./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/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_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/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_fc910568-b001-46c3-922d-ae5a0c022a32/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 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:14:23,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:14:23,839 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:14:23,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:14:23,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:14:23,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:14:23,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:14:23,870 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:14:23,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:14:23,870 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:14:23,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:14:23,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:14:23,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:14:23,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:14:23,873 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:14:23,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:14:23,873 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:14:23,874 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:14:23,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:14:23,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:14:23,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:14:23,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:14:23,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:14:23,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:14:23,877 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:14:23,877 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:14:23,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:14:23,878 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:14:23,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:14:23,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:14:23,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:14:23,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:14:23,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:14:23,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:14:23,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:14:23,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:14:23,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:14:23,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:14:23,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:14:23,882 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:14:23,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:14:23,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:14:23,884 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_fc910568-b001-46c3-922d-ae5a0c022a32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 [2024-11-08 16:14:24,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:14:24,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:14:24,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:14:24,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:14:24,159 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:14:24,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i Unable to find full path for "g++" [2024-11-08 16:14:26,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:14:26,350 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:14:26,351 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2024-11-08 16:14:26,380 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/data/51b7b446e/8c64ccad71574fbeb75d7cf89252dd46/FLAGae220e69f [2024-11-08 16:14:26,396 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/data/51b7b446e/8c64ccad71574fbeb75d7cf89252dd46 [2024-11-08 16:14:26,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:14:26,400 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:14:26,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:14:26,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:14:26,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:14:26,408 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:14:26" (1/1) ... [2024-11-08 16:14:26,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ad660f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:26, skipping insertion in model container [2024-11-08 16:14:26,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:14:26" (1/1) ... [2024-11-08 16:14:26,469 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:14:27,005 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_fc910568-b001-46c3-922d-ae5a0c022a32/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2024-11-08 16:14:27,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:14:27,100 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:14:27,161 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_fc910568-b001-46c3-922d-ae5a0c022a32/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2024-11-08 16:14:27,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:14:27,232 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:14:27,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27 WrapperNode [2024-11-08 16:14:27,233 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:14:27,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:14:27,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:14:27,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:14:27,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (1/1) ... [2024-11-08 16:14:27,257 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (1/1) ... [2024-11-08 16:14:27,289 INFO L138 Inliner]: procedures = 271, calls = 109, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 262 [2024-11-08 16:14:27,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:14:27,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:14:27,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:14:27,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:14:27,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (1/1) ... [2024-11-08 16:14:27,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (1/1) ... [2024-11-08 16:14:27,312 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (1/1) ... [2024-11-08 16:14:27,337 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 70, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 5 writes are split as follows [0, 0, 4, 1]. [2024-11-08 16:14:27,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (1/1) ... [2024-11-08 16:14:27,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (1/1) ... [2024-11-08 16:14:27,348 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (1/1) ... [2024-11-08 16:14:27,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (1/1) ... [2024-11-08 16:14:27,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (1/1) ... [2024-11-08 16:14:27,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (1/1) ... [2024-11-08 16:14:27,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:14:27,361 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:14:27,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:14:27,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:14:27,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (1/1) ... [2024-11-08 16:14:27,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:14:27,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:27,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:14:27,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:14:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:14:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:14:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 16:14:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:14:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:14:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 16:14:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 16:14:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:14:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:14:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 16:14:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 16:14:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 16:14:27,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:14:27,474 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 16:14:27,474 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 16:14:27,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:14:27,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:14:27,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 16:14:27,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 16:14:27,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:14:27,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:14:27,477 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 16:14:27,634 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:14:27,636 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:14:28,054 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:14:28,054 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:14:28,663 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:14:28,663 INFO L316 CfgBuilder]: Removed 20 assume(true) statements. [2024-11-08 16:14:28,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:14:28 BoogieIcfgContainer [2024-11-08 16:14:28,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:14:28,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:14:28,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:14:28,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:14:28,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:14:26" (1/3) ... [2024-11-08 16:14:28,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431ffb71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:14:28, skipping insertion in model container [2024-11-08 16:14:28,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:14:27" (2/3) ... [2024-11-08 16:14:28,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431ffb71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:14:28, skipping insertion in model container [2024-11-08 16:14:28,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:14:28" (3/3) ... [2024-11-08 16:14:28,676 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2024-11-08 16:14:28,695 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:14:28,695 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:14:28,695 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:14:28,749 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-08 16:14:28,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 102 transitions, 211 flow [2024-11-08 16:14:28,871 INFO L124 PetriNetUnfolderBase]: 43/152 cut-off events. [2024-11-08 16:14:28,872 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 16:14:28,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 152 events. 43/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 582 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 92. Up to 8 conditions per place. [2024-11-08 16:14:28,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 102 transitions, 211 flow [2024-11-08 16:14:28,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 100 transitions, 204 flow [2024-11-08 16:14:28,923 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:14:28,932 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;@7d5ce323, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:14:28,933 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 16:14:28,954 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:14:28,955 INFO L124 PetriNetUnfolderBase]: 7/38 cut-off events. [2024-11-08 16:14:28,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:14:28,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:14:28,956 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:28,956 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-08 16:14:28,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash 175775180, now seen corresponding path program 1 times [2024-11-08 16:14:28,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:28,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773061696] [2024-11-08 16:14:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:28,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:14:29,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:29,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773061696] [2024-11-08 16:14:29,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773061696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:14:29,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:14:29,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:14:29,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007304040] [2024-11-08 16:14:29,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:14:29,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:14:29,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:14:29,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:14:29,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 102 [2024-11-08 16:14:29,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 100 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 16:14:29,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:14:29,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 102 [2024-11-08 16:14:29,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:14:29,890 INFO L124 PetriNetUnfolderBase]: 423/1202 cut-off events. [2024-11-08 16:14:29,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:14:29,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2004 conditions, 1202 events. 423/1202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7715 event pairs, 360 based on Foata normal form. 284/1383 useless extension candidates. Maximal degree in co-relation 1923. Up to 797 conditions per place. [2024-11-08 16:14:29,906 INFO L140 encePairwiseOnDemand]: 76/102 looper letters, 43 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-11-08 16:14:29,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 252 flow [2024-11-08 16:14:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:14:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:14:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-08 16:14:29,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-11-08 16:14:29,926 INFO L175 Difference]: Start difference. First operand has 75 places, 100 transitions, 204 flow. Second operand 3 states and 171 transitions. [2024-11-08 16:14:29,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 252 flow [2024-11-08 16:14:29,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:14:29,936 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 174 flow [2024-11-08 16:14:29,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2024-11-08 16:14:29,944 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-08 16:14:29,944 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 174 flow [2024-11-08 16:14:29,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 16:14:29,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:14:29,945 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:29,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:14:29,946 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-08 16:14:29,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:29,947 INFO L85 PathProgramCache]: Analyzing trace with hash 808456671, now seen corresponding path program 1 times [2024-11-08 16:14:29,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:29,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046230345] [2024-11-08 16:14:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:29,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:14:30,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:30,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046230345] [2024-11-08 16:14:30,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046230345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:30,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693492221] [2024-11-08 16:14:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:30,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:30,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:30,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:30,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:14:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:30,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 16:14:30,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:14:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:14:30,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:14:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:14:30,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693492221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:14:30,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:14:30,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-08 16:14:30,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870057484] [2024-11-08 16:14:30,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:14:30,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:14:30,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:14:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:14:30,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 102 [2024-11-08 16:14:30,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 35.142857142857146) internal successors, (246), 7 states have internal predecessors, (246), 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 16:14:30,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:14:30,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 102 [2024-11-08 16:14:30,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:14:30,720 INFO L124 PetriNetUnfolderBase]: 422/1206 cut-off events. [2024-11-08 16:14:30,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:14:30,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 1206 events. 422/1206 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7743 event pairs, 360 based on Foata normal form. 3/1107 useless extension candidates. Maximal degree in co-relation 2009. Up to 795 conditions per place. [2024-11-08 16:14:30,727 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 45 selfloop transitions, 6 changer transitions 0/84 dead transitions. [2024-11-08 16:14:30,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 84 transitions, 288 flow [2024-11-08 16:14:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:14:30,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:14:30,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 255 transitions. [2024-11-08 16:14:30,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-08 16:14:30,735 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 174 flow. Second operand 6 states and 255 transitions. [2024-11-08 16:14:30,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 84 transitions, 288 flow [2024-11-08 16:14:30,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 84 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:14:30,738 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 208 flow [2024-11-08 16:14:30,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2024-11-08 16:14:30,740 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2024-11-08 16:14:30,741 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 208 flow [2024-11-08 16:14:30,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.142857142857146) internal successors, (246), 7 states have internal predecessors, (246), 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 16:14:30,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:14:30,743 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:30,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 16:14:30,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:30,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-08 16:14:30,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash 442915224, now seen corresponding path program 2 times [2024-11-08 16:14:30,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:30,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227594190] [2024-11-08 16:14:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:30,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:14:31,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:31,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227594190] [2024-11-08 16:14:31,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227594190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:31,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908875632] [2024-11-08 16:14:31,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:14:31,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:31,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:31,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:31,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:14:31,313 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:14:31,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:14:31,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:14:31,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:14:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:14:31,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:14:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:14:31,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908875632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:14:31,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:14:31,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-08 16:14:31,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076422895] [2024-11-08 16:14:31,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:14:31,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 16:14:31,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:31,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 16:14:31,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:14:31,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 102 [2024-11-08 16:14:31,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 208 flow. Second operand has 13 states, 13 states have (on average 35.07692307692308) internal successors, (456), 13 states have internal predecessors, (456), 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 16:14:31,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:14:31,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 102 [2024-11-08 16:14:31,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:14:31,797 INFO L124 PetriNetUnfolderBase]: 422/1218 cut-off events. [2024-11-08 16:14:31,797 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-08 16:14:31,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 1218 events. 422/1218 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7709 event pairs, 360 based on Foata normal form. 6/1122 useless extension candidates. Maximal degree in co-relation 1995. Up to 795 conditions per place. [2024-11-08 16:14:31,803 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 51 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2024-11-08 16:14:31,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 96 transitions, 430 flow [2024-11-08 16:14:31,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 16:14:31,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 16:14:31,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 465 transitions. [2024-11-08 16:14:31,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3799019607843137 [2024-11-08 16:14:31,806 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 208 flow. Second operand 12 states and 465 transitions. [2024-11-08 16:14:31,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 96 transitions, 430 flow [2024-11-08 16:14:31,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 410 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-08 16:14:31,811 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 296 flow [2024-11-08 16:14:31,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=296, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2024-11-08 16:14:31,812 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 28 predicate places. [2024-11-08 16:14:31,812 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 296 flow [2024-11-08 16:14:31,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.07692307692308) internal successors, (456), 13 states have internal predecessors, (456), 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 16:14:31,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:14:31,813 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:31,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:14:32,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:32,015 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-08 16:14:32,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:32,015 INFO L85 PathProgramCache]: Analyzing trace with hash 362785994, now seen corresponding path program 3 times [2024-11-08 16:14:32,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:32,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241586] [2024-11-08 16:14:32,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:32,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:14:32,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:14:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:14:32,127 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:14:32,127 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:14:32,129 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-08 16:14:32,131 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-08 16:14:32,131 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-08 16:14:32,132 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-08 16:14:32,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:14:32,132 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-08 16:14:32,134 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:14:32,135 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 16:14:32,180 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 16:14:32,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 145 transitions, 306 flow [2024-11-08 16:14:32,214 INFO L124 PetriNetUnfolderBase]: 72/255 cut-off events. [2024-11-08 16:14:32,215 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 16:14:32,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 255 events. 72/255 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1113 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 154. Up to 12 conditions per place. [2024-11-08 16:14:32,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 145 transitions, 306 flow [2024-11-08 16:14:32,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 145 transitions, 306 flow [2024-11-08 16:14:32,226 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:14:32,226 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;@7d5ce323, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:14:32,227 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 16:14:32,239 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:14:32,239 INFO L124 PetriNetUnfolderBase]: 15/76 cut-off events. [2024-11-08 16:14:32,240 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 16:14:32,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:14:32,240 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:32,241 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-08 16:14:32,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:32,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1721449214, now seen corresponding path program 1 times [2024-11-08 16:14:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:32,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739087263] [2024-11-08 16:14:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:32,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:32,307 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 16:14:32,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:32,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739087263] [2024-11-08 16:14:32,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739087263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:14:32,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:14:32,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:14:32,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191420868] [2024-11-08 16:14:32,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:14:32,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:14:32,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:32,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:14:32,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:14:32,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 145 [2024-11-08 16:14:32,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 145 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 16:14:32,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:14:32,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 145 [2024-11-08 16:14:32,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:14:36,445 INFO L124 PetriNetUnfolderBase]: 15935/31219 cut-off events. [2024-11-08 16:14:36,445 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-08 16:14:36,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54548 conditions, 31219 events. 15935/31219 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 292348 event pairs, 14472 based on Foata normal form. 8464/37221 useless extension candidates. Maximal degree in co-relation 44259. Up to 23226 conditions per place. [2024-11-08 16:14:36,678 INFO L140 encePairwiseOnDemand]: 108/145 looper letters, 65 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2024-11-08 16:14:36,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 113 transitions, 376 flow [2024-11-08 16:14:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:14:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:14:36,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2024-11-08 16:14:36,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-08 16:14:36,685 INFO L175 Difference]: Start difference. First operand has 108 places, 145 transitions, 306 flow. Second operand 3 states and 240 transitions. [2024-11-08 16:14:36,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 113 transitions, 376 flow [2024-11-08 16:14:36,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 113 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:14:36,694 INFO L231 Difference]: Finished difference. Result has 111 places, 113 transitions, 254 flow [2024-11-08 16:14:36,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=111, PETRI_TRANSITIONS=113} [2024-11-08 16:14:36,696 INFO L277 CegarLoopForPetriNet]: 108 programPoint places, 3 predicate places. [2024-11-08 16:14:36,698 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 113 transitions, 254 flow [2024-11-08 16:14:36,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 16:14:36,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:14:36,699 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:36,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:14:36,699 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-08 16:14:36,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:36,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1415590933, now seen corresponding path program 1 times [2024-11-08 16:14:36,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:36,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33022331] [2024-11-08 16:14:36,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:36,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:36,812 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 16:14:36,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:36,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33022331] [2024-11-08 16:14:36,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33022331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528409232] [2024-11-08 16:14:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:36,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:36,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:36,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:36,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:14:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:36,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:14:36,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:14:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:14:36,962 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:14:36,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528409232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:14:36,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:14:36,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 16:14:36,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331459065] [2024-11-08 16:14:36,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:14:36,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:14:36,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:14:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:14:36,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 145 [2024-11-08 16:14:36,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 113 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 16:14:36,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:14:36,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 145 [2024-11-08 16:14:36,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:14:40,263 INFO L124 PetriNetUnfolderBase]: 17922/34789 cut-off events. [2024-11-08 16:14:40,263 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-08 16:14:40,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60638 conditions, 34789 events. 17922/34789 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 321643 event pairs, 12186 based on Foata normal form. 1/31694 useless extension candidates. Maximal degree in co-relation 60624. Up to 25718 conditions per place. [2024-11-08 16:14:40,548 INFO L140 encePairwiseOnDemand]: 141/145 looper letters, 86 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-11-08 16:14:40,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 133 transitions, 470 flow [2024-11-08 16:14:40,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:14:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:14:40,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-11-08 16:14:40,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5149425287356322 [2024-11-08 16:14:40,551 INFO L175 Difference]: Start difference. First operand has 111 places, 113 transitions, 254 flow. Second operand 3 states and 224 transitions. [2024-11-08 16:14:40,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 133 transitions, 470 flow [2024-11-08 16:14:40,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 133 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:14:40,555 INFO L231 Difference]: Finished difference. Result has 113 places, 114 transitions, 266 flow [2024-11-08 16:14:40,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=113, PETRI_TRANSITIONS=114} [2024-11-08 16:14:40,556 INFO L277 CegarLoopForPetriNet]: 108 programPoint places, 5 predicate places. [2024-11-08 16:14:40,556 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 114 transitions, 266 flow [2024-11-08 16:14:40,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 16:14:40,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:14:40,557 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:40,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:14:40,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:40,762 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-08 16:14:40,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:40,763 INFO L85 PathProgramCache]: Analyzing trace with hash -596030731, now seen corresponding path program 1 times [2024-11-08 16:14:40,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:40,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940189216] [2024-11-08 16:14:40,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:40,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 16:14:40,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:40,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940189216] [2024-11-08 16:14:40,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940189216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:40,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588488969] [2024-11-08 16:14:40,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:40,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:40,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:40,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:40,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:14:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:40,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 16:14:40,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:14:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 16:14:40,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:14:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 16:14:40,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588488969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:14:40,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:14:40,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-08 16:14:40,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168140265] [2024-11-08 16:14:40,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:14:40,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:14:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:40,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:14:40,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:14:40,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 145 [2024-11-08 16:14:40,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 114 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 47.285714285714285) internal successors, (331), 7 states have internal predecessors, (331), 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 16:14:40,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:14:40,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 145 [2024-11-08 16:14:40,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:14:43,829 INFO L124 PetriNetUnfolderBase]: 16071/31776 cut-off events. [2024-11-08 16:14:43,829 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2024-11-08 16:14:43,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55510 conditions, 31776 events. 16071/31776 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 298694 event pairs, 14472 based on Foata normal form. 3/29070 useless extension candidates. Maximal degree in co-relation 55475. Up to 23190 conditions per place. [2024-11-08 16:14:44,139 INFO L140 encePairwiseOnDemand]: 140/145 looper letters, 68 selfloop transitions, 6 changer transitions 0/119 dead transitions. [2024-11-08 16:14:44,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 119 transitions, 426 flow [2024-11-08 16:14:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:14:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:14:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 349 transitions. [2024-11-08 16:14:44,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4011494252873563 [2024-11-08 16:14:44,145 INFO L175 Difference]: Start difference. First operand has 113 places, 114 transitions, 266 flow. Second operand 6 states and 349 transitions. [2024-11-08 16:14:44,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 119 transitions, 426 flow [2024-11-08 16:14:44,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 119 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:14:44,154 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 300 flow [2024-11-08 16:14:44,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2024-11-08 16:14:44,159 INFO L277 CegarLoopForPetriNet]: 108 programPoint places, 13 predicate places. [2024-11-08 16:14:44,159 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 300 flow [2024-11-08 16:14:44,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 47.285714285714285) internal successors, (331), 7 states have internal predecessors, (331), 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 16:14:44,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:14:44,160 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:44,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:14:44,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:44,363 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-08 16:14:44,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1178047346, now seen corresponding path program 2 times [2024-11-08 16:14:44,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347287430] [2024-11-08 16:14:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 16:14:44,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:44,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347287430] [2024-11-08 16:14:44,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347287430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:44,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189039428] [2024-11-08 16:14:44,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:14:44,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:44,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:44,552 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:44,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:14:44,694 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:14:44,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:14:44,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:14:44,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:14:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 16:14:44,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:14:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 16:14:44,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189039428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:14:44,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:14:44,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-08 16:14:44,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994579002] [2024-11-08 16:14:44,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:14:44,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 16:14:44,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:44,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 16:14:44,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:14:44,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 145 [2024-11-08 16:14:44,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 300 flow. Second operand has 13 states, 13 states have (on average 47.15384615384615) internal successors, (613), 13 states have internal predecessors, (613), 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 16:14:44,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:14:44,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 145 [2024-11-08 16:14:44,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:14:47,890 INFO L124 PetriNetUnfolderBase]: 16071/31788 cut-off events. [2024-11-08 16:14:47,890 INFO L125 PetriNetUnfolderBase]: For 499/499 co-relation queries the response was YES. [2024-11-08 16:14:47,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55566 conditions, 31788 events. 16071/31788 cut-off events. For 499/499 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 298789 event pairs, 14472 based on Foata normal form. 6/29085 useless extension candidates. Maximal degree in co-relation 55462. Up to 23190 conditions per place. [2024-11-08 16:14:48,061 INFO L140 encePairwiseOnDemand]: 141/145 looper letters, 74 selfloop transitions, 12 changer transitions 0/131 dead transitions. [2024-11-08 16:14:48,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 131 transitions, 568 flow [2024-11-08 16:14:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 16:14:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 16:14:48,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 631 transitions. [2024-11-08 16:14:48,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3626436781609195 [2024-11-08 16:14:48,064 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 300 flow. Second operand 12 states and 631 transitions. [2024-11-08 16:14:48,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 131 transitions, 568 flow [2024-11-08 16:14:48,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 131 transitions, 548 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-08 16:14:48,071 INFO L231 Difference]: Finished difference. Result has 138 places, 123 transitions, 388 flow [2024-11-08 16:14:48,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=388, PETRI_PLACES=138, PETRI_TRANSITIONS=123} [2024-11-08 16:14:48,072 INFO L277 CegarLoopForPetriNet]: 108 programPoint places, 30 predicate places. [2024-11-08 16:14:48,072 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 123 transitions, 388 flow [2024-11-08 16:14:48,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 47.15384615384615) internal successors, (613), 13 states have internal predecessors, (613), 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 16:14:48,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:14:48,073 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:48,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:14:48,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc910568-b001-46c3-922d-ae5a0c022a32/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:48,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-08 16:14:48,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:48,275 INFO L85 PathProgramCache]: Analyzing trace with hash 973650816, now seen corresponding path program 3 times [2024-11-08 16:14:48,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:48,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829728462] [2024-11-08 16:14:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:48,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:14:48,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:14:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:14:48,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:14:48,371 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:14:48,371 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-08 16:14:48,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-08 16:14:48,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-08 16:14:48,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-08 16:14:48,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-08 16:14:48,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:14:48,372 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-08 16:14:48,373 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:14:48,373 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 16:14:48,428 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 16:14:48,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 188 transitions, 403 flow [2024-11-08 16:14:48,495 INFO L124 PetriNetUnfolderBase]: 106/375 cut-off events. [2024-11-08 16:14:48,495 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-08 16:14:48,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 375 events. 106/375 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1743 event pairs, 1 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 263. Up to 16 conditions per place. [2024-11-08 16:14:48,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 188 transitions, 403 flow [2024-11-08 16:14:48,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 188 transitions, 403 flow [2024-11-08 16:14:48,509 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:14:48,510 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;@7d5ce323, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:14:48,510 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-08 16:14:48,523 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:14:48,523 INFO L124 PetriNetUnfolderBase]: 15/76 cut-off events. [2024-11-08 16:14:48,524 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 16:14:48,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:14:48,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:48,524 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-08 16:14:48,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:48,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1130262202, now seen corresponding path program 1 times [2024-11-08 16:14:48,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:48,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742054796] [2024-11-08 16:14:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:48,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:48,594 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 16:14:48,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:48,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742054796] [2024-11-08 16:14:48,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742054796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:14:48,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:14:48,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:14:48,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778194064] [2024-11-08 16:14:48,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:14:48,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:14:48,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:48,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:14:48,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:14:48,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 188 [2024-11-08 16:14:48,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 188 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 16:14:48,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:14:48,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 188 [2024-11-08 16:14:48,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand