:46,599 INFO L134 LiptonReduction]: Checked pairs total: 23608 [2023-11-12 02:05:46,599 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-11-12 02:05:46,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:05:46,621 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;@5c2e927e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:05:46,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-12 02:05:46,630 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:05:46,630 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2023-11-12 02:05:46,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:05:46,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:05:46,631 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 02:05:46,632 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)] === [2023-11-12 02:05:46,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:46,637 INFO L85 PathProgramCache]: Analyzing trace with hash -18310139, now seen corresponding path program 1 times [2023-11-12 02:05:46,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:46,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214725778] [2023-11-12 02:05:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:46,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:05:46,793 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:05:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:05:46,875 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:05:46,877 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:05:46,879 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-12 02:05:46,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-12 02:05:46,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-12 02:05:46,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-12 02:05:46,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:05:46,883 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 02:05:46,893 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:05:46,893 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:05:46,993 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-12 02:05:47,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 345 transitions, 734 flow [2023-11-12 02:05:47,365 INFO L124 PetriNetUnfolderBase]: 191/1272 cut-off events. [2023-11-12 02:05:47,366 INFO L125 PetriNetUnfolderBase]: For 72/83 co-relation queries the response was YES. [2023-11-12 02:05:47,393 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 8068 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. [2023-11-12 02:05:47,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 345 transitions, 734 flow [2023-11-12 02:05:47,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 345 transitions, 734 flow [2023-11-12 02:05:47,410 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:05:47,410 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 345 transitions, 734 flow [2023-11-12 02:05:47,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 345 transitions, 734 flow [2023-11-12 02:05:47,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 345 transitions, 734 flow [2023-11-12 02:05:47,717 INFO L124 PetriNetUnfolderBase]: 191/1272 cut-off events. [2023-11-12 02:05:47,717 INFO L125 PetriNetUnfolderBase]: For 72/83 co-relation queries the response was YES. [2023-11-12 02:05:47,743 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 8068 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. [2023-11-12 02:05:47,822 INFO L119 LiptonReduction]: Number of co-enabled transitions 60400 [2023-11-12 02:05:57,881 INFO L134 LiptonReduction]: Checked pairs total: 108069 [2023-11-12 02:05:57,881 INFO L136 LiptonReduction]: Total number of compositions: 274 [2023-11-12 02:05:57,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:05:57,886 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;@5c2e927e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:05:57,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-12 02:05:57,894 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:05:57,894 INFO L124 PetriNetUnfolderBase]: 8/60 cut-off events. [2023-11-12 02:05:57,894 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:05:57,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:05:57,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:57,895 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)] === [2023-11-12 02:05:57,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:57,896 INFO L85 PathProgramCache]: Analyzing trace with hash -617614522, now seen corresponding path program 1 times [2023-11-12 02:05:57,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:57,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000166633] [2023-11-12 02:05:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:57,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:05:58,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:58,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000166633] [2023-11-12 02:05:58,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000166633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:58,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:58,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:05:58,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638309087] [2023-11-12 02:05:58,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:58,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:05:58,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:58,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:05:58,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:05:58,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 619 [2023-11-12 02:05:58,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 114 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 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) [2023-11-12 02:05:58,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:05:58,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 619 [2023-11-12 02:05:58,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand