./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB --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 a107795e01eed1ee79fba30cb5022ee32b5d5a3711e8a094ab0bb165fd3efa7a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:00:53,120 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:00:53,195 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:00:53,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:00:53,201 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:00:53,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:00:53,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:00:53,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:00:53,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:00:53,227 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:00:53,227 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:00:53,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:00:53,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:00:53,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:00:53,228 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:00:53,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:00:53,229 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:00:53,229 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:00:53,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:00:53,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:00:53,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:00:53,229 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:00:53,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:00:53,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:00:53,229 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:00:53,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:00:53,230 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:00:53,230 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:00:53,230 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:00:53,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:00:53,230 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:00:53,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:00:53,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:00:53,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:00:53,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:00:53,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:00:53,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:00:53,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:00:53,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:00:53,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:00:53,232 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:00:53,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:00:53,232 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:00:53,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:00:53,233 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:00:53,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:00:53,233 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:00:53,233 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:00:53,233 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB 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 -> a107795e01eed1ee79fba30cb5022ee32b5d5a3711e8a094ab0bb165fd3efa7a [2024-11-28 03:00:53,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:00:53,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:00:53,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:00:53,560 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:00:53,560 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:00:53,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2024-11-28 03:00:56,486 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/data/e9381d755/c13166ec149a43bd9e7cc25117095000/FLAG82a527d47 [2024-11-28 03:00:56,840 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:00:56,842 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2024-11-28 03:00:56,854 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/data/e9381d755/c13166ec149a43bd9e7cc25117095000/FLAG82a527d47 [2024-11-28 03:00:56,878 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/data/e9381d755/c13166ec149a43bd9e7cc25117095000 [2024-11-28 03:00:56,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:00:56,884 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:00:56,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:00:56,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:00:56,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:00:56,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:56" (1/1) ... [2024-11-28 03:00:56,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad5865b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:56, skipping insertion in model container [2024-11-28 03:00:56,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:56" (1/1) ... [2024-11-28 03:00:56,913 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:00:57,142 WARN L250 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_aea81649-75b5-43e5-b5a4-d6fb895e1c81/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c[3922,3935] [2024-11-28 03:00:57,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:00:57,158 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:00:57,184 WARN L250 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_aea81649-75b5-43e5-b5a4-d6fb895e1c81/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c[3922,3935] [2024-11-28 03:00:57,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:00:57,201 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:00:57,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57 WrapperNode [2024-11-28 03:00:57,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:00:57,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:00:57,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:00:57,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:00:57,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,242 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 223 [2024-11-28 03:00:57,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:00:57,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:00:57,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:00:57,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:00:57,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,269 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:00:57,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,278 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,279 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:00:57,294 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:00:57,294 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:00:57,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:00:57,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (1/1) ... [2024-11-28 03:00:57,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:00:57,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:57,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:00:57,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea81649-75b5-43e5-b5a4-d6fb895e1c81/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:00:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:00:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 03:00:57,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 03:00:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 03:00:57,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 03:00:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 03:00:57,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 03:00:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-28 03:00:57,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-28 03:00:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:00:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-28 03:00:57,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-28 03:00:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-28 03:00:57,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-28 03:00:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:00:57,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:00:57,371 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:00:57,516 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:00:57,518 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:00:57,935 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:00:57,936 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:00:58,257 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:00:58,257 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 03:00:58,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:58 BoogieIcfgContainer [2024-11-28 03:00:58,258 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:00:58,261 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:00:58,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:00:58,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:00:58,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:56" (1/3) ... [2024-11-28 03:00:58,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1961bc8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:58, skipping insertion in model container [2024-11-28 03:00:58,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:57" (2/3) ... [2024-11-28 03:00:58,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1961bc8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:58, skipping insertion in model container [2024-11-28 03:00:58,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:58" (3/3) ... [2024-11-28 03:00:58,271 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-barrier-loop.wvr.c [2024-11-28 03:00:58,289 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:00:58,290 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-barrier-loop.wvr.c that has 7 procedures, 95 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 03:00:58,291 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:00:58,410 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-11-28 03:00:58,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 112 transitions, 290 flow [2024-11-28 03:00:58,542 INFO L124 PetriNetUnfolderBase]: 12/100 cut-off events. [2024-11-28 03:00:58,545 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 03:00:58,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 100 events. 12/100 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 234 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 3 conditions per place. [2024-11-28 03:00:58,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 112 transitions, 290 flow [2024-11-28 03:00:58,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 99 transitions, 246 flow [2024-11-28 03:00:58,575 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:00:58,591 INFO L333 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, 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;@4953fec9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:00:58,591 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-28 03:00:58,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:00:58,647 INFO L124 PetriNetUnfolderBase]: 12/98 cut-off events. [2024-11-28 03:00:58,647 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 03:00:58,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:58,648 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:58,648 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-28 03:00:58,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:58,657 INFO L85 PathProgramCache]: Analyzing trace with hash -792962531, now seen corresponding path program 1 times [2024-11-28 03:00:58,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:58,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749363909] [2024-11-28 03:00:58,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:58,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:58,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:58,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749363909] [2024-11-28 03:00:58,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749363909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:58,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:58,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:00:58,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135157537] [2024-11-28 03:00:58,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:58,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:00:58,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:58,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:00:58,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:00:58,983 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 116 [2024-11-28 03:00:58,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 99 transitions, 246 flow. Second operand has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 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) [2024-11-28 03:00:58,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:58,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 116 [2024-11-28 03:00:58,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:01:14,291 INFO L124 PetriNetUnfolderBase]: 133137/181937 cut-off events. [2024-11-28 03:01:14,292 INFO L125 PetriNetUnfolderBase]: For 14091/14091 co-relation queries the response was YES. [2024-11-28 03:01:14,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362224 conditions, 181937 events. 133137/181937 cut-off events. For 14091/14091 co-relation queries the response was YES. Maximal size of possible extension queue 5926. Compared 1304789 event pairs, 113708 based on Foata normal form. 0/155821 useless extension candidates. Maximal degree in co-relation 361176. Up to 164047 conditions per place. [2024-11-28 03:01:15,410 INFO L140 encePairwiseOnDemand]: 112/116 looper letters, 62 selfloop transitions, 0 changer transitions 0/95 dead transitions. [2024-11-28 03:01:15,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 362 flow [2024-11-28 03:01:15,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:01:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:01:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 144 transitions. [2024-11-28 03:01:15,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-11-28 03:01:15,426 INFO L175 Difference]: Start difference. First operand has 106 places, 99 transitions, 246 flow. Second operand 2 states and 144 transitions. [2024-11-28 03:01:15,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 362 flow [2024-11-28 03:01:15,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 330 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-28 03:01:15,989 INFO L231 Difference]: Finished difference. Result has 95 places, 95 transitions, 206 flow [2024-11-28 03:01:15,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=95, PETRI_TRANSITIONS=95} [2024-11-28 03:01:15,998 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -11 predicate places. [2024-11-28 03:01:16,001 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 95 transitions, 206 flow [2024-11-28 03:01:16,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 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) [2024-11-28 03:01:16,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:01:16,002 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:16,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:01:16,002 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-28 03:01:16,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:16,003 INFO L85 PathProgramCache]: Analyzing trace with hash 658554535, now seen corresponding path program 1 times [2024-11-28 03:01:16,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:16,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891579596] [2024-11-28 03:01:16,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:16,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:01:16,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:16,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891579596] [2024-11-28 03:01:16,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891579596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:16,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:16,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:01:16,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483570472] [2024-11-28 03:01:16,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:16,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:01:16,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:16,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:01:16,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:01:16,624 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 116 [2024-11-28 03:01:16,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-11-28 03:01:16,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:01:16,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 116 [2024-11-28 03:01:16,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand