./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/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_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/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_51ce6101-fd0d-4beb-9baa-e68a701aefdb/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 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:18:08,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:18:08,176 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:18:08,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:18:08,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:18:08,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:18:08,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:18:08,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:18:08,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:18:08,209 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:18:08,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:18:08,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:18:08,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:18:08,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:18:08,215 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:18:08,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:18:08,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:18:08,217 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:18:08,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:18:08,221 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:18:08,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:18:08,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:18:08,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:18:08,226 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:18:08,227 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:18:08,227 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:18:08,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:18:08,228 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:18:08,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:18:08,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:18:08,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:18:08,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:18:08,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:18:08,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:18:08,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:18:08,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:18:08,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:18:08,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:18:08,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:18:08,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:18:08,238 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:18:08,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:18:08,239 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_51ce6101-fd0d-4beb-9baa-e68a701aefdb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 [2024-11-08 17:18:08,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:18:08,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:18:08,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:18:08,619 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:18:08,620 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:18:08,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c Unable to find full path for "g++" [2024-11-08 17:18:11,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:18:11,342 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:18:11,342 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2024-11-08 17:18:11,358 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/data/2537b9c7a/182355db12f34f419984b504624dfebb/FLAG269cf28d6 [2024-11-08 17:18:11,649 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/data/2537b9c7a/182355db12f34f419984b504624dfebb [2024-11-08 17:18:11,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:18:11,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:18:11,665 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:18:11,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:18:11,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:18:11,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:18:11" (1/1) ... [2024-11-08 17:18:11,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380ec239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:11, skipping insertion in model container [2024-11-08 17:18:11,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:18:11" (1/1) ... [2024-11-08 17:18:11,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:18:12,075 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_51ce6101-fd0d-4beb-9baa-e68a701aefdb/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4827,4840] [2024-11-08 17:18:12,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:18:12,114 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:18:12,166 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_51ce6101-fd0d-4beb-9baa-e68a701aefdb/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4827,4840] [2024-11-08 17:18:12,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:18:12,196 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:18:12,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12 WrapperNode [2024-11-08 17:18:12,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:18:12,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:18:12,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:18:12,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:18:12,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (1/1) ... [2024-11-08 17:18:12,231 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (1/1) ... [2024-11-08 17:18:12,291 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 300 [2024-11-08 17:18:12,292 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:18:12,293 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:18:12,293 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:18:12,293 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:18:12,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (1/1) ... [2024-11-08 17:18:12,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (1/1) ... [2024-11-08 17:18:12,311 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (1/1) ... [2024-11-08 17:18:12,333 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 17:18:12,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (1/1) ... [2024-11-08 17:18:12,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (1/1) ... [2024-11-08 17:18:12,346 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (1/1) ... [2024-11-08 17:18:12,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (1/1) ... [2024-11-08 17:18:12,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (1/1) ... [2024-11-08 17:18:12,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (1/1) ... [2024-11-08 17:18:12,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:18:12,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:18:12,369 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:18:12,369 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:18:12,370 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (1/1) ... [2024-11-08 17:18:12,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:18:12,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:18:12,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:18:12,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:18:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:18:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:18:12,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:18:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:18:12,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:18:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:18:12,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:18:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:18:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:18:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:18:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:18:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:18:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:18:12,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:18:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:18:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:18:12,463 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 17:18:12,619 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:18:12,623 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:18:13,312 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:18:13,312 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:18:14,007 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:18:14,008 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 17:18:14,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:18:14 BoogieIcfgContainer [2024-11-08 17:18:14,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:18:14,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:18:14,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:18:14,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:18:14,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:18:11" (1/3) ... [2024-11-08 17:18:14,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741235af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:18:14, skipping insertion in model container [2024-11-08 17:18:14,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:12" (2/3) ... [2024-11-08 17:18:14,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741235af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:18:14, skipping insertion in model container [2024-11-08 17:18:14,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:18:14" (3/3) ... [2024-11-08 17:18:14,025 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2024-11-08 17:18:14,056 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:18:14,057 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:18:14,057 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:18:14,185 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 17:18:14,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 39 transitions, 99 flow [2024-11-08 17:18:14,301 INFO L124 PetriNetUnfolderBase]: 8/36 cut-off events. [2024-11-08 17:18:14,301 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:18:14,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 8/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-08 17:18:14,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 39 transitions, 99 flow [2024-11-08 17:18:14,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 35 transitions, 88 flow [2024-11-08 17:18:14,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:18:14,339 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;@4bdba897, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:18:14,340 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 17:18:14,359 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:18:14,359 INFO L124 PetriNetUnfolderBase]: 8/34 cut-off events. [2024-11-08 17:18:14,359 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:18:14,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:14,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:14,361 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:14,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1646961992, now seen corresponding path program 1 times [2024-11-08 17:18:14,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:14,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671027431] [2024-11-08 17:18:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:14,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:15,060 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 17:18:15,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:15,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671027431] [2024-11-08 17:18:15,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671027431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:15,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:15,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:18:15,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718474915] [2024-11-08 17:18:15,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:15,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:18:15,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:15,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:18:15,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:18:15,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 39 [2024-11-08 17:18:15,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 17:18:15,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:15,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 39 [2024-11-08 17:18:15,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:15,729 INFO L124 PetriNetUnfolderBase]: 793/1142 cut-off events. [2024-11-08 17:18:15,730 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-11-08 17:18:15,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2379 conditions, 1142 events. 793/1142 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3706 event pairs, 608 based on Foata normal form. 1/959 useless extension candidates. Maximal degree in co-relation 2150. Up to 1139 conditions per place. [2024-11-08 17:18:15,749 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 29 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-08 17:18:15,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 146 flow [2024-11-08 17:18:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:18:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:18:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-08 17:18:15,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-11-08 17:18:15,770 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 88 flow. Second operand 3 states and 51 transitions. [2024-11-08 17:18:15,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 146 flow [2024-11-08 17:18:15,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 134 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:18:15,783 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 84 flow [2024-11-08 17:18:15,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-11-08 17:18:15,792 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2024-11-08 17:18:15,793 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 84 flow [2024-11-08 17:18:15,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 17:18:15,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:15,795 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:15,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:18:15,795 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:15,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:15,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1055933651, now seen corresponding path program 1 times [2024-11-08 17:18:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:15,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565792267] [2024-11-08 17:18:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:15,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:16,135 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 17:18:16,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:16,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565792267] [2024-11-08 17:18:16,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565792267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:18:16,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589314332] [2024-11-08 17:18:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:16,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:18:16,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:18:16,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:18:16,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:18:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:16,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:18:16,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:18:16,486 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 17:18:16,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:18:16,552 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 17:18:16,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589314332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:18:16,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:18:16,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-08 17:18:16,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212526080] [2024-11-08 17:18:16,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:18:16,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:18:16,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:16,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:18:16,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:18:16,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2024-11-08 17:18:16,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 17:18:16,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:16,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2024-11-08 17:18:16,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:16,998 INFO L124 PetriNetUnfolderBase]: 792/1144 cut-off events. [2024-11-08 17:18:16,999 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-08 17:18:17,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 1144 events. 792/1144 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3702 event pairs, 608 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 2315. Up to 1137 conditions per place. [2024-11-08 17:18:17,010 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 30 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-11-08 17:18:17,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 160 flow [2024-11-08 17:18:17,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:18:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:18:17,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-08 17:18:17,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30256410256410254 [2024-11-08 17:18:17,016 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 84 flow. Second operand 5 states and 59 transitions. [2024-11-08 17:18:17,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 160 flow [2024-11-08 17:18:17,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:18:17,021 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 108 flow [2024-11-08 17:18:17,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-08 17:18:17,022 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-11-08 17:18:17,022 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 108 flow [2024-11-08 17:18:17,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 17:18:17,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:17,024 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:17,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:18:17,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:18:17,229 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:17,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:17,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1331451403, now seen corresponding path program 2 times [2024-11-08 17:18:17,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:17,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027427600] [2024-11-08 17:18:17,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:17,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:17,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:18:17,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:17,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027427600] [2024-11-08 17:18:17,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027427600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:17,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:17,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:18:17,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725791885] [2024-11-08 17:18:17,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:17,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:18:17,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:17,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:18:17,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:18:17,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:18:17,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 17:18:17,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:17,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:18:17,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:18,423 INFO L124 PetriNetUnfolderBase]: 1435/2066 cut-off events. [2024-11-08 17:18:18,423 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-08 17:18:18,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 2066 events. 1435/2066 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8215 event pairs, 608 based on Foata normal form. 1/1723 useless extension candidates. Maximal degree in co-relation 4172. Up to 1139 conditions per place. [2024-11-08 17:18:18,436 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 45 selfloop transitions, 2 changer transitions 20/71 dead transitions. [2024-11-08 17:18:18,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 71 transitions, 323 flow [2024-11-08 17:18:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:18:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:18:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-08 17:18:18,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2024-11-08 17:18:18,439 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 108 flow. Second operand 4 states and 94 transitions. [2024-11-08 17:18:18,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 71 transitions, 323 flow [2024-11-08 17:18:18,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 71 transitions, 317 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-08 17:18:18,444 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 116 flow [2024-11-08 17:18:18,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-11-08 17:18:18,446 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-11-08 17:18:18,446 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 116 flow [2024-11-08 17:18:18,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 17:18:18,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:18,447 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:18,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:18:18,448 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:18,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:18,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2095565018, now seen corresponding path program 1 times [2024-11-08 17:18:18,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:18,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610558608] [2024-11-08 17:18:18,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:18,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:18:18,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:18,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610558608] [2024-11-08 17:18:18,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610558608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:18,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:18,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:18:18,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518040155] [2024-11-08 17:18:18,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:18,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:18:18,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:18,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:18:18,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:18:18,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:18:18,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 17:18:18,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:18,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:18:18,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:19,841 INFO L124 PetriNetUnfolderBase]: 2206/3154 cut-off events. [2024-11-08 17:18:19,842 INFO L125 PetriNetUnfolderBase]: For 687/687 co-relation queries the response was YES. [2024-11-08 17:18:19,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6959 conditions, 3154 events. 2206/3154 cut-off events. For 687/687 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 13381 event pairs, 983 based on Foata normal form. 1/2798 useless extension candidates. Maximal degree in co-relation 6946. Up to 1766 conditions per place. [2024-11-08 17:18:19,862 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 46 selfloop transitions, 2 changer transitions 19/71 dead transitions. [2024-11-08 17:18:19,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 348 flow [2024-11-08 17:18:19,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:18:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:18:19,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-08 17:18:19,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-08 17:18:19,864 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 116 flow. Second operand 4 states and 91 transitions. [2024-11-08 17:18:19,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 348 flow [2024-11-08 17:18:19,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 340 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-08 17:18:19,868 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 126 flow [2024-11-08 17:18:19,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-11-08 17:18:19,869 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2024-11-08 17:18:19,870 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 126 flow [2024-11-08 17:18:19,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 17:18:19,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:19,870 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:19,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:18:19,871 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:19,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1530370013, now seen corresponding path program 1 times [2024-11-08 17:18:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:19,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820909454] [2024-11-08 17:18:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:19,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:18:21,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:21,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820909454] [2024-11-08 17:18:21,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820909454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:18:21,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501289288] [2024-11-08 17:18:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:21,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:18:21,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:18:21,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:18:21,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:18:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:21,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 17:18:21,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:18:22,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 99 [2024-11-08 17:18:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:18:23,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:18:25,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:18:25,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 75 [2024-11-08 17:18:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:18:26,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501289288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:18:26,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:18:26,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2024-11-08 17:18:26,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019846931] [2024-11-08 17:18:26,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:18:26,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 17:18:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 17:18:26,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:18:26,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:18:26,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 126 flow. Second operand has 26 states, 26 states have (on average 10.153846153846153) internal successors, (264), 26 states have internal predecessors, (264), 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 17:18:26,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:26,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:18:26,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:33,204 INFO L124 PetriNetUnfolderBase]: 5576/8062 cut-off events. [2024-11-08 17:18:33,205 INFO L125 PetriNetUnfolderBase]: For 1781/1781 co-relation queries the response was YES. [2024-11-08 17:18:33,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18520 conditions, 8062 events. 5576/8062 cut-off events. For 1781/1781 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 40073 event pairs, 727 based on Foata normal form. 5/7594 useless extension candidates. Maximal degree in co-relation 18485. Up to 1742 conditions per place. [2024-11-08 17:18:33,256 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 236 selfloop transitions, 55 changer transitions 55/350 dead transitions. [2024-11-08 17:18:33,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 350 transitions, 1630 flow [2024-11-08 17:18:33,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 17:18:33,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-08 17:18:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 548 transitions. [2024-11-08 17:18:33,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.484526967285588 [2024-11-08 17:18:33,261 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 126 flow. Second operand 29 states and 548 transitions. [2024-11-08 17:18:33,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 350 transitions, 1630 flow [2024-11-08 17:18:33,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 350 transitions, 1606 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-08 17:18:33,270 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 540 flow [2024-11-08 17:18:33,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=540, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2024-11-08 17:18:33,271 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2024-11-08 17:18:33,272 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 540 flow [2024-11-08 17:18:33,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.153846153846153) internal successors, (264), 26 states have internal predecessors, (264), 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 17:18:33,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:33,273 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:33,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:18:33,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:18:33,474 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:33,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:33,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1940678399, now seen corresponding path program 2 times [2024-11-08 17:18:33,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:33,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118379344] [2024-11-08 17:18:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:33,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:18:35,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:35,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118379344] [2024-11-08 17:18:35,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118379344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:18:35,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434257005] [2024-11-08 17:18:35,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:18:35,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:18:35,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:18:35,799 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:18:35,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:18:35,964 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:18:35,964 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:18:35,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 17:18:35,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:18:37,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 81 [2024-11-08 17:18:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:18:37,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:18:39,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:18:39,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 203 treesize of output 107 [2024-11-08 17:18:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:18:40,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434257005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:18:40,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:18:40,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 31 [2024-11-08 17:18:40,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644224902] [2024-11-08 17:18:40,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:18:40,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 17:18:40,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:40,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 17:18:40,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2024-11-08 17:18:40,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:18:40,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 540 flow. Second operand has 31 states, 31 states have (on average 9.774193548387096) internal successors, (303), 31 states have internal predecessors, (303), 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 17:18:40,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:40,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:18:40,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:48,362 INFO L124 PetriNetUnfolderBase]: 7865/11445 cut-off events. [2024-11-08 17:18:48,362 INFO L125 PetriNetUnfolderBase]: For 42036/42036 co-relation queries the response was YES. [2024-11-08 17:18:48,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39835 conditions, 11445 events. 7865/11445 cut-off events. For 42036/42036 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 61698 event pairs, 1702 based on Foata normal form. 4/11449 useless extension candidates. Maximal degree in co-relation 39784. Up to 3053 conditions per place. [2024-11-08 17:18:48,465 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 193 selfloop transitions, 56 changer transitions 21/274 dead transitions. [2024-11-08 17:18:48,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 274 transitions, 2038 flow [2024-11-08 17:18:48,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 17:18:48,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-08 17:18:48,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 377 transitions. [2024-11-08 17:18:48,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42028985507246375 [2024-11-08 17:18:48,470 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 540 flow. Second operand 23 states and 377 transitions. [2024-11-08 17:18:48,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 274 transitions, 2038 flow [2024-11-08 17:18:49,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 274 transitions, 1839 flow, removed 91 selfloop flow, removed 8 redundant places. [2024-11-08 17:18:49,069 INFO L231 Difference]: Finished difference. Result has 110 places, 124 transitions, 947 flow [2024-11-08 17:18:49,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=947, PETRI_PLACES=110, PETRI_TRANSITIONS=124} [2024-11-08 17:18:49,070 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 73 predicate places. [2024-11-08 17:18:49,071 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 124 transitions, 947 flow [2024-11-08 17:18:49,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.774193548387096) internal successors, (303), 31 states have internal predecessors, (303), 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 17:18:49,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:49,071 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:49,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:18:49,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 17:18:49,274 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:49,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:49,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1525998963, now seen corresponding path program 3 times [2024-11-08 17:18:49,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:49,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419717548] [2024-11-08 17:18:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:49,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:18:50,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:50,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419717548] [2024-11-08 17:18:50,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419717548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:18:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797610284] [2024-11-08 17:18:50,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:18:50,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:18:50,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:18:50,962 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:18:50,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:18:51,136 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:18:51,136 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:18:51,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 17:18:51,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:18:52,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 40 [2024-11-08 17:18:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:18:52,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:18:53,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:18:53,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 80 [2024-11-08 17:18:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:18:53,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797610284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:18:53,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:18:53,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 28 [2024-11-08 17:18:53,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627601067] [2024-11-08 17:18:53,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:18:53,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 17:18:53,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:53,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 17:18:53,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2024-11-08 17:18:53,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:18:53,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 124 transitions, 947 flow. Second operand has 28 states, 28 states have (on average 9.892857142857142) internal successors, (277), 28 states have internal predecessors, (277), 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 17:18:53,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:53,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:18:53,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:03,178 INFO L124 PetriNetUnfolderBase]: 12699/18643 cut-off events. [2024-11-08 17:19:03,179 INFO L125 PetriNetUnfolderBase]: For 121311/121311 co-relation queries the response was YES. [2024-11-08 17:19:03,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73942 conditions, 18643 events. 12699/18643 cut-off events. For 121311/121311 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 110281 event pairs, 2929 based on Foata normal form. 3/18646 useless extension candidates. Maximal degree in co-relation 73882. Up to 4472 conditions per place. [2024-11-08 17:19:03,377 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 323 selfloop transitions, 118 changer transitions 28/473 dead transitions. [2024-11-08 17:19:03,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 473 transitions, 4064 flow [2024-11-08 17:19:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 17:19:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-08 17:19:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 432 transitions. [2024-11-08 17:19:03,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-11-08 17:19:03,382 INFO L175 Difference]: Start difference. First operand has 110 places, 124 transitions, 947 flow. Second operand 27 states and 432 transitions. [2024-11-08 17:19:03,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 473 transitions, 4064 flow [2024-11-08 17:19:04,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 473 transitions, 3876 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-11-08 17:19:04,310 INFO L231 Difference]: Finished difference. Result has 148 places, 195 transitions, 1949 flow [2024-11-08 17:19:04,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1949, PETRI_PLACES=148, PETRI_TRANSITIONS=195} [2024-11-08 17:19:04,311 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 111 predicate places. [2024-11-08 17:19:04,312 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 195 transitions, 1949 flow [2024-11-08 17:19:04,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.892857142857142) internal successors, (277), 28 states have internal predecessors, (277), 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 17:19:04,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:04,313 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:04,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:19:04,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 17:19:04,514 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:04,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:04,515 INFO L85 PathProgramCache]: Analyzing trace with hash -441379519, now seen corresponding path program 4 times [2024-11-08 17:19:04,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:04,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685559749] [2024-11-08 17:19:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:04,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:19:06,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:06,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685559749] [2024-11-08 17:19:06,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685559749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:19:06,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703774876] [2024-11-08 17:19:06,384 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:19:06,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:19:06,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:19:06,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:19:06,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:19:06,577 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:19:06,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:19:06,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 17:19:06,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:19:08,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 85 [2024-11-08 17:19:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:19:08,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:19:10,150 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:19:10,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 165 treesize of output 84 [2024-11-08 17:19:10,335 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:19:10,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703774876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:19:10,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:19:10,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2024-11-08 17:19:10,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584805748] [2024-11-08 17:19:10,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:19:10,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 17:19:10,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:10,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 17:19:10,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2024-11-08 17:19:10,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:19:10,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 195 transitions, 1949 flow. Second operand has 28 states, 28 states have (on average 9.964285714285714) internal successors, (279), 28 states have internal predecessors, (279), 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 17:19:10,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:10,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:19:10,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:22,831 INFO L124 PetriNetUnfolderBase]: 15511/23039 cut-off events. [2024-11-08 17:19:22,831 INFO L125 PetriNetUnfolderBase]: For 261075/261075 co-relation queries the response was YES. [2024-11-08 17:19:22,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109066 conditions, 23039 events. 15511/23039 cut-off events. For 261075/261075 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 144897 event pairs, 2857 based on Foata normal form. 2/23041 useless extension candidates. Maximal degree in co-relation 108989. Up to 5490 conditions per place. [2024-11-08 17:19:23,141 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 388 selfloop transitions, 188 changer transitions 12/592 dead transitions. [2024-11-08 17:19:23,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 592 transitions, 7506 flow [2024-11-08 17:19:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 17:19:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-08 17:19:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 497 transitions. [2024-11-08 17:19:23,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4247863247863248 [2024-11-08 17:19:23,146 INFO L175 Difference]: Start difference. First operand has 148 places, 195 transitions, 1949 flow. Second operand 30 states and 497 transitions. [2024-11-08 17:19:23,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 592 transitions, 7506 flow [2024-11-08 17:19:26,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 592 transitions, 6259 flow, removed 605 selfloop flow, removed 5 redundant places. [2024-11-08 17:19:26,943 INFO L231 Difference]: Finished difference. Result has 188 places, 312 transitions, 4049 flow [2024-11-08 17:19:26,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4049, PETRI_PLACES=188, PETRI_TRANSITIONS=312} [2024-11-08 17:19:26,945 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 151 predicate places. [2024-11-08 17:19:26,945 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 312 transitions, 4049 flow [2024-11-08 17:19:26,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.964285714285714) internal successors, (279), 28 states have internal predecessors, (279), 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 17:19:26,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:26,946 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:26,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 17:19:27,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 17:19:27,151 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:27,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1858938263, now seen corresponding path program 5 times [2024-11-08 17:19:27,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:27,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733499741] [2024-11-08 17:19:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:27,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:19:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:29,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733499741] [2024-11-08 17:19:29,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733499741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:19:29,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842827467] [2024-11-08 17:19:29,284 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:19:29,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:19:29,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:19:29,286 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:19:29,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:19:29,478 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 17:19:29,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:19:29,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 17:19:29,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:19:30,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 90 [2024-11-08 17:19:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:19:30,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:19:31,852 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:19:31,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 70 [2024-11-08 17:19:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:19:32,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842827467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:19:32,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:19:32,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 29 [2024-11-08 17:19:32,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726853550] [2024-11-08 17:19:32,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:19:32,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 17:19:32,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:32,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 17:19:32,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:19:32,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:19:32,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 312 transitions, 4049 flow. Second operand has 29 states, 29 states have (on average 9.862068965517242) internal successors, (286), 29 states have internal predecessors, (286), 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 17:19:32,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:32,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:19:32,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:53,034 INFO L124 PetriNetUnfolderBase]: 22798/33987 cut-off events. [2024-11-08 17:19:53,034 INFO L125 PetriNetUnfolderBase]: For 503771/503771 co-relation queries the response was YES. [2024-11-08 17:19:53,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176105 conditions, 33987 events. 22798/33987 cut-off events. For 503771/503771 co-relation queries the response was YES. Maximal size of possible extension queue 1235. Compared 227790 event pairs, 3556 based on Foata normal form. 16/34003 useless extension candidates. Maximal degree in co-relation 176012. Up to 8558 conditions per place. [2024-11-08 17:19:53,542 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 658 selfloop transitions, 367 changer transitions 88/1117 dead transitions. [2024-11-08 17:19:53,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 1117 transitions, 15902 flow [2024-11-08 17:19:53,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-08 17:19:53,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-08 17:19:53,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 953 transitions. [2024-11-08 17:19:53,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4442890442890443 [2024-11-08 17:19:53,550 INFO L175 Difference]: Start difference. First operand has 188 places, 312 transitions, 4049 flow. Second operand 55 states and 953 transitions. [2024-11-08 17:19:53,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 1117 transitions, 15902 flow [2024-11-08 17:20:05,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 1117 transitions, 13837 flow, removed 1031 selfloop flow, removed 2 redundant places. [2024-11-08 17:20:05,330 INFO L231 Difference]: Finished difference. Result has 277 places, 561 transitions, 8316 flow [2024-11-08 17:20:05,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=8316, PETRI_PLACES=277, PETRI_TRANSITIONS=561} [2024-11-08 17:20:05,331 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 240 predicate places. [2024-11-08 17:20:05,331 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 561 transitions, 8316 flow [2024-11-08 17:20:05,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.862068965517242) internal successors, (286), 29 states have internal predecessors, (286), 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 17:20:05,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:20:05,332 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:20:05,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:20:05,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:05,533 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:20:05,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:20:05,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1338051723, now seen corresponding path program 6 times [2024-11-08 17:20:05,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:20:05,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806427731] [2024-11-08 17:20:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:20:05,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:20:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:20:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:20:06,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:20:06,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806427731] [2024-11-08 17:20:06,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806427731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:20:06,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865384175] [2024-11-08 17:20:06,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:20:06,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:20:06,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:20:06,853 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:20:06,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce6101-fd0d-4beb-9baa-e68a701aefdb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:20:07,015 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-08 17:20:07,015 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:20:07,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 17:20:07,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:20:07,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 85 [2024-11-08 17:20:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:20:08,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:20:09,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:20:09,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 80 [2024-11-08 17:20:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:20:09,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865384175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:20:09,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:20:09,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 29 [2024-11-08 17:20:09,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124695446] [2024-11-08 17:20:09,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:20:09,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 17:20:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:20:09,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 17:20:09,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:20:09,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:20:09,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 561 transitions, 8316 flow. Second operand has 29 states, 29 states have (on average 9.827586206896552) internal successors, (285), 29 states have internal predecessors, (285), 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 17:20:09,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:20:09,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:20:09,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:20:44,715 INFO L124 PetriNetUnfolderBase]: 40663/61416 cut-off events. [2024-11-08 17:20:44,715 INFO L125 PetriNetUnfolderBase]: For 2368850/2368850 co-relation queries the response was YES. [2024-11-08 17:20:45,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467849 conditions, 61416 events. 40663/61416 cut-off events. For 2368850/2368850 co-relation queries the response was YES. Maximal size of possible extension queue 2304. Compared 453726 event pairs, 5157 based on Foata normal form. 34/61450 useless extension candidates. Maximal degree in co-relation 467718. Up to 12883 conditions per place. [2024-11-08 17:20:45,588 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 940 selfloop transitions, 742 changer transitions 144/1830 dead transitions. [2024-11-08 17:20:45,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1830 transitions, 30204 flow [2024-11-08 17:20:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-08 17:20:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-11-08 17:20:45,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 1329 transitions. [2024-11-08 17:20:45,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4483805668016194 [2024-11-08 17:20:45,592 INFO L175 Difference]: Start difference. First operand has 277 places, 561 transitions, 8316 flow. Second operand 76 states and 1329 transitions. [2024-11-08 17:20:45,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1830 transitions, 30204 flow