./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX --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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:09:08,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:09:08,790 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 19:09:08,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:09:08,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:09:08,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:09:08,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:09:08,844 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:09:08,844 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:09:08,845 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:09:08,845 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:09:08,846 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:09:08,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:09:08,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:09:08,852 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:09:08,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:09:08,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:09:08,853 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:09:08,853 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:09:08,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:09:08,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:09:08,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:09:08,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:09:08,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:09:08,857 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:09:08,858 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:09:08,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:09:08,858 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:09:08,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:09:08,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:09:08,859 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:09:08,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:09:08,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:09:08,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:09:08,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:09:08,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:09:08,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:09:08,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:09:08,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:09:08,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:09:08,862 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:09:08,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:09:08,866 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_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2024-11-08 19:09:09,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:09:09,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:09:09,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:09:09,213 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:09:09,213 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:09:09,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i Unable to find full path for "g++" [2024-11-08 19:09:11,214 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:09:11,505 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:09:11,506 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2024-11-08 19:09:11,525 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/data/383f983c3/fce6dd7134aa4ccd857e2a87b008f327/FLAG54d03717e [2024-11-08 19:09:11,547 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/data/383f983c3/fce6dd7134aa4ccd857e2a87b008f327 [2024-11-08 19:09:11,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:09:11,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:09:11,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:09:11,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:09:11,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:09:11,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:09:11" (1/1) ... [2024-11-08 19:09:11,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b2813cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:11, skipping insertion in model container [2024-11-08 19:09:11,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:09:11" (1/1) ... [2024-11-08 19:09:11,618 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:09:12,018 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_51ddd636-f53b-407c-bee6-fa7858a3c36f/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2024-11-08 19:09:12,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:09:12,082 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:09:12,139 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_51ddd636-f53b-407c-bee6-fa7858a3c36f/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2024-11-08 19:09:12,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:09:12,220 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:09:12,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12 WrapperNode [2024-11-08 19:09:12,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:09:12,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:09:12,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:09:12,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:09:12,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (1/1) ... [2024-11-08 19:09:12,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (1/1) ... [2024-11-08 19:09:12,279 INFO L138 Inliner]: procedures = 171, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2024-11-08 19:09:12,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:09:12,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:09:12,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:09:12,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:09:12,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (1/1) ... [2024-11-08 19:09:12,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (1/1) ... [2024-11-08 19:09:12,295 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (1/1) ... [2024-11-08 19:09:12,315 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 2, 5, 5, 5]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 5, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0, 0]. [2024-11-08 19:09:12,316 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (1/1) ... [2024-11-08 19:09:12,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (1/1) ... [2024-11-08 19:09:12,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (1/1) ... [2024-11-08 19:09:12,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (1/1) ... [2024-11-08 19:09:12,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (1/1) ... [2024-11-08 19:09:12,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (1/1) ... [2024-11-08 19:09:12,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:09:12,333 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:09:12,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:09:12,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:09:12,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (1/1) ... [2024-11-08 19:09:12,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:09:12,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:09:12,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:09:12,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:09:12,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 19:09:12,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 19:09:12,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 19:09:12,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 19:09:12,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-08 19:09:12,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 19:09:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 19:09:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 19:09:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 19:09:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 19:09:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 19:09:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:09:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 19:09:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 19:09:12,409 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 19:09:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 19:09:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:09:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 19:09:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 19:09:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 19:09:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 19:09:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 19:09:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:09:12,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:09:12,412 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 19:09:12,632 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:09:12,634 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:09:12,995 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 19:09:12,996 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:09:13,214 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:09:13,215 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-08 19:09:13,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:09:13 BoogieIcfgContainer [2024-11-08 19:09:13,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:09:13,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:09:13,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:09:13,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:09:13,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:09:11" (1/3) ... [2024-11-08 19:09:13,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669bcfbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:09:13, skipping insertion in model container [2024-11-08 19:09:13,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:12" (2/3) ... [2024-11-08 19:09:13,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669bcfbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:09:13, skipping insertion in model container [2024-11-08 19:09:13,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:09:13" (3/3) ... [2024-11-08 19:09:13,229 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2024-11-08 19:09:13,250 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:09:13,250 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:09:13,250 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 19:09:13,300 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-08 19:09:13,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 55 transitions, 117 flow [2024-11-08 19:09:13,401 INFO L124 PetriNetUnfolderBase]: 17/81 cut-off events. [2024-11-08 19:09:13,401 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 19:09:13,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 17/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 247 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2024-11-08 19:09:13,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 55 transitions, 117 flow [2024-11-08 19:09:13,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 53 transitions, 110 flow [2024-11-08 19:09:13,421 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:09:13,427 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;@79c1240d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:09:13,427 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 19:09:13,437 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:09:13,437 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2024-11-08 19:09:13,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:09:13,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:09:13,438 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 19:09:13,439 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:09:13,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:09:13,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1085912986, now seen corresponding path program 1 times [2024-11-08 19:09:13,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:09:13,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770148310] [2024-11-08 19:09:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:09:13,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:09:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:09:13,606 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:09:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:09:13,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 19:09:13,692 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:09:13,694 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-08 19:09:13,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-08 19:09:13,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:09:13,697 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-08 19:09:13,703 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 19:09:13,703 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 19:09:13,732 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 19:09:13,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 80 transitions, 176 flow [2024-11-08 19:09:13,799 INFO L124 PetriNetUnfolderBase]: 31/142 cut-off events. [2024-11-08 19:09:13,799 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 19:09:13,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 31/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 512 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 85. Up to 8 conditions per place. [2024-11-08 19:09:13,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 80 transitions, 176 flow [2024-11-08 19:09:13,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 80 transitions, 176 flow [2024-11-08 19:09:13,808 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:09:13,813 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;@79c1240d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:09:13,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 19:09:13,829 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:09:13,829 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-08 19:09:13,829 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 19:09:13,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:09:13,830 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:09:13,830 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:09:13,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:09:13,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1462954640, now seen corresponding path program 1 times [2024-11-08 19:09:13,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:09:13,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505501973] [2024-11-08 19:09:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:09:13,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:09:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:09:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:09:14,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:09:14,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505501973] [2024-11-08 19:09:14,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505501973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:09:14,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:09:14,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:09:14,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377900623] [2024-11-08 19:09:14,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:09:14,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:09:14,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:09:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:09:14,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:09:14,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 80 [2024-11-08 19:09:14,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 80 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-11-08 19:09:14,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:09:14,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 80 [2024-11-08 19:09:14,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:09:15,197 INFO L124 PetriNetUnfolderBase]: 2787/5485 cut-off events. [2024-11-08 19:09:15,197 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-08 19:09:15,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9852 conditions, 5485 events. 2787/5485 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 39582 event pairs, 2430 based on Foata normal form. 1373/6544 useless extension candidates. Maximal degree in co-relation 8140. Up to 4298 conditions per place. [2024-11-08 19:09:15,236 INFO L140 encePairwiseOnDemand]: 61/80 looper letters, 38 selfloop transitions, 2 changer transitions 14/76 dead transitions. [2024-11-08 19:09:15,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 266 flow [2024-11-08 19:09:15,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:09:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:09:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-08 19:09:15,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-11-08 19:09:15,256 INFO L175 Difference]: Start difference. First operand has 66 places, 80 transitions, 176 flow. Second operand 3 states and 153 transitions. [2024-11-08 19:09:15,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 266 flow [2024-11-08 19:09:15,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:09:15,276 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 126 flow [2024-11-08 19:09:15,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-11-08 19:09:15,285 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2024-11-08 19:09:15,288 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 126 flow [2024-11-08 19:09:15,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-11-08 19:09:15,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:09:15,289 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-08 19:09:15,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:09:15,291 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:09:15,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:09:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash -767409675, now seen corresponding path program 1 times [2024-11-08 19:09:15,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:09:15,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193803040] [2024-11-08 19:09:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:09:15,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:09:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:09:15,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:09:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:09:15,435 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 19:09:15,439 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:09:15,440 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-08 19:09:15,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-08 19:09:15,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:09:15,441 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 19:09:15,442 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 19:09:15,442 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 19:09:15,476 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 19:09:15,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 105 transitions, 237 flow [2024-11-08 19:09:15,516 INFO L124 PetriNetUnfolderBase]: 50/220 cut-off events. [2024-11-08 19:09:15,517 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-08 19:09:15,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 220 events. 50/220 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 864 event pairs, 1 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 153. Up to 16 conditions per place. [2024-11-08 19:09:15,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 105 transitions, 237 flow [2024-11-08 19:09:15,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 105 transitions, 237 flow [2024-11-08 19:09:15,525 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:09:15,527 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;@79c1240d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:09:15,527 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 19:09:15,532 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:09:15,533 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-08 19:09:15,533 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 19:09:15,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:09:15,533 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:09:15,534 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:09:15,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:09:15,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2144215385, now seen corresponding path program 1 times [2024-11-08 19:09:15,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:09:15,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141849159] [2024-11-08 19:09:15,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:09:15,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:09:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:09:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:09:15,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:09:15,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141849159] [2024-11-08 19:09:15,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141849159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:09:15,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:09:15,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:09:15,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403660954] [2024-11-08 19:09:15,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:09:15,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:09:15,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:09:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:09:15,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:09:15,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 105 [2024-11-08 19:09:15,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 105 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-08 19:09:15,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:09:15,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 105 [2024-11-08 19:09:15,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:09:24,359 INFO L124 PetriNetUnfolderBase]: 42931/71018 cut-off events. [2024-11-08 19:09:24,360 INFO L125 PetriNetUnfolderBase]: For 1333/1333 co-relation queries the response was YES. [2024-11-08 19:09:24,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130754 conditions, 71018 events. 42931/71018 cut-off events. For 1333/1333 co-relation queries the response was YES. Maximal size of possible extension queue 1778. Compared 628778 event pairs, 26722 based on Foata normal form. 20426/88317 useless extension candidates. Maximal degree in co-relation 9894. Up to 58925 conditions per place. [2024-11-08 19:09:24,658 INFO L140 encePairwiseOnDemand]: 80/105 looper letters, 48 selfloop transitions, 2 changer transitions 15/95 dead transitions. [2024-11-08 19:09:24,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 95 transitions, 337 flow [2024-11-08 19:09:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:09:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:09:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-11-08 19:09:24,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6158730158730159 [2024-11-08 19:09:24,663 INFO L175 Difference]: Start difference. First operand has 86 places, 105 transitions, 237 flow. Second operand 3 states and 194 transitions. [2024-11-08 19:09:24,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 95 transitions, 337 flow [2024-11-08 19:09:24,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 95 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:09:24,671 INFO L231 Difference]: Finished difference. Result has 89 places, 70 transitions, 170 flow [2024-11-08 19:09:24,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2024-11-08 19:09:24,673 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-11-08 19:09:24,674 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 170 flow [2024-11-08 19:09:24,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-08 19:09:24,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:09:24,675 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:09:24,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:09:24,676 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:09:24,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:09:24,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1203705910, now seen corresponding path program 1 times [2024-11-08 19:09:24,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:09:24,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220289530] [2024-11-08 19:09:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:09:24,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:09:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:09:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:09:24,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:09:24,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220289530] [2024-11-08 19:09:24,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220289530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:09:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54630717] [2024-11-08 19:09:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:09:24,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:09:24,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:09:24,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:09:24,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:09:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:09:24,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 19:09:24,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:09:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:09:24,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:09:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:09:25,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54630717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:09:25,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:09:25,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-08 19:09:25,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633724276] [2024-11-08 19:09:25,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:09:25,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:09:25,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:09:25,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:09:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:09:25,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 105 [2024-11-08 19:09:25,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 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) [2024-11-08 19:09:25,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:09:25,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 105 [2024-11-08 19:09:25,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:09:26,962 INFO L124 PetriNetUnfolderBase]: 10557/16944 cut-off events. [2024-11-08 19:09:26,962 INFO L125 PetriNetUnfolderBase]: For 4810/4810 co-relation queries the response was YES. [2024-11-08 19:09:26,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33504 conditions, 16944 events. 10557/16944 cut-off events. For 4810/4810 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 125152 event pairs, 1056 based on Foata normal form. 2220/18593 useless extension candidates. Maximal degree in co-relation 29990. Up to 11100 conditions per place. [2024-11-08 19:09:27,073 INFO L140 encePairwiseOnDemand]: 101/105 looper letters, 92 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-11-08 19:09:27,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 121 transitions, 462 flow [2024-11-08 19:09:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:09:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 19:09:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 306 transitions. [2024-11-08 19:09:27,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-11-08 19:09:27,076 INFO L175 Difference]: Start difference. First operand has 89 places, 70 transitions, 170 flow. Second operand 6 states and 306 transitions. [2024-11-08 19:09:27,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 121 transitions, 462 flow [2024-11-08 19:09:27,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 121 transitions, 458 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-08 19:09:27,088 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 154 flow [2024-11-08 19:09:27,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-11-08 19:09:27,091 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2024-11-08 19:09:27,092 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 154 flow [2024-11-08 19:09:27,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 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) [2024-11-08 19:09:27,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:09:27,093 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-08 19:09:27,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 19:09:27,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ddd636-f53b-407c-bee6-fa7858a3c36f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:09:27,298 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:09:27,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:09:27,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1594963199, now seen corresponding path program 1 times [2024-11-08 19:09:27,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:09:27,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590331412] [2024-11-08 19:09:27,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:09:27,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:09:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:09:27,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:09:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:09:27,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 19:09:27,374 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:09:27,374 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-08 19:09:27,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-08 19:09:27,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 19:09:27,377 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-08 19:09:27,379 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 19:09:27,379 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-08 19:09:27,424 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 19:09:27,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 130 transitions, 300 flow [2024-11-08 19:09:27,478 INFO L124 PetriNetUnfolderBase]: 81/334 cut-off events. [2024-11-08 19:09:27,478 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-08 19:09:27,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 334 events. 81/334 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1384 event pairs, 6 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 244. Up to 32 conditions per place. [2024-11-08 19:09:27,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 130 transitions, 300 flow [2024-11-08 19:09:27,485 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 130 transitions, 300 flow [2024-11-08 19:09:27,488 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:09:27,489 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;@79c1240d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:09:27,490 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 19:09:27,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:09:27,495 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-08 19:09:27,495 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 19:09:27,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:09:27,496 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:09:27,496 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 19:09:27,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:09:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1292656859, now seen corresponding path program 1 times [2024-11-08 19:09:27,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:09:27,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873005247] [2024-11-08 19:09:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:09:27,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:09:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:09:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:09:27,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:09:27,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873005247] [2024-11-08 19:09:27,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873005247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:09:27,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:09:27,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:09:27,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876052826] [2024-11-08 19:09:27,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:09:27,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:09:27,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:09:27,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:09:27,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:09:27,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 130 [2024-11-08 19:09:27,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 130 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2024-11-08 19:09:27,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:09:27,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 130 [2024-11-08 19:09:27,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand