./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/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_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/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_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:50:15,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:50:15,958 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:50:15,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:50:15,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:50:16,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:50:16,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:50:16,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:50:16,043 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:50:16,044 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:50:16,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:50:16,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:50:16,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:50:16,047 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:50:16,050 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:50:16,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:50:16,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:50:16,052 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:50:16,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:50:16,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:50:16,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:50:16,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:50:16,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:50:16,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:50:16,060 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:50:16,061 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:50:16,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:50:16,070 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:50:16,071 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:50:16,072 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:50:16,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:50:16,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:50:16,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:50:16,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:50:16,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:50:16,075 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:50:16,076 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:50:16,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:50:16,076 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:50:16,077 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:50:16,077 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:50:16,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:50:16,078 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_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2024-11-08 18:50:16,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:50:16,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:50:16,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:50:16,464 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:50:16,466 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:50:16,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread/triangular-longer-2.i Unable to find full path for "g++" [2024-11-08 18:50:18,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:50:19,279 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:50:19,280 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/sv-benchmarks/c/pthread/triangular-longer-2.i [2024-11-08 18:50:19,304 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/data/5ac2da962/c0095c5136034ef2869f03bfa2a53638/FLAGf1a9a9ff0 [2024-11-08 18:50:19,524 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/data/5ac2da962/c0095c5136034ef2869f03bfa2a53638 [2024-11-08 18:50:19,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:50:19,529 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:50:19,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:50:19,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:50:19,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:50:19,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:50:19" (1/1) ... [2024-11-08 18:50:19,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2048bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:19, skipping insertion in model container [2024-11-08 18:50:19,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:50:19" (1/1) ... [2024-11-08 18:50:19,605 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:50:20,246 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_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/sv-benchmarks/c/pthread/triangular-longer-2.i[30963,30976] [2024-11-08 18:50:20,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:50:20,265 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:50:20,333 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_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/sv-benchmarks/c/pthread/triangular-longer-2.i[30963,30976] [2024-11-08 18:50:20,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:50:20,392 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:50:20,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20 WrapperNode [2024-11-08 18:50:20,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:50:20,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:50:20,396 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:50:20,396 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:50:20,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (1/1) ... [2024-11-08 18:50:20,428 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (1/1) ... [2024-11-08 18:50:20,459 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-08 18:50:20,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:50:20,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:50:20,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:50:20,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:50:20,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (1/1) ... [2024-11-08 18:50:20,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (1/1) ... [2024-11-08 18:50:20,484 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (1/1) ... [2024-11-08 18:50:20,519 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:50:20,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (1/1) ... [2024-11-08 18:50:20,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (1/1) ... [2024-11-08 18:50:20,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (1/1) ... [2024-11-08 18:50:20,533 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (1/1) ... [2024-11-08 18:50:20,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (1/1) ... [2024-11-08 18:50:20,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (1/1) ... [2024-11-08 18:50:20,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:50:20,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:50:20,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:50:20,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:50:20,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (1/1) ... [2024-11-08 18:50:20,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:50:20,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:20,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:50:20,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:50:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-08 18:50:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-08 18:50:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-08 18:50:20,655 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-08 18:50:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 18:50:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:50:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:50:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 18:50:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:50:20,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:50:20,659 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 18:50:20,876 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:50:20,879 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:50:21,107 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:50:21,107 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:50:21,243 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:50:21,244 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:50:21,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:50:21 BoogieIcfgContainer [2024-11-08 18:50:21,245 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:50:21,248 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:50:21,248 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:50:21,253 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:50:21,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:50:19" (1/3) ... [2024-11-08 18:50:21,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc5e430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:50:21, skipping insertion in model container [2024-11-08 18:50:21,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:20" (2/3) ... [2024-11-08 18:50:21,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc5e430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:50:21, skipping insertion in model container [2024-11-08 18:50:21,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:50:21" (3/3) ... [2024-11-08 18:50:21,258 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2024-11-08 18:50:21,285 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:50:21,286 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:50:21,286 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:50:21,379 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 18:50:21,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 68 flow [2024-11-08 18:50:21,496 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-11-08 18:50:21,497 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:50:21,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 5/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-11-08 18:50:21,502 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 30 transitions, 68 flow [2024-11-08 18:50:21,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 28 transitions, 62 flow [2024-11-08 18:50:21,519 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:50:21,528 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;@1b684b8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:50:21,529 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-08 18:50:21,544 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:50:21,544 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2024-11-08 18:50:21,545 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:50:21,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:21,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:21,547 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:50:21,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:21,554 INFO L85 PathProgramCache]: Analyzing trace with hash 859957057, now seen corresponding path program 1 times [2024-11-08 18:50:21,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:21,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949354098] [2024-11-08 18:50:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:21,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:22,238 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 18:50:22,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:22,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949354098] [2024-11-08 18:50:22,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949354098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:22,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:22,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:50:22,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744157208] [2024-11-08 18:50:22,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:22,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:50:22,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:22,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:50:22,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:50:22,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:50:22,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 18:50:22,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:22,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:50:22,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:22,965 INFO L124 PetriNetUnfolderBase]: 419/747 cut-off events. [2024-11-08 18:50:22,966 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-08 18:50:22,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1361 conditions, 747 events. 419/747 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3662 event pairs, 54 based on Foata normal form. 15/665 useless extension candidates. Maximal degree in co-relation 1351. Up to 303 conditions per place. [2024-11-08 18:50:22,988 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2024-11-08 18:50:22,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 76 transitions, 295 flow [2024-11-08 18:50:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:50:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 18:50:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-11-08 18:50:23,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-11-08 18:50:23,005 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 62 flow. Second operand 8 states and 159 transitions. [2024-11-08 18:50:23,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 76 transitions, 295 flow [2024-11-08 18:50:23,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 76 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:50:23,014 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 171 flow [2024-11-08 18:50:23,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=171, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2024-11-08 18:50:23,022 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-11-08 18:50:23,022 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 171 flow [2024-11-08 18:50:23,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 18:50:23,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:23,023 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:23,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:50:23,024 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:50:23,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1657784786, now seen corresponding path program 1 times [2024-11-08 18:50:23,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:23,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327124314] [2024-11-08 18:50:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:23,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:23,376 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 18:50:23,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:23,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327124314] [2024-11-08 18:50:23,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327124314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:23,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:23,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:50:23,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027863103] [2024-11-08 18:50:23,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:23,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:50:23,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:23,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:50:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:50:23,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:50:23,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 18:50:23,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:23,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:50:23,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:23,858 INFO L124 PetriNetUnfolderBase]: 516/940 cut-off events. [2024-11-08 18:50:23,859 INFO L125 PetriNetUnfolderBase]: For 727/750 co-relation queries the response was YES. [2024-11-08 18:50:23,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 940 events. 516/940 cut-off events. For 727/750 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4948 event pairs, 90 based on Foata normal form. 24/840 useless extension candidates. Maximal degree in co-relation 2267. Up to 232 conditions per place. [2024-11-08 18:50:23,909 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 48 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2024-11-08 18:50:23,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 77 transitions, 429 flow [2024-11-08 18:50:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:50:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:50:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-11-08 18:50:23,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6611111111111111 [2024-11-08 18:50:23,915 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 171 flow. Second operand 6 states and 119 transitions. [2024-11-08 18:50:23,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 77 transitions, 429 flow [2024-11-08 18:50:23,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 429 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:50:23,933 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 307 flow [2024-11-08 18:50:23,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2024-11-08 18:50:23,935 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-11-08 18:50:23,935 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 307 flow [2024-11-08 18:50:23,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 18:50:23,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:23,936 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:23,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:50:23,937 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:50:23,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:23,938 INFO L85 PathProgramCache]: Analyzing trace with hash -935468940, now seen corresponding path program 1 times [2024-11-08 18:50:23,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:23,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103806381] [2024-11-08 18:50:23,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:23,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:24,187 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 18:50:24,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:24,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103806381] [2024-11-08 18:50:24,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103806381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:24,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:24,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:50:24,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082074016] [2024-11-08 18:50:24,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:24,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:50:24,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:24,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:50:24,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:50:24,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:50:24,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 18:50:24,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:24,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:50:24,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:24,793 INFO L124 PetriNetUnfolderBase]: 857/1548 cut-off events. [2024-11-08 18:50:24,794 INFO L125 PetriNetUnfolderBase]: For 3115/3142 co-relation queries the response was YES. [2024-11-08 18:50:24,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4522 conditions, 1548 events. 857/1548 cut-off events. For 3115/3142 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8604 event pairs, 135 based on Foata normal form. 33/1387 useless extension candidates. Maximal degree in co-relation 4499. Up to 438 conditions per place. [2024-11-08 18:50:24,818 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 84 selfloop transitions, 39 changer transitions 0/132 dead transitions. [2024-11-08 18:50:24,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 132 transitions, 961 flow [2024-11-08 18:50:24,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:50:24,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 18:50:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-11-08 18:50:24,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.67 [2024-11-08 18:50:24,822 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 307 flow. Second operand 10 states and 201 transitions. [2024-11-08 18:50:24,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 132 transitions, 961 flow [2024-11-08 18:50:24,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 132 transitions, 947 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-08 18:50:24,856 INFO L231 Difference]: Finished difference. Result has 67 places, 82 transitions, 715 flow [2024-11-08 18:50:24,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=715, PETRI_PLACES=67, PETRI_TRANSITIONS=82} [2024-11-08 18:50:24,858 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-11-08 18:50:24,858 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 82 transitions, 715 flow [2024-11-08 18:50:24,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 18:50:24,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:24,859 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:24,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:50:24,860 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:50:24,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:24,862 INFO L85 PathProgramCache]: Analyzing trace with hash 488341566, now seen corresponding path program 2 times [2024-11-08 18:50:24,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:24,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993459483] [2024-11-08 18:50:24,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:24,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:25,101 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 18:50:25,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:25,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993459483] [2024-11-08 18:50:25,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993459483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:25,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:25,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:50:25,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224787461] [2024-11-08 18:50:25,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:25,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:50:25,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:25,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:50:25,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:50:25,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:50:25,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 82 transitions, 715 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 18:50:25,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:25,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:50:25,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:25,672 INFO L124 PetriNetUnfolderBase]: 877/1574 cut-off events. [2024-11-08 18:50:25,672 INFO L125 PetriNetUnfolderBase]: For 6588/6633 co-relation queries the response was YES. [2024-11-08 18:50:25,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5517 conditions, 1574 events. 877/1574 cut-off events. For 6588/6633 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8701 event pairs, 123 based on Foata normal form. 63/1438 useless extension candidates. Maximal degree in co-relation 5485. Up to 366 conditions per place. [2024-11-08 18:50:25,693 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 88 selfloop transitions, 40 changer transitions 0/137 dead transitions. [2024-11-08 18:50:25,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 137 transitions, 1291 flow [2024-11-08 18:50:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:50:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 18:50:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-11-08 18:50:25,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2024-11-08 18:50:25,696 INFO L175 Difference]: Start difference. First operand has 67 places, 82 transitions, 715 flow. Second operand 8 states and 161 transitions. [2024-11-08 18:50:25,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 137 transitions, 1291 flow [2024-11-08 18:50:25,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 137 transitions, 1215 flow, removed 38 selfloop flow, removed 0 redundant places. [2024-11-08 18:50:25,757 INFO L231 Difference]: Finished difference. Result has 79 places, 92 transitions, 931 flow [2024-11-08 18:50:25,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=931, PETRI_PLACES=79, PETRI_TRANSITIONS=92} [2024-11-08 18:50:25,758 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-11-08 18:50:25,758 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 92 transitions, 931 flow [2024-11-08 18:50:25,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 18:50:25,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:25,759 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:25,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:50:25,761 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:50:25,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:25,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1239366807, now seen corresponding path program 1 times [2024-11-08 18:50:25,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:25,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152113903] [2024-11-08 18:50:25,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:25,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:26,022 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 18:50:26,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:26,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152113903] [2024-11-08 18:50:26,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152113903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:26,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:26,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:50:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508610138] [2024-11-08 18:50:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:26,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:50:26,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:26,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:50:26,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:50:26,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:50:26,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 92 transitions, 931 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 18:50:26,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:26,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:50:26,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:26,785 INFO L124 PetriNetUnfolderBase]: 1169/2112 cut-off events. [2024-11-08 18:50:26,786 INFO L125 PetriNetUnfolderBase]: For 11920/11976 co-relation queries the response was YES. [2024-11-08 18:50:26,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7829 conditions, 2112 events. 1169/2112 cut-off events. For 11920/11976 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12223 event pairs, 159 based on Foata normal form. 35/1865 useless extension candidates. Maximal degree in co-relation 7790. Up to 559 conditions per place. [2024-11-08 18:50:26,816 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 120 selfloop transitions, 54 changer transitions 0/183 dead transitions. [2024-11-08 18:50:26,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 183 transitions, 1854 flow [2024-11-08 18:50:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:50:26,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 18:50:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-11-08 18:50:26,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-11-08 18:50:26,819 INFO L175 Difference]: Start difference. First operand has 79 places, 92 transitions, 931 flow. Second operand 12 states and 231 transitions. [2024-11-08 18:50:26,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 183 transitions, 1854 flow [2024-11-08 18:50:26,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 183 transitions, 1816 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-08 18:50:26,881 INFO L231 Difference]: Finished difference. Result has 96 places, 112 transitions, 1330 flow [2024-11-08 18:50:26,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1330, PETRI_PLACES=96, PETRI_TRANSITIONS=112} [2024-11-08 18:50:26,884 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-11-08 18:50:26,886 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 112 transitions, 1330 flow [2024-11-08 18:50:26,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 18:50:26,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:26,887 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:26,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:50:26,887 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:50:26,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash -199252329, now seen corresponding path program 2 times [2024-11-08 18:50:26,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:26,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350291054] [2024-11-08 18:50:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:26,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:27,099 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 18:50:27,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:27,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350291054] [2024-11-08 18:50:27,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350291054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:27,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:27,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:50:27,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312869476] [2024-11-08 18:50:27,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:27,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:50:27,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:27,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:50:27,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:50:27,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:50:27,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 112 transitions, 1330 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 18:50:27,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:27,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:50:27,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:27,985 INFO L124 PetriNetUnfolderBase]: 1557/2800 cut-off events. [2024-11-08 18:50:27,985 INFO L125 PetriNetUnfolderBase]: For 26518/26592 co-relation queries the response was YES. [2024-11-08 18:50:28,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12298 conditions, 2800 events. 1557/2800 cut-off events. For 26518/26592 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16900 event pairs, 89 based on Foata normal form. 47/2496 useless extension candidates. Maximal degree in co-relation 12251. Up to 411 conditions per place. [2024-11-08 18:50:28,027 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 123 selfloop transitions, 84 changer transitions 0/216 dead transitions. [2024-11-08 18:50:28,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 216 transitions, 2673 flow [2024-11-08 18:50:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:50:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 18:50:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 258 transitions. [2024-11-08 18:50:28,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6615384615384615 [2024-11-08 18:50:28,031 INFO L175 Difference]: Start difference. First operand has 96 places, 112 transitions, 1330 flow. Second operand 13 states and 258 transitions. [2024-11-08 18:50:28,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 216 transitions, 2673 flow [2024-11-08 18:50:28,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 216 transitions, 2545 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-11-08 18:50:28,216 INFO L231 Difference]: Finished difference. Result has 113 places, 137 transitions, 1956 flow [2024-11-08 18:50:28,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1956, PETRI_PLACES=113, PETRI_TRANSITIONS=137} [2024-11-08 18:50:28,220 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-11-08 18:50:28,220 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 137 transitions, 1956 flow [2024-11-08 18:50:28,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 18:50:28,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:28,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:28,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:50:28,222 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:50:28,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:28,222 INFO L85 PathProgramCache]: Analyzing trace with hash -166184319, now seen corresponding path program 3 times [2024-11-08 18:50:28,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:28,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890184510] [2024-11-08 18:50:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:28,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:28,473 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 18:50:28,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:28,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890184510] [2024-11-08 18:50:28,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890184510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:28,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:28,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:50:28,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888079227] [2024-11-08 18:50:28,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:28,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:50:28,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:28,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:50:28,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:50:28,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:50:28,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 137 transitions, 1956 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 18:50:28,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:28,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:50:28,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:29,533 INFO L124 PetriNetUnfolderBase]: 1632/2938 cut-off events. [2024-11-08 18:50:29,533 INFO L125 PetriNetUnfolderBase]: For 39697/39801 co-relation queries the response was YES. [2024-11-08 18:50:29,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14172 conditions, 2938 events. 1632/2938 cut-off events. For 39697/39801 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 17965 event pairs, 77 based on Foata normal form. 77/2640 useless extension candidates. Maximal degree in co-relation 14116. Up to 432 conditions per place. [2024-11-08 18:50:29,577 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 126 selfloop transitions, 89 changer transitions 0/224 dead transitions. [2024-11-08 18:50:29,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 224 transitions, 3226 flow [2024-11-08 18:50:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:50:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 18:50:29,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 233 transitions. [2024-11-08 18:50:29,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6472222222222223 [2024-11-08 18:50:29,582 INFO L175 Difference]: Start difference. First operand has 113 places, 137 transitions, 1956 flow. Second operand 12 states and 233 transitions. [2024-11-08 18:50:29,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 224 transitions, 3226 flow [2024-11-08 18:50:29,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 224 transitions, 3020 flow, removed 84 selfloop flow, removed 4 redundant places. [2024-11-08 18:50:29,840 INFO L231 Difference]: Finished difference. Result has 126 places, 149 transitions, 2317 flow [2024-11-08 18:50:29,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2317, PETRI_PLACES=126, PETRI_TRANSITIONS=149} [2024-11-08 18:50:29,844 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-11-08 18:50:29,844 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 149 transitions, 2317 flow [2024-11-08 18:50:29,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 18:50:29,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:29,845 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:29,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:50:29,846 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:50:29,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:29,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2005722259, now seen corresponding path program 1 times [2024-11-08 18:50:29,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:29,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883208586] [2024-11-08 18:50:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:29,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:30,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:30,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883208586] [2024-11-08 18:50:30,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883208586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:30,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434288756] [2024-11-08 18:50:30,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:30,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:30,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:30,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:30,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:50:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:30,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 18:50:30,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:30,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:50:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:30,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434288756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:50:30,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:50:30,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-08 18:50:30,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483854653] [2024-11-08 18:50:30,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:50:30,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 18:50:30,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:30,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 18:50:30,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:50:30,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:50:30,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 149 transitions, 2317 flow. Second operand has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 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 18:50:30,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:30,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:50:30,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:32,812 INFO L124 PetriNetUnfolderBase]: 2422/4397 cut-off events. [2024-11-08 18:50:32,812 INFO L125 PetriNetUnfolderBase]: For 79692/79860 co-relation queries the response was YES. [2024-11-08 18:50:32,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22765 conditions, 4397 events. 2422/4397 cut-off events. For 79692/79860 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 26416 event pairs, 325 based on Foata normal form. 131/3926 useless extension candidates. Maximal degree in co-relation 22703. Up to 1248 conditions per place. [2024-11-08 18:50:32,887 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 216 selfloop transitions, 106 changer transitions 0/331 dead transitions. [2024-11-08 18:50:32,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 331 transitions, 5167 flow [2024-11-08 18:50:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 18:50:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-08 18:50:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 447 transitions. [2024-11-08 18:50:32,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6478260869565218 [2024-11-08 18:50:32,891 INFO L175 Difference]: Start difference. First operand has 126 places, 149 transitions, 2317 flow. Second operand 23 states and 447 transitions. [2024-11-08 18:50:32,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 331 transitions, 5167 flow [2024-11-08 18:50:33,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 331 transitions, 4787 flow, removed 162 selfloop flow, removed 5 redundant places. [2024-11-08 18:50:33,244 INFO L231 Difference]: Finished difference. Result has 158 places, 196 transitions, 3463 flow [2024-11-08 18:50:33,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3463, PETRI_PLACES=158, PETRI_TRANSITIONS=196} [2024-11-08 18:50:33,276 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-11-08 18:50:33,276 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 196 transitions, 3463 flow [2024-11-08 18:50:33,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 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 18:50:33,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:33,277 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:33,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:50:33,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:33,482 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:50:33,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:33,483 INFO L85 PathProgramCache]: Analyzing trace with hash 846626555, now seen corresponding path program 2 times [2024-11-08 18:50:33,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:33,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805179746] [2024-11-08 18:50:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:33,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:33,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:33,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805179746] [2024-11-08 18:50:33,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805179746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:33,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513267004] [2024-11-08 18:50:33,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:50:33,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:33,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:33,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:33,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:50:33,755 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:50:33,755 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:50:33,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 18:50:33,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:33,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:50:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:34,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513267004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:50:34,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:50:34,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-08 18:50:34,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620173905] [2024-11-08 18:50:34,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:50:34,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 18:50:34,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 18:50:34,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:50:34,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:50:34,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 196 transitions, 3463 flow. Second operand has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 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 18:50:34,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:34,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:50:34,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:36,928 INFO L124 PetriNetUnfolderBase]: 3587/6528 cut-off events. [2024-11-08 18:50:36,928 INFO L125 PetriNetUnfolderBase]: For 197173/197422 co-relation queries the response was YES. [2024-11-08 18:50:36,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39737 conditions, 6528 events. 3587/6528 cut-off events. For 197173/197422 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 42306 event pairs, 118 based on Foata normal form. 128/5783 useless extension candidates. Maximal degree in co-relation 39660. Up to 843 conditions per place. [2024-11-08 18:50:37,032 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 273 selfloop transitions, 193 changer transitions 0/475 dead transitions. [2024-11-08 18:50:37,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 475 transitions, 8805 flow [2024-11-08 18:50:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 18:50:37,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-08 18:50:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 612 transitions. [2024-11-08 18:50:37,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-11-08 18:50:37,036 INFO L175 Difference]: Start difference. First operand has 158 places, 196 transitions, 3463 flow. Second operand 32 states and 612 transitions. [2024-11-08 18:50:37,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 475 transitions, 8805 flow [2024-11-08 18:50:37,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 475 transitions, 8288 flow, removed 228 selfloop flow, removed 7 redundant places. [2024-11-08 18:50:37,907 INFO L231 Difference]: Finished difference. Result has 207 places, 267 transitions, 5699 flow [2024-11-08 18:50:37,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3082, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=5699, PETRI_PLACES=207, PETRI_TRANSITIONS=267} [2024-11-08 18:50:37,909 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-11-08 18:50:37,909 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 267 transitions, 5699 flow [2024-11-08 18:50:37,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 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 18:50:37,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:37,910 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:37,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:50:38,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:38,115 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:50:38,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:38,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1696680779, now seen corresponding path program 1 times [2024-11-08 18:50:38,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:38,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499346578] [2024-11-08 18:50:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:38,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:38,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:38,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:38,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499346578] [2024-11-08 18:50:38,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499346578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677896208] [2024-11-08 18:50:38,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:38,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:38,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:38,426 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:38,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:50:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:38,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 18:50:38,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:38,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:50:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:39,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677896208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:50:39,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:50:39,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-08 18:50:39,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974333262] [2024-11-08 18:50:39,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:50:39,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 18:50:39,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 18:50:39,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:50:39,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:50:39,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 267 transitions, 5699 flow. Second operand has 16 states, 16 states have (on average 13.4375) internal successors, (215), 16 states have internal predecessors, (215), 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 18:50:39,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:39,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:50:39,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:43,076 INFO L124 PetriNetUnfolderBase]: 5227/9569 cut-off events. [2024-11-08 18:50:43,076 INFO L125 PetriNetUnfolderBase]: For 539193/539633 co-relation queries the response was YES. [2024-11-08 18:50:43,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71396 conditions, 9569 events. 5227/9569 cut-off events. For 539193/539633 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 65147 event pairs, 477 based on Foata normal form. 185/8421 useless extension candidates. Maximal degree in co-relation 71293. Up to 1549 conditions per place. [2024-11-08 18:50:43,245 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 367 selfloop transitions, 208 changer transitions 2/586 dead transitions. [2024-11-08 18:50:43,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 586 transitions, 13855 flow [2024-11-08 18:50:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 18:50:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-08 18:50:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 535 transitions. [2024-11-08 18:50:43,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6369047619047619 [2024-11-08 18:50:43,251 INFO L175 Difference]: Start difference. First operand has 207 places, 267 transitions, 5699 flow. Second operand 28 states and 535 transitions. [2024-11-08 18:50:43,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 586 transitions, 13855 flow [2024-11-08 18:50:45,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 586 transitions, 12331 flow, removed 736 selfloop flow, removed 7 redundant places. [2024-11-08 18:50:45,444 INFO L231 Difference]: Finished difference. Result has 248 places, 343 transitions, 7882 flow [2024-11-08 18:50:45,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=4807, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7882, PETRI_PLACES=248, PETRI_TRANSITIONS=343} [2024-11-08 18:50:45,446 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-11-08 18:50:45,446 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 343 transitions, 7882 flow [2024-11-08 18:50:45,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.4375) internal successors, (215), 16 states have internal predecessors, (215), 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 18:50:45,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:45,447 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:45,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 18:50:45,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 18:50:45,649 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:50:45,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:45,650 INFO L85 PathProgramCache]: Analyzing trace with hash -93216237, now seen corresponding path program 2 times [2024-11-08 18:50:45,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:45,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268800805] [2024-11-08 18:50:45,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:45,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:45,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268800805] [2024-11-08 18:50:45,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268800805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:45,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322054575] [2024-11-08 18:50:45,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:50:45,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:45,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:45,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:45,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:50:45,989 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:50:45,990 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:50:45,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:50:45,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:46,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:50:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:46,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322054575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:50:46,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:50:46,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-08 18:50:46,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506472239] [2024-11-08 18:50:46,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:50:46,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 18:50:46,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:46,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 18:50:46,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:50:46,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:50:46,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 343 transitions, 7882 flow. Second operand has 16 states, 16 states have (on average 13.125) internal successors, (210), 16 states have internal predecessors, (210), 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 18:50:46,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:46,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:50:46,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:51,440 INFO L124 PetriNetUnfolderBase]: 6826/12590 cut-off events. [2024-11-08 18:50:51,441 INFO L125 PetriNetUnfolderBase]: For 1014941/1015508 co-relation queries the response was YES. [2024-11-08 18:50:51,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103199 conditions, 12590 events. 6826/12590 cut-off events. For 1014941/1015508 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 90994 event pairs, 396 based on Foata normal form. 237/11024 useless extension candidates. Maximal degree in co-relation 103076. Up to 1668 conditions per place. [2024-11-08 18:50:51,682 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 375 selfloop transitions, 331 changer transitions 0/715 dead transitions. [2024-11-08 18:50:51,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 715 transitions, 18426 flow [2024-11-08 18:50:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 18:50:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-08 18:50:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 644 transitions. [2024-11-08 18:50:51,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6313725490196078 [2024-11-08 18:50:51,687 INFO L175 Difference]: Start difference. First operand has 248 places, 343 transitions, 7882 flow. Second operand 34 states and 644 transitions. [2024-11-08 18:50:51,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 715 transitions, 18426 flow [2024-11-08 18:50:55,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 715 transitions, 17015 flow, removed 691 selfloop flow, removed 3 redundant places. [2024-11-08 18:50:55,117 INFO L231 Difference]: Finished difference. Result has 299 places, 438 transitions, 11516 flow [2024-11-08 18:50:55,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=6891, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=11516, PETRI_PLACES=299, PETRI_TRANSITIONS=438} [2024-11-08 18:50:55,118 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-11-08 18:50:55,119 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 438 transitions, 11516 flow [2024-11-08 18:50:55,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.125) internal successors, (210), 16 states have internal predecessors, (210), 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 18:50:55,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:55,119 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:55,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:50:55,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 18:50:55,320 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:50:55,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:55,321 INFO L85 PathProgramCache]: Analyzing trace with hash 134150425, now seen corresponding path program 3 times [2024-11-08 18:50:55,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:55,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991594274] [2024-11-08 18:50:55,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:55,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:55,560 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 18:50:55,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:55,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991594274] [2024-11-08 18:50:55,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991594274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:55,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076605540] [2024-11-08 18:50:55,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:50:55,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:55,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:55,563 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:55,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:50:55,633 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 18:50:55,634 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:50:55,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 18:50:55,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:55,700 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 18:50:55,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:50:55,851 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 18:50:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076605540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:50:55,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:50:55,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-08 18:50:55,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808300439] [2024-11-08 18:50:55,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:50:55,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 18:50:55,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:55,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 18:50:55,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:50:55,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:50:55,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 438 transitions, 11516 flow. Second operand has 18 states, 18 states have (on average 13.055555555555555) internal successors, (235), 18 states have internal predecessors, (235), 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 18:50:55,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:55,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:50:55,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:02,665 INFO L124 PetriNetUnfolderBase]: 8712/15886 cut-off events. [2024-11-08 18:51:02,665 INFO L125 PetriNetUnfolderBase]: For 1991827/1992438 co-relation queries the response was YES. [2024-11-08 18:51:03,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154358 conditions, 15886 events. 8712/15886 cut-off events. For 1991827/1992438 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 115803 event pairs, 86 based on Foata normal form. 169/13962 useless extension candidates. Maximal degree in co-relation 154213. Up to 2199 conditions per place. [2024-11-08 18:51:03,217 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 455 selfloop transitions, 429 changer transitions 0/893 dead transitions. [2024-11-08 18:51:03,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 893 transitions, 26912 flow [2024-11-08 18:51:03,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-08 18:51:03,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-08 18:51:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 779 transitions. [2024-11-08 18:51:03,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-08 18:51:03,221 INFO L175 Difference]: Start difference. First operand has 299 places, 438 transitions, 11516 flow. Second operand 41 states and 779 transitions. [2024-11-08 18:51:03,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 893 transitions, 26912 flow [2024-11-08 18:51:12,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 893 transitions, 23815 flow, removed 1421 selfloop flow, removed 16 redundant places. [2024-11-08 18:51:12,154 INFO L231 Difference]: Finished difference. Result has 348 places, 529 transitions, 14812 flow [2024-11-08 18:51:12,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=9441, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=14812, PETRI_PLACES=348, PETRI_TRANSITIONS=529} [2024-11-08 18:51:12,155 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-11-08 18:51:12,155 INFO L471 AbstractCegarLoop]: Abstraction has has 348 places, 529 transitions, 14812 flow [2024-11-08 18:51:12,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.055555555555555) internal successors, (235), 18 states have internal predecessors, (235), 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 18:51:12,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:12,156 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:12,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:51:12,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 18:51:12,357 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:51:12,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:12,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1431862477, now seen corresponding path program 4 times [2024-11-08 18:51:12,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:12,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953647104] [2024-11-08 18:51:12,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:12,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:12,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:12,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953647104] [2024-11-08 18:51:12,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953647104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:12,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398994336] [2024-11-08 18:51:12,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:51:12,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:12,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:12,643 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:12,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:51:12,716 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:51:12,716 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:51:12,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 18:51:12,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:12,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:51:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:13,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398994336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:51:13,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:51:13,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-08 18:51:13,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900422257] [2024-11-08 18:51:13,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:51:13,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 18:51:13,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:13,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 18:51:13,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2024-11-08 18:51:13,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:51:13,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 529 transitions, 14812 flow. Second operand has 26 states, 26 states have (on average 13.038461538461538) internal successors, (339), 26 states have internal predecessors, (339), 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 18:51:13,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:13,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:51:13,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:27,752 INFO L124 PetriNetUnfolderBase]: 14221/26429 cut-off events. [2024-11-08 18:51:27,752 INFO L125 PetriNetUnfolderBase]: For 4883530/4884060 co-relation queries the response was YES. [2024-11-08 18:51:28,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290495 conditions, 26429 events. 14221/26429 cut-off events. For 4883530/4884060 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 198473 event pairs, 173 based on Foata normal form. 173/22723 useless extension candidates. Maximal degree in co-relation 290330. Up to 3882 conditions per place. [2024-11-08 18:51:28,968 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 683 selfloop transitions, 556 changer transitions 0/1248 dead transitions. [2024-11-08 18:51:28,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 1248 transitions, 42188 flow [2024-11-08 18:51:28,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-08 18:51:28,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-08 18:51:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1081 transitions. [2024-11-08 18:51:28,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6321637426900585 [2024-11-08 18:51:28,974 INFO L175 Difference]: Start difference. First operand has 348 places, 529 transitions, 14812 flow. Second operand 57 states and 1081 transitions. [2024-11-08 18:51:28,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 1248 transitions, 42188 flow [2024-11-08 18:51:52,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 1248 transitions, 36995 flow, removed 2512 selfloop flow, removed 15 redundant places. [2024-11-08 18:51:52,245 INFO L231 Difference]: Finished difference. Result has 421 places, 668 transitions, 20257 flow [2024-11-08 18:51:52,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=12469, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=20257, PETRI_PLACES=421, PETRI_TRANSITIONS=668} [2024-11-08 18:51:52,247 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2024-11-08 18:51:52,247 INFO L471 AbstractCegarLoop]: Abstraction has has 421 places, 668 transitions, 20257 flow [2024-11-08 18:51:52,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.038461538461538) internal successors, (339), 26 states have internal predecessors, (339), 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 18:51:52,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:52,248 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:52,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:51:52,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 18:51:52,449 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:51:52,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:52,449 INFO L85 PathProgramCache]: Analyzing trace with hash 69567509, now seen corresponding path program 5 times [2024-11-08 18:51:52,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:52,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331075812] [2024-11-08 18:51:52,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:52,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:51:53,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:53,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331075812] [2024-11-08 18:51:53,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331075812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:53,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979466370] [2024-11-08 18:51:53,224 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:51:53,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:53,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:53,227 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:53,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:51:53,330 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-08 18:51:53,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:51:53,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 18:51:53,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:51:53,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:51:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:51:54,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979466370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:51:54,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:51:54,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-08 18:51:54,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121387128] [2024-11-08 18:51:54,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:51:54,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 18:51:54,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:54,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 18:51:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 18:51:54,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:51:54,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 668 transitions, 20257 flow. Second operand has 41 states, 41 states have (on average 13.146341463414634) internal successors, (539), 41 states have internal predecessors, (539), 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 18:51:54,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:54,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:51:54,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:52:18,062 INFO L124 PetriNetUnfolderBase]: 17942/33303 cut-off events. [2024-11-08 18:52:18,062 INFO L125 PetriNetUnfolderBase]: For 7635411/7636893 co-relation queries the response was YES. [2024-11-08 18:52:19,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391032 conditions, 33303 events. 17942/33303 cut-off events. For 7635411/7636893 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 254697 event pairs, 3427 based on Foata normal form. 711/28873 useless extension candidates. Maximal degree in co-relation 390837. Up to 11898 conditions per place. [2024-11-08 18:52:19,593 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 816 selfloop transitions, 366 changer transitions 41/1232 dead transitions. [2024-11-08 18:52:19,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 1232 transitions, 45148 flow [2024-11-08 18:52:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-08 18:52:19,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-08 18:52:19,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 979 transitions. [2024-11-08 18:52:19,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6398692810457516 [2024-11-08 18:52:19,597 INFO L175 Difference]: Start difference. First operand has 421 places, 668 transitions, 20257 flow. Second operand 51 states and 979 transitions. [2024-11-08 18:52:19,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 1232 transitions, 45148 flow [2024-11-08 18:53:00,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1232 transitions, 37421 flow, removed 3773 selfloop flow, removed 9 redundant places. [2024-11-08 18:53:00,362 INFO L231 Difference]: Finished difference. Result has 486 places, 821 transitions, 23396 flow [2024-11-08 18:53:00,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=16556, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=23396, PETRI_PLACES=486, PETRI_TRANSITIONS=821} [2024-11-08 18:53:00,363 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 456 predicate places. [2024-11-08 18:53:00,364 INFO L471 AbstractCegarLoop]: Abstraction has has 486 places, 821 transitions, 23396 flow [2024-11-08 18:53:00,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 13.146341463414634) internal successors, (539), 41 states have internal predecessors, (539), 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 18:53:00,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:53:00,365 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:53:00,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 18:53:00,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 18:53:00,567 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:53:00,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:53:00,568 INFO L85 PathProgramCache]: Analyzing trace with hash -132715173, now seen corresponding path program 6 times [2024-11-08 18:53:00,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:53:00,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237582874] [2024-11-08 18:53:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:53:00,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:53:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:53:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:53:01,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:53:01,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237582874] [2024-11-08 18:53:01,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237582874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:53:01,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838676689] [2024-11-08 18:53:01,096 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:53:01,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:53:01,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:53:01,098 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:53:01,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0024ea3-598f-420e-b94c-c4bfe5cfcbae/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:53:01,187 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-08 18:53:01,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:53:01,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 18:53:01,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:53:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:53:01,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:53:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:53:02,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838676689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:53:02,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:53:02,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-08 18:53:02,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248105895] [2024-11-08 18:53:02,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:53:02,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 18:53:02,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:53:02,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 18:53:02,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 18:53:02,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 18:53:02,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 821 transitions, 23396 flow. Second operand has 41 states, 41 states have (on average 13.146341463414634) internal successors, (539), 41 states have internal predecessors, (539), 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 18:53:02,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:53:02,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 18:53:02,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand