./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:08:50,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:08:50,484 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:08:50,494 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:08:50,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:08:50,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:08:50,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:08:50,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:08:50,555 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:08:50,555 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:08:50,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:08:50,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:08:50,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:08:50,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:08:50,556 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:08:50,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:08:50,557 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:08:50,557 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:08:50,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:08:50,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:08:50,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:08:50,558 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:08:50,558 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:08:50,558 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:08:50,558 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:08:50,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:08:50,558 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:08:50,558 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:08:50,561 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:08:50,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:08:50,562 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:08:50,562 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:08:50,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:08:50,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:08:50,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:08:50,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:08:50,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:08:50,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:08:50,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:08:50,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:08:50,563 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:08:50,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:08:50,563 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:08:50,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:08:50,564 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:08:50,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:08:50,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:08:50,564 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:08:50,564 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2024-11-28 05:08:51,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:08:51,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:08:51,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:08:51,030 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:08:51,030 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:08:51,032 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-11-28 05:08:54,704 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/data/2da0e4e15/857d181d39b24a29987cba273a74b7c4/FLAGaeb8e87cf [2024-11-28 05:08:55,046 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:08:55,050 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-11-28 05:08:55,062 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/data/2da0e4e15/857d181d39b24a29987cba273a74b7c4/FLAGaeb8e87cf [2024-11-28 05:08:55,077 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/data/2da0e4e15/857d181d39b24a29987cba273a74b7c4 [2024-11-28 05:08:55,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:08:55,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:08:55,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:08:55,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:08:55,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:08:55,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6556f288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55, skipping insertion in model container [2024-11-28 05:08:55,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,107 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:08:55,284 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_730d37ce-065e-4d37-a8fc-028ac7e98fd7/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2820,2833] [2024-11-28 05:08:55,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:08:55,317 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:08:55,363 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_730d37ce-065e-4d37-a8fc-028ac7e98fd7/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2820,2833] [2024-11-28 05:08:55,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:08:55,397 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:08:55,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55 WrapperNode [2024-11-28 05:08:55,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:08:55,401 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:08:55,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:08:55,401 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:08:55,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,453 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 268 [2024-11-28 05:08:55,454 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:08:55,454 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:08:55,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:08:55,455 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:08:55,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,488 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 05:08:55,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,498 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,503 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:08:55,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:08:55,529 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:08:55,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:08:55,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (1/1) ... [2024-11-28 05:08:55,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:08:55,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:08:55,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:08:55,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:08:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:08:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 05:08:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 05:08:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 05:08:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 05:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 05:08:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 05:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:08:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:08:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:08:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:08:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:08:55,614 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:08:55,782 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:08:55,786 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:08:56,492 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:08:56,496 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:08:57,075 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:08:57,075 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 05:08:57,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:08:57 BoogieIcfgContainer [2024-11-28 05:08:57,076 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:08:57,079 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:08:57,079 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:08:57,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:08:57,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:08:55" (1/3) ... [2024-11-28 05:08:57,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ee163e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:08:57, skipping insertion in model container [2024-11-28 05:08:57,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:08:55" (2/3) ... [2024-11-28 05:08:57,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ee163e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:08:57, skipping insertion in model container [2024-11-28 05:08:57,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:08:57" (3/3) ... [2024-11-28 05:08:57,089 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2024-11-28 05:08:57,111 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:08:57,113 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-array-int-subst.wvr.c that has 4 procedures, 32 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-28 05:08:57,113 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:08:57,214 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 05:08:57,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2024-11-28 05:08:57,346 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-11-28 05:08:57,352 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 05:08:57,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-28 05:08:57,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2024-11-28 05:08:57,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2024-11-28 05:08:57,383 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:08:57,398 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;@796dbfa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:08:57,398 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 05:08:57,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:08:57,434 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2024-11-28 05:08:57,436 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 05:08:57,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:08:57,437 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:57,438 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:08:57,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:57,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2123886601, now seen corresponding path program 1 times [2024-11-28 05:08:57,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:57,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801998524] [2024-11-28 05:08:57,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:57,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:08:59,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801998524] [2024-11-28 05:08:59,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801998524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:08:59,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:08:59,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:08:59,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813349558] [2024-11-28 05:08:59,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:08:59,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:08:59,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:59,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:08:59,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:08:59,289 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:08:59,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:08:59,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:08:59,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:08:59,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:00,983 INFO L124 PetriNetUnfolderBase]: 2768/3758 cut-off events. [2024-11-28 05:09:00,983 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-11-28 05:09:01,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 3758 events. 2768/3758 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 14837 event pairs, 244 based on Foata normal form. 1/2695 useless extension candidates. Maximal degree in co-relation 4518. Up to 1254 conditions per place. [2024-11-28 05:09:01,031 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 114 selfloop transitions, 16 changer transitions 1/132 dead transitions. [2024-11-28 05:09:01,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 132 transitions, 592 flow [2024-11-28 05:09:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:09:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:09:01,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-11-28 05:09:01,056 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-11-28 05:09:01,058 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 10 states and 172 transitions. [2024-11-28 05:09:01,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 132 transitions, 592 flow [2024-11-28 05:09:01,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 132 transitions, 548 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 05:09:01,077 INFO L231 Difference]: Finished difference. Result has 44 places, 52 transitions, 178 flow [2024-11-28 05:09:01,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=44, PETRI_TRANSITIONS=52} [2024-11-28 05:09:01,086 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-11-28 05:09:01,086 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 52 transitions, 178 flow [2024-11-28 05:09:01,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:01,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:01,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:01,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:09:01,088 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:01,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:01,089 INFO L85 PathProgramCache]: Analyzing trace with hash 60490729, now seen corresponding path program 2 times [2024-11-28 05:09:01,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:01,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544726423] [2024-11-28 05:09:01,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:09:01,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:01,183 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:09:01,183 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:02,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:02,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544726423] [2024-11-28 05:09:02,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544726423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:02,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:02,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:09:02,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273208175] [2024-11-28 05:09:02,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:02,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:09:02,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:02,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:09:02,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:09:02,162 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:02,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 52 transitions, 178 flow. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:02,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:02,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:02,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:03,318 INFO L124 PetriNetUnfolderBase]: 3138/4313 cut-off events. [2024-11-28 05:09:03,318 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2024-11-28 05:09:03,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9476 conditions, 4313 events. 3138/4313 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18161 event pairs, 304 based on Foata normal form. 1/3518 useless extension candidates. Maximal degree in co-relation 9452. Up to 1352 conditions per place. [2024-11-28 05:09:03,349 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 116 selfloop transitions, 18 changer transitions 1/136 dead transitions. [2024-11-28 05:09:03,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 136 transitions, 645 flow [2024-11-28 05:09:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:09:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:09:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-11-28 05:09:03,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-11-28 05:09:03,352 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 178 flow. Second operand 10 states and 174 transitions. [2024-11-28 05:09:03,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 136 transitions, 645 flow [2024-11-28 05:09:03,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 136 transitions, 639 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-28 05:09:03,359 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 242 flow [2024-11-28 05:09:03,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2024-11-28 05:09:03,360 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2024-11-28 05:09:03,360 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 242 flow [2024-11-28 05:09:03,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:03,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:03,360 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:03,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:09:03,361 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:03,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:03,361 INFO L85 PathProgramCache]: Analyzing trace with hash -234459957, now seen corresponding path program 1 times [2024-11-28 05:09:03,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:03,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88000513] [2024-11-28 05:09:03,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:03,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:03,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:03,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88000513] [2024-11-28 05:09:03,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88000513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:03,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795955078] [2024-11-28 05:09:03,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:03,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:03,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:03,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:03,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:09:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:03,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:09:03,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:04,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:04,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795955078] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:04,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:04,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-28 05:09:04,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344292106] [2024-11-28 05:09:04,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:04,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:09:04,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:04,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:09:04,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:09:04,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:04,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:04,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:04,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:04,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:05,230 INFO L124 PetriNetUnfolderBase]: 4455/6131 cut-off events. [2024-11-28 05:09:05,230 INFO L125 PetriNetUnfolderBase]: For 2400/2400 co-relation queries the response was YES. [2024-11-28 05:09:05,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14357 conditions, 6131 events. 4455/6131 cut-off events. For 2400/2400 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 27358 event pairs, 2328 based on Foata normal form. 1/5035 useless extension candidates. Maximal degree in co-relation 11311. Up to 2983 conditions per place. [2024-11-28 05:09:05,274 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 123 selfloop transitions, 8 changer transitions 5/137 dead transitions. [2024-11-28 05:09:05,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 137 transitions, 745 flow [2024-11-28 05:09:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:09:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:09:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-11-28 05:09:05,279 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-11-28 05:09:05,279 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 242 flow. Second operand 6 states and 147 transitions. [2024-11-28 05:09:05,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 137 transitions, 745 flow [2024-11-28 05:09:05,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 137 transitions, 722 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-28 05:09:05,304 INFO L231 Difference]: Finished difference. Result has 57 places, 58 transitions, 254 flow [2024-11-28 05:09:05,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=57, PETRI_TRANSITIONS=58} [2024-11-28 05:09:05,305 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2024-11-28 05:09:05,305 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 58 transitions, 254 flow [2024-11-28 05:09:05,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:05,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:05,305 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:05,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:09:05,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:05,511 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:05,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:05,512 INFO L85 PathProgramCache]: Analyzing trace with hash 816924651, now seen corresponding path program 1 times [2024-11-28 05:09:05,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:05,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924769238] [2024-11-28 05:09:05,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:05,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:05,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:05,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924769238] [2024-11-28 05:09:05,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924769238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:05,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3377695] [2024-11-28 05:09:05,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:05,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:05,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:05,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:05,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:09:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:05,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:09:05,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:06,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:06,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3377695] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:06,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:06,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-11-28 05:09:06,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22459698] [2024-11-28 05:09:06,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:06,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:09:06,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:06,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:09:06,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:09:06,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:06,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 58 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:06,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:06,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:06,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:08,024 INFO L124 PetriNetUnfolderBase]: 6746/9268 cut-off events. [2024-11-28 05:09:08,025 INFO L125 PetriNetUnfolderBase]: For 3820/3820 co-relation queries the response was YES. [2024-11-28 05:09:08,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22421 conditions, 9268 events. 6746/9268 cut-off events. For 3820/3820 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 43845 event pairs, 3730 based on Foata normal form. 1/8018 useless extension candidates. Maximal degree in co-relation 19094. Up to 6121 conditions per place. [2024-11-28 05:09:08,104 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 135 selfloop transitions, 8 changer transitions 5/149 dead transitions. [2024-11-28 05:09:08,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 149 transitions, 833 flow [2024-11-28 05:09:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:09:08,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:09:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-11-28 05:09:08,110 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-11-28 05:09:08,110 INFO L175 Difference]: Start difference. First operand has 57 places, 58 transitions, 254 flow. Second operand 7 states and 151 transitions. [2024-11-28 05:09:08,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 149 transitions, 833 flow [2024-11-28 05:09:08,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 149 transitions, 822 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:09:08,131 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 293 flow [2024-11-28 05:09:08,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-11-28 05:09:08,132 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2024-11-28 05:09:08,133 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 293 flow [2024-11-28 05:09:08,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:08,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:08,134 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:08,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:09:08,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:08,338 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:08,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:08,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1430488250, now seen corresponding path program 1 times [2024-11-28 05:09:08,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:08,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368464384] [2024-11-28 05:09:08,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:08,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:08,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:08,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368464384] [2024-11-28 05:09:08,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368464384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:08,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730199242] [2024-11-28 05:09:08,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:08,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:08,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:08,814 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:08,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:09:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:08,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:09:08,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:09,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:09,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730199242] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:09,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:09,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2024-11-28 05:09:09,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780045132] [2024-11-28 05:09:09,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:09,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:09:09,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:09,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:09:09,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:09:09,599 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:09,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 293 flow. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:09,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:09,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:09,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:11,325 INFO L124 PetriNetUnfolderBase]: 7600/10441 cut-off events. [2024-11-28 05:09:11,326 INFO L125 PetriNetUnfolderBase]: For 5833/5833 co-relation queries the response was YES. [2024-11-28 05:09:11,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25988 conditions, 10441 events. 7600/10441 cut-off events. For 5833/5833 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 50852 event pairs, 1114 based on Foata normal form. 1/9025 useless extension candidates. Maximal degree in co-relation 22524. Up to 4720 conditions per place. [2024-11-28 05:09:11,389 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 172 selfloop transitions, 18 changer transitions 1/192 dead transitions. [2024-11-28 05:09:11,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 192 transitions, 1090 flow [2024-11-28 05:09:11,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:09:11,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:09:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-11-28 05:09:11,392 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 05:09:11,392 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 293 flow. Second operand 11 states and 220 transitions. [2024-11-28 05:09:11,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 192 transitions, 1090 flow [2024-11-28 05:09:11,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 192 transitions, 1071 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-28 05:09:11,417 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 370 flow [2024-11-28 05:09:11,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=370, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-11-28 05:09:11,419 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 37 predicate places. [2024-11-28 05:09:11,420 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 370 flow [2024-11-28 05:09:11,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:11,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:11,420 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:11,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:11,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:11,621 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:11,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:11,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1034639680, now seen corresponding path program 2 times [2024-11-28 05:09:11,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:11,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485665914] [2024-11-28 05:09:11,622 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:09:11,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:11,658 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:09:11,659 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:12,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:12,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485665914] [2024-11-28 05:09:12,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485665914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:12,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:12,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:09:12,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295953170] [2024-11-28 05:09:12,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:12,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:09:12,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:12,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:09:12,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:09:12,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:12,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:12,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:12,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:12,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:13,934 INFO L124 PetriNetUnfolderBase]: 7931/10934 cut-off events. [2024-11-28 05:09:13,934 INFO L125 PetriNetUnfolderBase]: For 9114/9114 co-relation queries the response was YES. [2024-11-28 05:09:14,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28731 conditions, 10934 events. 7931/10934 cut-off events. For 9114/9114 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 53688 event pairs, 838 based on Foata normal form. 1/9468 useless extension candidates. Maximal degree in co-relation 25248. Up to 4720 conditions per place. [2024-11-28 05:09:14,048 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 129 selfloop transitions, 27 changer transitions 1/158 dead transitions. [2024-11-28 05:09:14,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 158 transitions, 984 flow [2024-11-28 05:09:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:09:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:09:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-11-28 05:09:14,050 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-11-28 05:09:14,050 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 370 flow. Second operand 10 states and 174 transitions. [2024-11-28 05:09:14,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 158 transitions, 984 flow [2024-11-28 05:09:14,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 158 transitions, 948 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-28 05:09:14,138 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 466 flow [2024-11-28 05:09:14,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=466, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-11-28 05:09:14,139 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 44 predicate places. [2024-11-28 05:09:14,140 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 466 flow [2024-11-28 05:09:14,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:14,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:14,141 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:14,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:09:14,142 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:14,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:14,143 INFO L85 PathProgramCache]: Analyzing trace with hash -962259217, now seen corresponding path program 1 times [2024-11-28 05:09:14,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:14,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628249001] [2024-11-28 05:09:14,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:14,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:14,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:14,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628249001] [2024-11-28 05:09:14,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628249001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:14,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:14,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:09:14,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480005515] [2024-11-28 05:09:14,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:14,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:09:14,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:14,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:09:14,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:14,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:14,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 466 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:14,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:14,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:14,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:15,349 INFO L124 PetriNetUnfolderBase]: 5537/7811 cut-off events. [2024-11-28 05:09:15,350 INFO L125 PetriNetUnfolderBase]: For 9056/9056 co-relation queries the response was YES. [2024-11-28 05:09:15,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21177 conditions, 7811 events. 5537/7811 cut-off events. For 9056/9056 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 38140 event pairs, 2136 based on Foata normal form. 0/6929 useless extension candidates. Maximal degree in co-relation 19020. Up to 3888 conditions per place. [2024-11-28 05:09:15,440 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 98 selfloop transitions, 17 changer transitions 0/116 dead transitions. [2024-11-28 05:09:15,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 816 flow [2024-11-28 05:09:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:09:15,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:09:15,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-28 05:09:15,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-11-28 05:09:15,442 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 466 flow. Second operand 6 states and 111 transitions. [2024-11-28 05:09:15,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 816 flow [2024-11-28 05:09:15,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 116 transitions, 779 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-28 05:09:15,513 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 461 flow [2024-11-28 05:09:15,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=461, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-11-28 05:09:15,514 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 45 predicate places. [2024-11-28 05:09:15,514 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 461 flow [2024-11-28 05:09:15,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:15,514 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:15,515 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:15,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:09:15,515 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:15,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:15,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1128966361, now seen corresponding path program 1 times [2024-11-28 05:09:15,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:15,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749617094] [2024-11-28 05:09:15,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:15,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:15,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:15,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749617094] [2024-11-28 05:09:15,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749617094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:15,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:15,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:09:15,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116652982] [2024-11-28 05:09:15,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:15,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:09:15,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:15,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:09:15,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:15,650 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:15,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 461 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:15,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:15,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:15,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:16,643 INFO L124 PetriNetUnfolderBase]: 4145/5994 cut-off events. [2024-11-28 05:09:16,643 INFO L125 PetriNetUnfolderBase]: For 7685/7685 co-relation queries the response was YES. [2024-11-28 05:09:16,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16315 conditions, 5994 events. 4145/5994 cut-off events. For 7685/7685 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 29024 event pairs, 1793 based on Foata normal form. 0/5439 useless extension candidates. Maximal degree in co-relation 15388. Up to 2624 conditions per place. [2024-11-28 05:09:16,698 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 83 selfloop transitions, 9 changer transitions 17/110 dead transitions. [2024-11-28 05:09:16,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 110 transitions, 775 flow [2024-11-28 05:09:16,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:09:16,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:09:16,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-11-28 05:09:16,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-28 05:09:16,700 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 461 flow. Second operand 6 states and 106 transitions. [2024-11-28 05:09:16,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 110 transitions, 775 flow [2024-11-28 05:09:16,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 110 transitions, 717 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-11-28 05:09:16,786 INFO L231 Difference]: Finished difference. Result has 82 places, 56 transitions, 299 flow [2024-11-28 05:09:16,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=82, PETRI_TRANSITIONS=56} [2024-11-28 05:09:16,791 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 45 predicate places. [2024-11-28 05:09:16,791 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 56 transitions, 299 flow [2024-11-28 05:09:16,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:16,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:16,791 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:16,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:09:16,792 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:16,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:16,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1905087439, now seen corresponding path program 1 times [2024-11-28 05:09:16,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:16,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290521793] [2024-11-28 05:09:16,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:16,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:17,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:17,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290521793] [2024-11-28 05:09:17,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290521793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:17,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:17,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:09:17,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276274698] [2024-11-28 05:09:17,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:17,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:09:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:17,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:09:17,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:17,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:17,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 56 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:17,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:17,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:17,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:17,593 INFO L124 PetriNetUnfolderBase]: 2373/3372 cut-off events. [2024-11-28 05:09:17,595 INFO L125 PetriNetUnfolderBase]: For 3702/3702 co-relation queries the response was YES. [2024-11-28 05:09:17,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9003 conditions, 3372 events. 2373/3372 cut-off events. For 3702/3702 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 14240 event pairs, 1288 based on Foata normal form. 0/3110 useless extension candidates. Maximal degree in co-relation 8963. Up to 2684 conditions per place. [2024-11-28 05:09:17,626 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 44 selfloop transitions, 2 changer transitions 47/94 dead transitions. [2024-11-28 05:09:17,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 623 flow [2024-11-28 05:09:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:09:17,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:09:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-11-28 05:09:17,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.485 [2024-11-28 05:09:17,628 INFO L175 Difference]: Start difference. First operand has 82 places, 56 transitions, 299 flow. Second operand 5 states and 97 transitions. [2024-11-28 05:09:17,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 623 flow [2024-11-28 05:09:17,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 94 transitions, 576 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-11-28 05:09:17,640 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 201 flow [2024-11-28 05:09:17,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2024-11-28 05:09:17,641 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2024-11-28 05:09:17,641 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 201 flow [2024-11-28 05:09:17,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:17,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:17,642 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:17,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:09:17,642 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:17,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash -447894647, now seen corresponding path program 1 times [2024-11-28 05:09:17,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:17,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014780127] [2024-11-28 05:09:17,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:17,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:17,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:17,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014780127] [2024-11-28 05:09:17,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014780127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:17,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:17,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:09:17,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076690437] [2024-11-28 05:09:17,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:17,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:09:17,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:17,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:09:17,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:17,787 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:17,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:17,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:17,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:17,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:18,245 INFO L124 PetriNetUnfolderBase]: 1458/2043 cut-off events. [2024-11-28 05:09:18,246 INFO L125 PetriNetUnfolderBase]: For 1313/1313 co-relation queries the response was YES. [2024-11-28 05:09:18,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5230 conditions, 2043 events. 1458/2043 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7740 event pairs, 609 based on Foata normal form. 52/1984 useless extension candidates. Maximal degree in co-relation 5207. Up to 1325 conditions per place. [2024-11-28 05:09:18,261 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 37 selfloop transitions, 2 changer transitions 44/84 dead transitions. [2024-11-28 05:09:18,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 485 flow [2024-11-28 05:09:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:09:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:09:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-11-28 05:09:18,263 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-11-28 05:09:18,264 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 201 flow. Second operand 6 states and 101 transitions. [2024-11-28 05:09:18,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 485 flow [2024-11-28 05:09:18,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 84 transitions, 441 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-11-28 05:09:18,272 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 133 flow [2024-11-28 05:09:18,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=133, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-11-28 05:09:18,273 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2024-11-28 05:09:18,273 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 133 flow [2024-11-28 05:09:18,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:18,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:18,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:18,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:09:18,273 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:18,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:18,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1034193871, now seen corresponding path program 1 times [2024-11-28 05:09:18,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:18,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188216777] [2024-11-28 05:09:18,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:18,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:18,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:18,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188216777] [2024-11-28 05:09:18,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188216777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:18,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120040042] [2024-11-28 05:09:18,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:18,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:18,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:18,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:18,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:09:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:18,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:09:18,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:18,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:18,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120040042] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:18,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:18,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 12 [2024-11-28 05:09:18,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245505606] [2024-11-28 05:09:18,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:18,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:09:18,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:18,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:09:18,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:09:18,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:18,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 133 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:18,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:18,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:18,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:19,291 INFO L124 PetriNetUnfolderBase]: 1488/2056 cut-off events. [2024-11-28 05:09:19,291 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2024-11-28 05:09:19,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4846 conditions, 2056 events. 1488/2056 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7702 event pairs, 447 based on Foata normal form. 62/1842 useless extension candidates. Maximal degree in co-relation 4826. Up to 1084 conditions per place. [2024-11-28 05:09:19,303 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 57 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2024-11-28 05:09:19,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 65 transitions, 336 flow [2024-11-28 05:09:19,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:09:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:09:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-11-28 05:09:19,305 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31785714285714284 [2024-11-28 05:09:19,306 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 133 flow. Second operand 7 states and 89 transitions. [2024-11-28 05:09:19,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 65 transitions, 336 flow [2024-11-28 05:09:19,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 65 transitions, 306 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-11-28 05:09:19,311 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 140 flow [2024-11-28 05:09:19,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-28 05:09:19,312 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2024-11-28 05:09:19,312 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 140 flow [2024-11-28 05:09:19,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:19,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:19,313 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:19,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:09:19,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 05:09:19,518 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:19,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:19,519 INFO L85 PathProgramCache]: Analyzing trace with hash -876833073, now seen corresponding path program 1 times [2024-11-28 05:09:19,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:19,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593366370] [2024-11-28 05:09:19,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:19,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:19,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593366370] [2024-11-28 05:09:19,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593366370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:19,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:19,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:09:19,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510969906] [2024-11-28 05:09:19,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:19,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:09:19,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:19,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:09:19,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:19,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:19,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:19,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:19,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:19,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:20,103 INFO L124 PetriNetUnfolderBase]: 1488/2054 cut-off events. [2024-11-28 05:09:20,103 INFO L125 PetriNetUnfolderBase]: For 724/724 co-relation queries the response was YES. [2024-11-28 05:09:20,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4963 conditions, 2054 events. 1488/2054 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7578 event pairs, 564 based on Foata normal form. 1/1749 useless extension candidates. Maximal degree in co-relation 4938. Up to 1202 conditions per place. [2024-11-28 05:09:20,116 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 55 selfloop transitions, 3 changer transitions 24/83 dead transitions. [2024-11-28 05:09:20,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 83 transitions, 415 flow [2024-11-28 05:09:20,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:09:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-28 05:09:20,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-28 05:09:20,118 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 140 flow. Second operand 4 states and 90 transitions. [2024-11-28 05:09:20,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 83 transitions, 415 flow [2024-11-28 05:09:20,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 83 transitions, 404 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 05:09:20,123 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 135 flow [2024-11-28 05:09:20,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-28 05:09:20,124 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2024-11-28 05:09:20,127 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 135 flow [2024-11-28 05:09:20,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:20,127 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:20,127 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:20,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:09:20,128 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:20,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1258813325, now seen corresponding path program 1 times [2024-11-28 05:09:20,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:20,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061098966] [2024-11-28 05:09:20,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:20,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:20,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:20,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061098966] [2024-11-28 05:09:20,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061098966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:20,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078378321] [2024-11-28 05:09:20,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:20,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:20,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:20,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:20,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:09:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:20,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 05:09:20,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:21,145 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:21,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078378321] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:21,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:21,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 20 [2024-11-28 05:09:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590658782] [2024-11-28 05:09:21,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:21,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:09:21,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:21,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:09:21,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:09:21,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:21,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 135 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2024-11-28 05:09:21,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:21,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:21,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:22,836 INFO L124 PetriNetUnfolderBase]: 3425/4692 cut-off events. [2024-11-28 05:09:22,836 INFO L125 PetriNetUnfolderBase]: For 2673/2673 co-relation queries the response was YES. [2024-11-28 05:09:22,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11805 conditions, 4692 events. 3425/4692 cut-off events. For 2673/2673 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19937 event pairs, 468 based on Foata normal form. 1/3942 useless extension candidates. Maximal degree in co-relation 11784. Up to 1479 conditions per place. [2024-11-28 05:09:22,865 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 125 selfloop transitions, 18 changer transitions 1/145 dead transitions. [2024-11-28 05:09:22,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 145 transitions, 742 flow [2024-11-28 05:09:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:09:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:09:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-11-28 05:09:22,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-28 05:09:22,867 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 135 flow. Second operand 11 states and 180 transitions. [2024-11-28 05:09:22,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 145 transitions, 742 flow [2024-11-28 05:09:22,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 145 transitions, 712 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-28 05:09:22,875 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 269 flow [2024-11-28 05:09:22,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=269, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-11-28 05:09:22,876 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2024-11-28 05:09:22,876 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 269 flow [2024-11-28 05:09:22,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2024-11-28 05:09:22,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:22,877 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:22,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:23,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 05:09:23,082 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:23,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1632093159, now seen corresponding path program 2 times [2024-11-28 05:09:23,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:23,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996584475] [2024-11-28 05:09:23,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:09:23,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:23,192 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:09:23,193 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:09:24,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:24,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996584475] [2024-11-28 05:09:24,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996584475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:24,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:24,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:09:24,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457632870] [2024-11-28 05:09:24,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:24,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:09:24,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:24,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:09:24,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:09:24,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:24,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 269 flow. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:24,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:24,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:24,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:26,111 INFO L124 PetriNetUnfolderBase]: 3915/5444 cut-off events. [2024-11-28 05:09:26,111 INFO L125 PetriNetUnfolderBase]: For 4568/4568 co-relation queries the response was YES. [2024-11-28 05:09:26,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14420 conditions, 5444 events. 3915/5444 cut-off events. For 4568/4568 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 24729 event pairs, 644 based on Foata normal form. 1/4949 useless extension candidates. Maximal degree in co-relation 14390. Up to 2216 conditions per place. [2024-11-28 05:09:26,140 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 118 selfloop transitions, 17 changer transitions 4/140 dead transitions. [2024-11-28 05:09:26,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 140 transitions, 810 flow [2024-11-28 05:09:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:09:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:09:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-11-28 05:09:26,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3931818181818182 [2024-11-28 05:09:26,143 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 269 flow. Second operand 11 states and 173 transitions. [2024-11-28 05:09:26,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 140 transitions, 810 flow [2024-11-28 05:09:26,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 140 transitions, 805 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 05:09:26,156 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 344 flow [2024-11-28 05:09:26,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=344, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-11-28 05:09:26,157 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2024-11-28 05:09:26,157 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 344 flow [2024-11-28 05:09:26,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:26,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:26,158 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:26,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:09:26,159 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:26,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:26,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1347311707, now seen corresponding path program 3 times [2024-11-28 05:09:26,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:26,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234987544] [2024-11-28 05:09:26,161 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:09:26,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:26,222 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:09:26,222 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:09:27,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:27,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234987544] [2024-11-28 05:09:27,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234987544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:27,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:27,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:09:27,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090140430] [2024-11-28 05:09:27,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:27,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:09:27,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:27,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:09:27,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:09:27,129 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:27,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 344 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2024-11-28 05:09:27,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:27,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:27,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:29,032 INFO L124 PetriNetUnfolderBase]: 4968/6944 cut-off events. [2024-11-28 05:09:29,033 INFO L125 PetriNetUnfolderBase]: For 9322/9322 co-relation queries the response was YES. [2024-11-28 05:09:29,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19429 conditions, 6944 events. 4968/6944 cut-off events. For 9322/9322 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 33041 event pairs, 908 based on Foata normal form. 1/6574 useless extension candidates. Maximal degree in co-relation 19395. Up to 2529 conditions per place. [2024-11-28 05:09:29,110 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 127 selfloop transitions, 27 changer transitions 1/156 dead transitions. [2024-11-28 05:09:29,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 156 transitions, 1008 flow [2024-11-28 05:09:29,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:09:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:09:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-11-28 05:09:29,117 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4113636363636364 [2024-11-28 05:09:29,117 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 344 flow. Second operand 11 states and 181 transitions. [2024-11-28 05:09:29,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 156 transitions, 1008 flow [2024-11-28 05:09:29,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 156 transitions, 981 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-28 05:09:29,160 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 488 flow [2024-11-28 05:09:29,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=488, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-11-28 05:09:29,163 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 39 predicate places. [2024-11-28 05:09:29,163 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 488 flow [2024-11-28 05:09:29,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2024-11-28 05:09:29,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:29,164 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:29,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:09:29,164 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:29,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:29,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1682677767, now seen corresponding path program 4 times [2024-11-28 05:09:29,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:29,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005906032] [2024-11-28 05:09:29,166 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:09:29,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:29,191 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:09:29,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:29,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:29,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005906032] [2024-11-28 05:09:29,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005906032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:29,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597818392] [2024-11-28 05:09:29,532 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:09:29,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:29,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:29,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:29,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:09:29,667 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:09:29,667 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:29,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 05:09:29,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:30,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:31,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597818392] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:31,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:31,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 17 [2024-11-28 05:09:31,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817744439] [2024-11-28 05:09:31,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:31,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:09:31,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:31,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:09:31,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:09:31,041 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:31,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 488 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:31,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:31,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:31,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:33,923 INFO L124 PetriNetUnfolderBase]: 10033/14275 cut-off events. [2024-11-28 05:09:33,923 INFO L125 PetriNetUnfolderBase]: For 27821/27821 co-relation queries the response was YES. [2024-11-28 05:09:33,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41673 conditions, 14275 events. 10033/14275 cut-off events. For 27821/27821 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 78924 event pairs, 1170 based on Foata normal form. 2/13472 useless extension candidates. Maximal degree in co-relation 41635. Up to 3900 conditions per place. [2024-11-28 05:09:34,030 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 167 selfloop transitions, 46 changer transitions 4/218 dead transitions. [2024-11-28 05:09:34,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 218 transitions, 1780 flow [2024-11-28 05:09:34,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:09:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:09:34,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-11-28 05:09:34,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-11-28 05:09:34,033 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 488 flow. Second operand 9 states and 185 transitions. [2024-11-28 05:09:34,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 218 transitions, 1780 flow [2024-11-28 05:09:34,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 218 transitions, 1726 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-28 05:09:34,113 INFO L231 Difference]: Finished difference. Result has 86 places, 95 transitions, 902 flow [2024-11-28 05:09:34,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=902, PETRI_PLACES=86, PETRI_TRANSITIONS=95} [2024-11-28 05:09:34,114 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-11-28 05:09:34,114 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 95 transitions, 902 flow [2024-11-28 05:09:34,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:34,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:34,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:34,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:09:34,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 05:09:34,315 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:34,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:34,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1958242405, now seen corresponding path program 5 times [2024-11-28 05:09:34,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:34,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489563629] [2024-11-28 05:09:34,316 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:09:34,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:34,344 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:34,344 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:34,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:34,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489563629] [2024-11-28 05:09:34,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489563629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:34,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931022465] [2024-11-28 05:09:34,690 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:09:34,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:34,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:34,694 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:34,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:09:34,852 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:34,852 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:34,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 05:09:34,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:35,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:35,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931022465] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:35,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:35,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 18 [2024-11-28 05:09:35,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563556841] [2024-11-28 05:09:35,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:35,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:09:35,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:35,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:09:35,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:09:35,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:35,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 95 transitions, 902 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:35,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:35,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:35,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:37,838 INFO L124 PetriNetUnfolderBase]: 10290/14642 cut-off events. [2024-11-28 05:09:37,838 INFO L125 PetriNetUnfolderBase]: For 43611/43611 co-relation queries the response was YES. [2024-11-28 05:09:37,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49502 conditions, 14642 events. 10290/14642 cut-off events. For 43611/43611 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 82172 event pairs, 2186 based on Foata normal form. 2/13812 useless extension candidates. Maximal degree in co-relation 49458. Up to 3960 conditions per place. [2024-11-28 05:09:37,970 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 195 selfloop transitions, 38 changer transitions 4/238 dead transitions. [2024-11-28 05:09:37,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 238 transitions, 2211 flow [2024-11-28 05:09:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:09:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:09:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-11-28 05:09:37,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4775 [2024-11-28 05:09:37,973 INFO L175 Difference]: Start difference. First operand has 86 places, 95 transitions, 902 flow. Second operand 10 states and 191 transitions. [2024-11-28 05:09:37,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 238 transitions, 2211 flow [2024-11-28 05:09:38,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 238 transitions, 2176 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-28 05:09:38,154 INFO L231 Difference]: Finished difference. Result has 96 places, 107 transitions, 1124 flow [2024-11-28 05:09:38,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1124, PETRI_PLACES=96, PETRI_TRANSITIONS=107} [2024-11-28 05:09:38,155 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 59 predicate places. [2024-11-28 05:09:38,155 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 107 transitions, 1124 flow [2024-11-28 05:09:38,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:38,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:38,156 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:38,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:09:38,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 05:09:38,357 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:38,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash 383726741, now seen corresponding path program 6 times [2024-11-28 05:09:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:38,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193481026] [2024-11-28 05:09:38,358 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:09:38,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:38,386 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 05:09:38,386 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:09:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:38,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193481026] [2024-11-28 05:09:38,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193481026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:38,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:38,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:09:38,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206250715] [2024-11-28 05:09:38,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:38,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:09:38,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:38,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:09:38,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:09:38,844 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:38,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 107 transitions, 1124 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:38,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:38,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:38,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:41,829 INFO L124 PetriNetUnfolderBase]: 11022/15776 cut-off events. [2024-11-28 05:09:41,829 INFO L125 PetriNetUnfolderBase]: For 57553/57553 co-relation queries the response was YES. [2024-11-28 05:09:41,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55550 conditions, 15776 events. 11022/15776 cut-off events. For 57553/57553 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 89135 event pairs, 2563 based on Foata normal form. 4/14880 useless extension candidates. Maximal degree in co-relation 55503. Up to 4454 conditions per place. [2024-11-28 05:09:41,976 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 178 selfloop transitions, 42 changer transitions 1/222 dead transitions. [2024-11-28 05:09:41,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 222 transitions, 2260 flow [2024-11-28 05:09:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:09:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:09:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-11-28 05:09:41,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-28 05:09:41,979 INFO L175 Difference]: Start difference. First operand has 96 places, 107 transitions, 1124 flow. Second operand 10 states and 175 transitions. [2024-11-28 05:09:41,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 222 transitions, 2260 flow [2024-11-28 05:09:42,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 222 transitions, 2199 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-28 05:09:42,112 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 1394 flow [2024-11-28 05:09:42,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1394, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2024-11-28 05:09:42,113 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 67 predicate places. [2024-11-28 05:09:42,113 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 1394 flow [2024-11-28 05:09:42,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:42,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:42,113 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:42,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 05:09:42,113 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:42,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:42,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2004227933, now seen corresponding path program 7 times [2024-11-28 05:09:42,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:42,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426512391] [2024-11-28 05:09:42,114 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:09:42,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:42,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:42,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426512391] [2024-11-28 05:09:42,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426512391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:42,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338556937] [2024-11-28 05:09:42,571 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:09:42,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:42,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:42,575 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:42,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:09:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:42,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 05:09:42,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:43,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:43,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338556937] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:43,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:43,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 22 [2024-11-28 05:09:43,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522950487] [2024-11-28 05:09:43,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:43,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:09:43,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:43,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:09:43,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:09:43,624 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:43,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 1394 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2024-11-28 05:09:43,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:43,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:43,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:47,403 INFO L124 PetriNetUnfolderBase]: 11022/15774 cut-off events. [2024-11-28 05:09:47,403 INFO L125 PetriNetUnfolderBase]: For 69231/69231 co-relation queries the response was YES. [2024-11-28 05:09:47,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56358 conditions, 15774 events. 11022/15774 cut-off events. For 69231/69231 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 90118 event pairs, 2496 based on Foata normal form. 1/14875 useless extension candidates. Maximal degree in co-relation 56307. Up to 4258 conditions per place. [2024-11-28 05:09:47,532 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 185 selfloop transitions, 41 changer transitions 4/231 dead transitions. [2024-11-28 05:09:47,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 231 transitions, 2474 flow [2024-11-28 05:09:47,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:09:47,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:09:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-11-28 05:09:47,535 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4113636363636364 [2024-11-28 05:09:47,535 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 1394 flow. Second operand 11 states and 181 transitions. [2024-11-28 05:09:47,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 231 transitions, 2474 flow [2024-11-28 05:09:47,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 231 transitions, 2422 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-11-28 05:09:47,733 INFO L231 Difference]: Finished difference. Result has 111 places, 117 transitions, 1440 flow [2024-11-28 05:09:47,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1440, PETRI_PLACES=111, PETRI_TRANSITIONS=117} [2024-11-28 05:09:47,733 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 74 predicate places. [2024-11-28 05:09:47,733 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 117 transitions, 1440 flow [2024-11-28 05:09:47,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2024-11-28 05:09:47,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:47,734 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:47,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:09:47,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:47,935 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:47,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:47,935 INFO L85 PathProgramCache]: Analyzing trace with hash 484170329, now seen corresponding path program 8 times [2024-11-28 05:09:47,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:47,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378420026] [2024-11-28 05:09:47,935 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:09:47,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:47,965 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:09:47,965 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:48,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:09:48,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:48,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378420026] [2024-11-28 05:09:48,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378420026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:48,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:48,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:09:48,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025610366] [2024-11-28 05:09:48,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:48,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:09:48,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:48,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:09:48,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:09:48,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:48,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 117 transitions, 1440 flow. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:48,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:48,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:48,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:50,711 INFO L124 PetriNetUnfolderBase]: 7355/10646 cut-off events. [2024-11-28 05:09:50,711 INFO L125 PetriNetUnfolderBase]: For 48105/48105 co-relation queries the response was YES. [2024-11-28 05:09:50,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37590 conditions, 10646 events. 7355/10646 cut-off events. For 48105/48105 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 58252 event pairs, 1912 based on Foata normal form. 193/10206 useless extension candidates. Maximal degree in co-relation 37537. Up to 3959 conditions per place. [2024-11-28 05:09:50,789 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 143 selfloop transitions, 33 changer transitions 10/187 dead transitions. [2024-11-28 05:09:50,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 187 transitions, 1907 flow [2024-11-28 05:09:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:09:50,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:09:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-11-28 05:09:50,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3840909090909091 [2024-11-28 05:09:50,791 INFO L175 Difference]: Start difference. First operand has 111 places, 117 transitions, 1440 flow. Second operand 11 states and 169 transitions. [2024-11-28 05:09:50,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 187 transitions, 1907 flow [2024-11-28 05:09:51,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 187 transitions, 1760 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-11-28 05:09:51,112 INFO L231 Difference]: Finished difference. Result has 113 places, 105 transitions, 1181 flow [2024-11-28 05:09:51,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1181, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2024-11-28 05:09:51,113 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 76 predicate places. [2024-11-28 05:09:51,113 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 1181 flow [2024-11-28 05:09:51,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:51,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:51,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:51,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 05:09:51,114 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:51,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:51,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1110047359, now seen corresponding path program 1 times [2024-11-28 05:09:51,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:51,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119190188] [2024-11-28 05:09:51,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:51,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:09:51,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:51,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119190188] [2024-11-28 05:09:51,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119190188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:51,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:51,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:09:51,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663719863] [2024-11-28 05:09:51,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:51,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:09:51,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:51,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:09:51,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:51,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:51,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 1181 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:51,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:51,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:51,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:52,647 INFO L124 PetriNetUnfolderBase]: 5262/7848 cut-off events. [2024-11-28 05:09:52,648 INFO L125 PetriNetUnfolderBase]: For 31184/31184 co-relation queries the response was YES. [2024-11-28 05:09:52,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27175 conditions, 7848 events. 5262/7848 cut-off events. For 31184/31184 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 43719 event pairs, 2677 based on Foata normal form. 0/7625 useless extension candidates. Maximal degree in co-relation 27122. Up to 3975 conditions per place. [2024-11-28 05:09:52,705 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 58 selfloop transitions, 2 changer transitions 62/123 dead transitions. [2024-11-28 05:09:52,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 123 transitions, 1310 flow [2024-11-28 05:09:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:09:52,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:09:52,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-11-28 05:09:52,706 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.445 [2024-11-28 05:09:52,706 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 1181 flow. Second operand 5 states and 89 transitions. [2024-11-28 05:09:52,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 123 transitions, 1310 flow [2024-11-28 05:09:52,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 123 transitions, 1269 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-28 05:09:52,797 INFO L231 Difference]: Finished difference. Result has 111 places, 61 transitions, 423 flow [2024-11-28 05:09:52,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=423, PETRI_PLACES=111, PETRI_TRANSITIONS=61} [2024-11-28 05:09:52,798 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 74 predicate places. [2024-11-28 05:09:52,798 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 61 transitions, 423 flow [2024-11-28 05:09:52,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:52,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:52,798 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:52,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 05:09:52,798 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:52,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:52,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2011697912, now seen corresponding path program 1 times [2024-11-28 05:09:52,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:52,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245590690] [2024-11-28 05:09:52,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:52,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:52,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:52,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245590690] [2024-11-28 05:09:52,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245590690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:52,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834751715] [2024-11-28 05:09:52,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:52,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:52,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:52,987 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:52,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:09:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:53,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:09:53,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:53,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:53,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834751715] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:53,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:53,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-11-28 05:09:53,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148501279] [2024-11-28 05:09:53,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:53,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:09:53,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:53,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:09:53,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:09:53,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:53,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 61 transitions, 423 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:53,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:53,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:53,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:54,355 INFO L124 PetriNetUnfolderBase]: 4138/5958 cut-off events. [2024-11-28 05:09:54,355 INFO L125 PetriNetUnfolderBase]: For 15951/15951 co-relation queries the response was YES. [2024-11-28 05:09:54,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20564 conditions, 5958 events. 4138/5958 cut-off events. For 15951/15951 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 28762 event pairs, 1952 based on Foata normal form. 222/6179 useless extension candidates. Maximal degree in co-relation 20529. Up to 3140 conditions per place. [2024-11-28 05:09:54,405 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 85 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-11-28 05:09:54,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 96 transitions, 873 flow [2024-11-28 05:09:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:09:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:09:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-11-28 05:09:54,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30357142857142855 [2024-11-28 05:09:54,407 INFO L175 Difference]: Start difference. First operand has 111 places, 61 transitions, 423 flow. Second operand 7 states and 85 transitions. [2024-11-28 05:09:54,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 96 transitions, 873 flow [2024-11-28 05:09:54,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 739 flow, removed 65 selfloop flow, removed 16 redundant places. [2024-11-28 05:09:54,466 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 386 flow [2024-11-28 05:09:54,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-11-28 05:09:54,467 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 38 predicate places. [2024-11-28 05:09:54,467 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 386 flow [2024-11-28 05:09:54,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:54,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:54,468 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:54,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:09:54,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:54,669 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:54,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash 419657038, now seen corresponding path program 1 times [2024-11-28 05:09:54,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:54,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303724989] [2024-11-28 05:09:54,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:54,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:09:54,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:54,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303724989] [2024-11-28 05:09:54,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303724989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:54,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444944598] [2024-11-28 05:09:54,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:54,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:54,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:54,859 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:54,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:09:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:55,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:09:55,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:55,210 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:55,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444944598] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:55,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:55,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2024-11-28 05:09:55,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844969230] [2024-11-28 05:09:55,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:55,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:09:55,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:55,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:09:55,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:09:55,387 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:55,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 386 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:55,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:55,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:55,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:56,106 INFO L124 PetriNetUnfolderBase]: 3078/4465 cut-off events. [2024-11-28 05:09:56,107 INFO L125 PetriNetUnfolderBase]: For 9020/9020 co-relation queries the response was YES. [2024-11-28 05:09:56,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15213 conditions, 4465 events. 3078/4465 cut-off events. For 9020/9020 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20245 event pairs, 1121 based on Foata normal form. 238/4702 useless extension candidates. Maximal degree in co-relation 15190. Up to 2348 conditions per place. [2024-11-28 05:09:56,129 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 64 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2024-11-28 05:09:56,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 78 transitions, 610 flow [2024-11-28 05:09:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:09:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:09:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-28 05:09:56,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29642857142857143 [2024-11-28 05:09:56,130 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 386 flow. Second operand 7 states and 83 transitions. [2024-11-28 05:09:56,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 78 transitions, 610 flow [2024-11-28 05:09:56,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 78 transitions, 583 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-28 05:09:56,149 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 383 flow [2024-11-28 05:09:56,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2024-11-28 05:09:56,150 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places. [2024-11-28 05:09:56,150 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 383 flow [2024-11-28 05:09:56,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:56,150 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:56,150 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:56,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:09:56,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 05:09:56,351 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:56,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:56,352 INFO L85 PathProgramCache]: Analyzing trace with hash 104022586, now seen corresponding path program 1 times [2024-11-28 05:09:56,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:56,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692855193] [2024-11-28 05:09:56,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:56,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:09:57,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:57,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692855193] [2024-11-28 05:09:57,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692855193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:57,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:57,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 05:09:57,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057416105] [2024-11-28 05:09:57,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:57,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:09:57,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:57,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:09:57,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:09:57,496 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:09:57,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 383 flow. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:57,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:57,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:09:57,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:59,279 INFO L124 PetriNetUnfolderBase]: 4784/6968 cut-off events. [2024-11-28 05:09:59,279 INFO L125 PetriNetUnfolderBase]: For 14419/14419 co-relation queries the response was YES. [2024-11-28 05:09:59,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23605 conditions, 6968 events. 4784/6968 cut-off events. For 14419/14419 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 36680 event pairs, 454 based on Foata normal form. 2/6969 useless extension candidates. Maximal degree in co-relation 23583. Up to 3480 conditions per place. [2024-11-28 05:09:59,375 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 189 selfloop transitions, 18 changer transitions 11/219 dead transitions. [2024-11-28 05:09:59,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 219 transitions, 1735 flow [2024-11-28 05:09:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:09:59,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 05:09:59,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 211 transitions. [2024-11-28 05:09:59,377 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40576923076923077 [2024-11-28 05:09:59,377 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 383 flow. Second operand 13 states and 211 transitions. [2024-11-28 05:09:59,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 219 transitions, 1735 flow [2024-11-28 05:09:59,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 219 transitions, 1637 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-28 05:09:59,419 INFO L231 Difference]: Finished difference. Result has 87 places, 68 transitions, 504 flow [2024-11-28 05:09:59,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=504, PETRI_PLACES=87, PETRI_TRANSITIONS=68} [2024-11-28 05:09:59,419 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2024-11-28 05:09:59,420 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 68 transitions, 504 flow [2024-11-28 05:09:59,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:59,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:59,420 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:59,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 05:09:59,421 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:59,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:59,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1837743048, now seen corresponding path program 2 times [2024-11-28 05:09:59,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:59,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171900646] [2024-11-28 05:09:59,422 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:09:59,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:59,510 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:59,511 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:10:01,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:01,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171900646] [2024-11-28 05:10:01,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171900646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:01,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662226102] [2024-11-28 05:10:01,659 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:10:01,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:01,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:01,664 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:01,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:10:01,846 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:10:01,847 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:01,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 05:10:01,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:02,556 INFO L349 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2024-11-28 05:10:02,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 41 [2024-11-28 05:10:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:10:02,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:08,294 INFO L349 Elim1Store]: treesize reduction 334, result has 76.4 percent of original size [2024-11-28 05:10:08,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 333 treesize of output 1157 [2024-11-28 05:14:14,235 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 05:14:14,238 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 05:14:14,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 05:14:14,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:14:14,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 05:14:14,442 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 68 more [2024-11-28 05:14:14,477 INFO L158 Benchmark]: Toolchain (without parser) took 319389.37ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 119.0MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. [2024-11-28 05:14:14,478 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 142.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:14:14,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.48ms. Allocated memory is still 142.6MB. Free memory was 118.7MB in the beginning and 106.2MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:14:14,484 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.29ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 103.7MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:14:14,485 INFO L158 Benchmark]: Boogie Preprocessor took 73.51ms. Allocated memory is still 142.6MB. Free memory was 103.7MB in the beginning and 101.1MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:14:14,486 INFO L158 Benchmark]: RCFGBuilder took 1547.82ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 81.4MB in the end (delta: 19.7MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. [2024-11-28 05:14:14,487 INFO L158 Benchmark]: TraceAbstraction took 317390.67ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 80.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 3.7GB. Max. memory is 16.1GB. [2024-11-28 05:14:14,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 142.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.48ms. Allocated memory is still 142.6MB. Free memory was 118.7MB in the beginning and 106.2MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.29ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 103.7MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.51ms. Allocated memory is still 142.6MB. Free memory was 103.7MB in the beginning and 101.1MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1547.82ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 81.4MB in the end (delta: 19.7MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. * TraceAbstraction took 317390.67ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 80.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 3.7GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:14:17,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:14:17,958 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 05:14:17,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:14:17,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:14:18,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:14:18,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:14:18,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:14:18,007 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:14:18,007 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:14:18,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:14:18,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:14:18,008 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:14:18,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:14:18,008 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:14:18,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:14:18,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:14:18,009 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:14:18,009 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:14:18,009 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:14:18,010 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:14:18,010 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:14:18,010 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:14:18,010 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:14:18,010 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 05:14:18,010 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 05:14:18,011 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:14:18,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:14:18,011 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:14:18,011 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:14:18,011 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:14:18,011 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:14:18,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:14:18,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:14:18,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:14:18,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:14:18,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:14:18,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:14:18,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:14:18,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:14:18,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:14:18,013 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:14:18,013 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:14:18,013 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:14:18,013 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 05:14:18,013 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 05:14:18,014 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:14:18,014 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:14:18,014 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:14:18,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:14:18,015 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2024-11-28 05:14:18,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:14:18,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:14:18,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:14:18,495 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:14:18,496 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:14:18,497 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-11-28 05:14:22,307 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/data/776a1688c/ac681e48438847eca7e31b9e8e30b0af/FLAG55e48e221 [2024-11-28 05:14:22,677 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:14:22,679 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-11-28 05:14:22,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/data/776a1688c/ac681e48438847eca7e31b9e8e30b0af/FLAG55e48e221 [2024-11-28 05:14:22,732 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/data/776a1688c/ac681e48438847eca7e31b9e8e30b0af [2024-11-28 05:14:22,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:14:22,740 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:14:22,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:14:22,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:14:22,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:14:22,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:14:22" (1/1) ... [2024-11-28 05:14:22,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28cbaf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:22, skipping insertion in model container [2024-11-28 05:14:22,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:14:22" (1/1) ... [2024-11-28 05:14:22,785 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:14:23,142 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2820,2833] [2024-11-28 05:14:23,164 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:14:23,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:14:23,206 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:14:23,266 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_730d37ce-065e-4d37-a8fc-028ac7e98fd7/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2820,2833] [2024-11-28 05:14:23,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:14:23,315 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:14:23,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23 WrapperNode [2024-11-28 05:14:23,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:14:23,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:14:23,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:14:23,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:14:23,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,427 INFO L138 Inliner]: procedures = 27, calls = 35, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 259 [2024-11-28 05:14:23,432 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:14:23,433 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:14:23,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:14:23,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:14:23,455 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,505 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 05:14:23,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,538 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,554 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:14:23,578 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:14:23,578 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:14:23,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:14:23,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (1/1) ... [2024-11-28 05:14:23,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:14:23,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:23,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:14:23,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:14:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:14:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 05:14:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 05:14:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 05:14:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 05:14:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 05:14:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 05:14:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 05:14:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 05:14:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 05:14:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 05:14:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:14:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:14:23,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:14:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 05:14:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 05:14:23,714 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:14:23,932 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:14:23,935 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:14:24,776 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:14:24,776 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:14:25,436 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:14:25,437 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 05:14:25,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:14:25 BoogieIcfgContainer [2024-11-28 05:14:25,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:14:25,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:14:25,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:14:25,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:14:25,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:14:22" (1/3) ... [2024-11-28 05:14:25,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207959c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:14:25, skipping insertion in model container [2024-11-28 05:14:25,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:23" (2/3) ... [2024-11-28 05:14:25,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207959c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:14:25, skipping insertion in model container [2024-11-28 05:14:25,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:14:25" (3/3) ... [2024-11-28 05:14:25,456 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2024-11-28 05:14:25,478 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:14:25,480 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-array-int-subst.wvr.c that has 4 procedures, 32 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-28 05:14:25,481 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:14:25,600 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 05:14:25,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2024-11-28 05:14:25,724 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-11-28 05:14:25,727 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 05:14:25,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-28 05:14:25,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2024-11-28 05:14:25,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2024-11-28 05:14:25,757 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:14:25,777 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;@7e36d07f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:14:25,778 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 05:14:25,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:14:25,809 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2024-11-28 05:14:25,810 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 05:14:25,810 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:14:25,811 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:14:25,811 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:14:25,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:25,821 INFO L85 PathProgramCache]: Analyzing trace with hash 137128845, now seen corresponding path program 1 times [2024-11-28 05:14:25,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:14:25,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [254570257] [2024-11-28 05:14:25,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:25,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:25,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:25,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:25,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:14:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:26,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 05:14:26,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:27,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:14:27,439 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:14:27,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254570257] [2024-11-28 05:14:27,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254570257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:27,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:27,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:14:27,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406111600] [2024-11-28 05:14:27,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:27,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:14:27,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:14:27,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:14:27,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:14:27,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:14:27,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:27,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:14:27,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:14:27,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:14:30,086 INFO L124 PetriNetUnfolderBase]: 2508/3453 cut-off events. [2024-11-28 05:14:30,086 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-11-28 05:14:30,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 3453 events. 2508/3453 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13723 event pairs, 764 based on Foata normal form. 1/2538 useless extension candidates. Maximal degree in co-relation 3982. Up to 1254 conditions per place. [2024-11-28 05:14:30,132 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 105 selfloop transitions, 12 changer transitions 1/119 dead transitions. [2024-11-28 05:14:30,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 119 transitions, 537 flow [2024-11-28 05:14:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:14:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:14:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-11-28 05:14:30,151 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-11-28 05:14:30,154 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 9 states and 155 transitions. [2024-11-28 05:14:30,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 119 transitions, 537 flow [2024-11-28 05:14:30,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 119 transitions, 495 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 05:14:30,174 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 163 flow [2024-11-28 05:14:30,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=163, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2024-11-28 05:14:30,182 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-11-28 05:14:30,182 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 163 flow [2024-11-28 05:14:30,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:30,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:14:30,183 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:14:30,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:14:30,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:30,384 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:14:30,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:30,385 INFO L85 PathProgramCache]: Analyzing trace with hash 175794667, now seen corresponding path program 1 times [2024-11-28 05:14:30,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:14:30,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068345522] [2024-11-28 05:14:30,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:30,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:30,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:30,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:30,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:14:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:30,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:14:30,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:31,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:14:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:31,676 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:14:31,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068345522] [2024-11-28 05:14:31,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068345522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:14:31,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:14:31,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-28 05:14:31,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415838598] [2024-11-28 05:14:31,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:14:31,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:14:31,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:14:31,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:14:31,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:14:31,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:14:31,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 163 flow. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:31,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:14:31,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:14:31,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:14:36,480 INFO L124 PetriNetUnfolderBase]: 7439/10238 cut-off events. [2024-11-28 05:14:36,481 INFO L125 PetriNetUnfolderBase]: For 1574/1574 co-relation queries the response was YES. [2024-11-28 05:14:36,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22956 conditions, 10238 events. 7439/10238 cut-off events. For 1574/1574 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 49680 event pairs, 3223 based on Foata normal form. 3/8457 useless extension candidates. Maximal degree in co-relation 16948. Up to 3452 conditions per place. [2024-11-28 05:14:36,599 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 218 selfloop transitions, 28 changer transitions 15/262 dead transitions. [2024-11-28 05:14:36,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 262 transitions, 1312 flow [2024-11-28 05:14:36,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:14:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 05:14:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 301 transitions. [2024-11-28 05:14:36,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5016666666666667 [2024-11-28 05:14:36,607 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 163 flow. Second operand 15 states and 301 transitions. [2024-11-28 05:14:36,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 262 transitions, 1312 flow [2024-11-28 05:14:36,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 262 transitions, 1306 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-28 05:14:36,626 INFO L231 Difference]: Finished difference. Result has 63 places, 77 transitions, 370 flow [2024-11-28 05:14:36,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=370, PETRI_PLACES=63, PETRI_TRANSITIONS=77} [2024-11-28 05:14:36,628 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2024-11-28 05:14:36,629 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 77 transitions, 370 flow [2024-11-28 05:14:36,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:36,629 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:14:36,629 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:14:36,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:14:36,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:36,830 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:14:36,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:36,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1080770693, now seen corresponding path program 1 times [2024-11-28 05:14:36,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:14:36,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490541948] [2024-11-28 05:14:36,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:36,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:36,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:36,836 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:36,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:14:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:37,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:14:37,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:37,171 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:14:37,171 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:14:37,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490541948] [2024-11-28 05:14:37,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490541948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:37,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:37,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:14:37,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96854235] [2024-11-28 05:14:37,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:37,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:14:37,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:14:37,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:14:37,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:14:37,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:14:37,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 77 transitions, 370 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:37,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:14:37,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:14:37,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:14:39,279 INFO L124 PetriNetUnfolderBase]: 7410/10265 cut-off events. [2024-11-28 05:14:39,280 INFO L125 PetriNetUnfolderBase]: For 2759/2759 co-relation queries the response was YES. [2024-11-28 05:14:39,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24096 conditions, 10265 events. 7410/10265 cut-off events. For 2759/2759 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 49659 event pairs, 3822 based on Foata normal form. 0/8970 useless extension candidates. Maximal degree in co-relation 20179. Up to 8105 conditions per place. [2024-11-28 05:14:39,376 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 117 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2024-11-28 05:14:39,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 123 transitions, 762 flow [2024-11-28 05:14:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:14:39,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:14:39,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-28 05:14:39,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-11-28 05:14:39,378 INFO L175 Difference]: Start difference. First operand has 63 places, 77 transitions, 370 flow. Second operand 5 states and 103 transitions. [2024-11-28 05:14:39,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 123 transitions, 762 flow [2024-11-28 05:14:39,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 123 transitions, 706 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-11-28 05:14:39,408 INFO L231 Difference]: Finished difference. Result has 66 places, 77 transitions, 335 flow [2024-11-28 05:14:39,410 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=66, PETRI_TRANSITIONS=77} [2024-11-28 05:14:39,411 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places. [2024-11-28 05:14:39,412 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 77 transitions, 335 flow [2024-11-28 05:14:39,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:39,413 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:14:39,413 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:14:39,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:14:39,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:39,614 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:14:39,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:39,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1094499715, now seen corresponding path program 1 times [2024-11-28 05:14:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:14:39,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399501433] [2024-11-28 05:14:39,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:39,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:39,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:39,623 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:39,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:14:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:39,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:14:39,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:39,942 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:14:39,942 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:14:39,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399501433] [2024-11-28 05:14:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399501433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:39,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:39,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:14:39,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911518085] [2024-11-28 05:14:39,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:39,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:14:39,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:14:39,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:14:39,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:14:39,945 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:14:39,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 77 transitions, 335 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:39,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:14:39,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:14:39,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:14:41,626 INFO L124 PetriNetUnfolderBase]: 7092/10088 cut-off events. [2024-11-28 05:14:41,626 INFO L125 PetriNetUnfolderBase]: For 4341/4341 co-relation queries the response was YES. [2024-11-28 05:14:41,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24470 conditions, 10088 events. 7092/10088 cut-off events. For 4341/4341 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 50893 event pairs, 2594 based on Foata normal form. 0/9040 useless extension candidates. Maximal degree in co-relation 22675. Up to 4214 conditions per place. [2024-11-28 05:14:41,722 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 112 selfloop transitions, 15 changer transitions 2/130 dead transitions. [2024-11-28 05:14:41,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 130 transitions, 793 flow [2024-11-28 05:14:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:14:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:14:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-11-28 05:14:41,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 05:14:41,725 INFO L175 Difference]: Start difference. First operand has 66 places, 77 transitions, 335 flow. Second operand 5 states and 100 transitions. [2024-11-28 05:14:41,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 130 transitions, 793 flow [2024-11-28 05:14:41,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 130 transitions, 779 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-28 05:14:41,742 INFO L231 Difference]: Finished difference. Result has 69 places, 79 transitions, 394 flow [2024-11-28 05:14:41,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=69, PETRI_TRANSITIONS=79} [2024-11-28 05:14:41,743 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-11-28 05:14:41,743 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 79 transitions, 394 flow [2024-11-28 05:14:41,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:41,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:14:41,744 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:14:41,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:14:41,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:41,945 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:14:41,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:41,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1545060830, now seen corresponding path program 1 times [2024-11-28 05:14:41,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:14:41,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482165932] [2024-11-28 05:14:41,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:41,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:41,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:41,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:41,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:14:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:42,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 05:14:42,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:43,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:14:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:46,367 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:14:46,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482165932] [2024-11-28 05:14:46,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482165932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:14:46,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:14:46,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-28 05:14:46,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149155662] [2024-11-28 05:14:46,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:14:46,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 05:14:46,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:14:46,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 05:14:46,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:14:46,369 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:14:46,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 394 flow. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:46,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:14:46,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:14:46,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:14:56,989 INFO L124 PetriNetUnfolderBase]: 8820/12644 cut-off events. [2024-11-28 05:14:56,989 INFO L125 PetriNetUnfolderBase]: For 7591/7591 co-relation queries the response was YES. [2024-11-28 05:14:57,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31249 conditions, 12644 events. 8820/12644 cut-off events. For 7591/7591 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 69188 event pairs, 1258 based on Foata normal form. 3/11410 useless extension candidates. Maximal degree in co-relation 31154. Up to 8137 conditions per place. [2024-11-28 05:14:57,072 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 240 selfloop transitions, 23 changer transitions 54/318 dead transitions. [2024-11-28 05:14:57,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 318 transitions, 1812 flow [2024-11-28 05:14:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 05:14:57,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 05:14:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 360 transitions. [2024-11-28 05:14:57,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-28 05:14:57,079 INFO L175 Difference]: Start difference. First operand has 69 places, 79 transitions, 394 flow. Second operand 21 states and 360 transitions. [2024-11-28 05:14:57,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 318 transitions, 1812 flow [2024-11-28 05:14:57,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 318 transitions, 1783 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-28 05:14:57,110 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 566 flow [2024-11-28 05:14:57,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=566, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2024-11-28 05:14:57,111 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 57 predicate places. [2024-11-28 05:14:57,111 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 566 flow [2024-11-28 05:14:57,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:57,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:14:57,112 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:14:57,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:14:57,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:57,313 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:14:57,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:57,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1820067195, now seen corresponding path program 1 times [2024-11-28 05:14:57,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:14:57,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345482267] [2024-11-28 05:14:57,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:57,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:57,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:57,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:57,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:14:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:57,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:14:57,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:58,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:14:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:58,407 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:14:58,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345482267] [2024-11-28 05:14:58,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345482267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:14:58,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:14:58,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-28 05:14:58,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854477496] [2024-11-28 05:14:58,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:14:58,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:14:58,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:14:58,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:14:58,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:14:58,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:14:58,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 566 flow. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:58,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:14:58,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:14:58,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:01,501 INFO L124 PetriNetUnfolderBase]: 9992/14380 cut-off events. [2024-11-28 05:15:01,501 INFO L125 PetriNetUnfolderBase]: For 15885/15885 co-relation queries the response was YES. [2024-11-28 05:15:01,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37212 conditions, 14380 events. 9992/14380 cut-off events. For 15885/15885 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 80588 event pairs, 5413 based on Foata normal form. 4/12966 useless extension candidates. Maximal degree in co-relation 37070. Up to 9182 conditions per place. [2024-11-28 05:15:01,605 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 215 selfloop transitions, 16 changer transitions 15/247 dead transitions. [2024-11-28 05:15:01,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 247 transitions, 1687 flow [2024-11-28 05:15:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:15:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:15:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 232 transitions. [2024-11-28 05:15:01,610 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-28 05:15:01,611 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 566 flow. Second operand 12 states and 232 transitions. [2024-11-28 05:15:01,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 247 transitions, 1687 flow [2024-11-28 05:15:01,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 247 transitions, 1599 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-11-28 05:15:01,717 INFO L231 Difference]: Finished difference. Result has 97 places, 103 transitions, 619 flow [2024-11-28 05:15:01,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=619, PETRI_PLACES=97, PETRI_TRANSITIONS=103} [2024-11-28 05:15:01,718 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 60 predicate places. [2024-11-28 05:15:01,720 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 103 transitions, 619 flow [2024-11-28 05:15:01,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:01,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:01,720 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:01,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:15:01,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:01,921 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:15:01,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:01,922 INFO L85 PathProgramCache]: Analyzing trace with hash -893864046, now seen corresponding path program 2 times [2024-11-28 05:15:01,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:01,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57352546] [2024-11-28 05:15:01,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:15:01,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:01,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:01,925 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:01,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:15:02,056 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:15:02,056 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:15:02,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 05:15:02,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:15:02,744 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:02,744 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:02,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57352546] [2024-11-28 05:15:02,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57352546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:02,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:02,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:15:02,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121057823] [2024-11-28 05:15:02,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:02,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:15:02,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:02,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:15:02,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:15:02,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:15:02,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 103 transitions, 619 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:02,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:15:02,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:15:02,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:05,597 INFO L124 PetriNetUnfolderBase]: 9992/14374 cut-off events. [2024-11-28 05:15:05,597 INFO L125 PetriNetUnfolderBase]: For 11822/11822 co-relation queries the response was YES. [2024-11-28 05:15:05,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37410 conditions, 14374 events. 9992/14374 cut-off events. For 11822/11822 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 80231 event pairs, 1698 based on Foata normal form. 3/12959 useless extension candidates. Maximal degree in co-relation 34183. Up to 12105 conditions per place. [2024-11-28 05:15:05,700 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 104 selfloop transitions, 10 changer transitions 50/165 dead transitions. [2024-11-28 05:15:05,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 165 transitions, 1175 flow [2024-11-28 05:15:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:15:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:15:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-11-28 05:15:05,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-11-28 05:15:05,702 INFO L175 Difference]: Start difference. First operand has 97 places, 103 transitions, 619 flow. Second operand 8 states and 125 transitions. [2024-11-28 05:15:05,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 165 transitions, 1175 flow [2024-11-28 05:15:05,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 165 transitions, 1143 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-28 05:15:05,753 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 524 flow [2024-11-28 05:15:05,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=524, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2024-11-28 05:15:05,754 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 65 predicate places. [2024-11-28 05:15:05,754 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 524 flow [2024-11-28 05:15:05,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:05,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:05,755 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:05,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:15:05,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:05,955 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:15:05,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1991085901, now seen corresponding path program 1 times [2024-11-28 05:15:05,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:05,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618039425] [2024-11-28 05:15:05,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:05,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:05,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:05,959 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:05,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:15:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:06,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:15:06,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:15:06,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:06,258 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:06,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618039425] [2024-11-28 05:15:06,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618039425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:06,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:06,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:15:06,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551853200] [2024-11-28 05:15:06,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:06,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:15:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:06,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:15:06,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:15:06,260 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:15:06,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:06,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:15:06,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:15:06,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:07,444 INFO L124 PetriNetUnfolderBase]: 7295/10457 cut-off events. [2024-11-28 05:15:07,444 INFO L125 PetriNetUnfolderBase]: For 9611/9611 co-relation queries the response was YES. [2024-11-28 05:15:07,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27347 conditions, 10457 events. 7295/10457 cut-off events. For 9611/9611 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 55179 event pairs, 3801 based on Foata normal form. 0/9445 useless extension candidates. Maximal degree in co-relation 27260. Up to 7723 conditions per place. [2024-11-28 05:15:07,517 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 70 selfloop transitions, 2 changer transitions 58/131 dead transitions. [2024-11-28 05:15:07,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 959 flow [2024-11-28 05:15:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:15:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:15:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-11-28 05:15:07,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.485 [2024-11-28 05:15:07,519 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 524 flow. Second operand 5 states and 97 transitions. [2024-11-28 05:15:07,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 959 flow [2024-11-28 05:15:07,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 131 transitions, 901 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-11-28 05:15:07,561 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 349 flow [2024-11-28 05:15:07,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=349, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-11-28 05:15:07,562 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-11-28 05:15:07,562 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 349 flow [2024-11-28 05:15:07,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:07,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:07,562 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:07,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:15:07,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:07,763 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:15:07,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:07,764 INFO L85 PathProgramCache]: Analyzing trace with hash 847756489, now seen corresponding path program 1 times [2024-11-28 05:15:07,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:07,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941685421] [2024-11-28 05:15:07,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:07,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:07,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:07,766 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:07,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:15:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:07,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 05:15:07,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:15:08,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:15:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:15:08,598 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:08,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941685421] [2024-11-28 05:15:08,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941685421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:15:08,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:15:08,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-11-28 05:15:08,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504507022] [2024-11-28 05:15:08,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:15:08,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:15:08,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:08,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:15:08,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:15:08,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:15:08,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 349 flow. Second operand has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:08,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:15:08,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:15:08,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:12,803 INFO L124 PetriNetUnfolderBase]: 13114/18419 cut-off events. [2024-11-28 05:15:12,803 INFO L125 PetriNetUnfolderBase]: For 10269/10269 co-relation queries the response was YES. [2024-11-28 05:15:12,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46369 conditions, 18419 events. 13114/18419 cut-off events. For 10269/10269 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 102432 event pairs, 4055 based on Foata normal form. 248/17151 useless extension candidates. Maximal degree in co-relation 46335. Up to 3335 conditions per place. [2024-11-28 05:15:12,920 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 259 selfloop transitions, 35 changer transitions 5/300 dead transitions. [2024-11-28 05:15:12,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 300 transitions, 1818 flow [2024-11-28 05:15:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:15:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 05:15:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 321 transitions. [2024-11-28 05:15:12,923 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47205882352941175 [2024-11-28 05:15:12,924 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 349 flow. Second operand 17 states and 321 transitions. [2024-11-28 05:15:12,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 300 transitions, 1818 flow [2024-11-28 05:15:13,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 300 transitions, 1643 flow, removed 74 selfloop flow, removed 14 redundant places. [2024-11-28 05:15:13,054 INFO L231 Difference]: Finished difference. Result has 78 places, 90 transitions, 470 flow [2024-11-28 05:15:13,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=470, PETRI_PLACES=78, PETRI_TRANSITIONS=90} [2024-11-28 05:15:13,055 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 41 predicate places. [2024-11-28 05:15:13,055 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 90 transitions, 470 flow [2024-11-28 05:15:13,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:13,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:13,055 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:13,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:15:13,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:13,256 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:15:13,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:13,257 INFO L85 PathProgramCache]: Analyzing trace with hash -665757311, now seen corresponding path program 1 times [2024-11-28 05:15:13,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:13,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569530715] [2024-11-28 05:15:13,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:13,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:13,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:13,262 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:13,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:15:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:13,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:15:13,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:15:13,556 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:13,556 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:13,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569530715] [2024-11-28 05:15:13,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569530715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:13,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:13,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:15:13,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85173438] [2024-11-28 05:15:13,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:13,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:15:13,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:13,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:15:13,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:15:13,558 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:15:13,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 90 transitions, 470 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:13,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:15:13,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:15:13,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:15,535 INFO L124 PetriNetUnfolderBase]: 10814/15204 cut-off events. [2024-11-28 05:15:15,535 INFO L125 PetriNetUnfolderBase]: For 8909/8909 co-relation queries the response was YES. [2024-11-28 05:15:15,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37805 conditions, 15204 events. 10814/15204 cut-off events. For 8909/8909 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 80192 event pairs, 5665 based on Foata normal form. 260/13296 useless extension candidates. Maximal degree in co-relation 36216. Up to 11610 conditions per place. [2024-11-28 05:15:15,624 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 102 selfloop transitions, 9 changer transitions 13/125 dead transitions. [2024-11-28 05:15:15,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 125 transitions, 825 flow [2024-11-28 05:15:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:15:15,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:15:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-11-28 05:15:15,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-28 05:15:15,625 INFO L175 Difference]: Start difference. First operand has 78 places, 90 transitions, 470 flow. Second operand 5 states and 96 transitions. [2024-11-28 05:15:15,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 125 transitions, 825 flow [2024-11-28 05:15:15,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 125 transitions, 803 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-28 05:15:15,679 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 370 flow [2024-11-28 05:15:15,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-11-28 05:15:15,680 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2024-11-28 05:15:15,680 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 370 flow [2024-11-28 05:15:15,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:15,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:15,681 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:15,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:15:15,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:15,881 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:15:15,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1085543175, now seen corresponding path program 1 times [2024-11-28 05:15:15,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:15,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173713608] [2024-11-28 05:15:15,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:15,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:15,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:15,888 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:15,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:15:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:16,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 05:15:16,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:16,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:15:16,403 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 05:15:16,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2024-11-28 05:15:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:15:16,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:15:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:15:16,698 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:16,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173713608] [2024-11-28 05:15:16,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173713608] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:15:16,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:15:16,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-28 05:15:16,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417450463] [2024-11-28 05:15:16,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:16,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:15:16,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:16,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:15:16,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:15:16,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:15:16,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:16,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:15:16,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:15:16,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:18,287 INFO L124 PetriNetUnfolderBase]: 8894/12328 cut-off events. [2024-11-28 05:15:18,288 INFO L125 PetriNetUnfolderBase]: For 7021/7021 co-relation queries the response was YES. [2024-11-28 05:15:18,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30771 conditions, 12328 events. 8894/12328 cut-off events. For 7021/7021 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 62807 event pairs, 3067 based on Foata normal form. 7/10520 useless extension candidates. Maximal degree in co-relation 30751. Up to 6669 conditions per place. [2024-11-28 05:15:18,385 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 80 selfloop transitions, 9 changer transitions 25/115 dead transitions. [2024-11-28 05:15:18,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 115 transitions, 717 flow [2024-11-28 05:15:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:15:18,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:15:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-28 05:15:18,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-28 05:15:18,387 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 370 flow. Second operand 4 states and 90 transitions. [2024-11-28 05:15:18,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 115 transitions, 717 flow [2024-11-28 05:15:18,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 115 transitions, 685 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-28 05:15:18,422 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 350 flow [2024-11-28 05:15:18,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=350, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-11-28 05:15:18,423 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2024-11-28 05:15:18,423 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 350 flow [2024-11-28 05:15:18,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:18,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:18,423 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:18,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 05:15:18,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:18,624 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:15:18,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:18,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1010558641, now seen corresponding path program 1 times [2024-11-28 05:15:18,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:18,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422333553] [2024-11-28 05:15:18,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:18,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:18,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:18,630 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:18,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:15:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:18,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 05:15:18,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:15:19,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:15:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:15:23,771 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:23,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422333553] [2024-11-28 05:15:23,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422333553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:15:23,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:15:23,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-11-28 05:15:23,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542440765] [2024-11-28 05:15:23,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:15:23,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:15:23,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:23,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:15:23,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:15:23,774 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:15:23,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 350 flow. Second operand has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:23,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:15:23,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:15:23,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:43,683 INFO L124 PetriNetUnfolderBase]: 18056/25037 cut-off events. [2024-11-28 05:15:43,684 INFO L125 PetriNetUnfolderBase]: For 23842/23842 co-relation queries the response was YES. [2024-11-28 05:15:43,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66262 conditions, 25037 events. 18056/25037 cut-off events. For 23842/23842 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 141819 event pairs, 1348 based on Foata normal form. 6/21431 useless extension candidates. Maximal degree in co-relation 66245. Up to 5112 conditions per place. [2024-11-28 05:15:43,774 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 350 selfloop transitions, 56 changer transitions 3/410 dead transitions. [2024-11-28 05:15:43,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 410 transitions, 2527 flow [2024-11-28 05:15:43,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 05:15:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-28 05:15:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 453 transitions. [2024-11-28 05:15:43,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4044642857142857 [2024-11-28 05:15:43,777 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 350 flow. Second operand 28 states and 453 transitions. [2024-11-28 05:15:43,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 410 transitions, 2527 flow [2024-11-28 05:15:43,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 410 transitions, 2359 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-28 05:15:43,826 INFO L231 Difference]: Finished difference. Result has 100 places, 110 transitions, 675 flow [2024-11-28 05:15:43,826 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=675, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2024-11-28 05:15:43,827 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 63 predicate places. [2024-11-28 05:15:43,827 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 110 transitions, 675 flow [2024-11-28 05:15:43,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:43,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:43,828 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:43,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 05:15:44,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:44,028 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:15:44,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:44,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1835175673, now seen corresponding path program 2 times [2024-11-28 05:15:44,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:44,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892824861] [2024-11-28 05:15:44,029 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:15:44,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:44,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:44,032 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:44,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:15:44,124 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:15:44,124 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:15:44,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 05:15:44,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:15:44,781 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:44,781 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:44,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892824861] [2024-11-28 05:15:44,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892824861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:44,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:44,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:15:44,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760096693] [2024-11-28 05:15:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:44,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:15:44,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:44,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:15:44,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:15:44,783 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:15:44,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 110 transitions, 675 flow. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:44,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:15:44,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:15:44,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:49,716 INFO L124 PetriNetUnfolderBase]: 28511/39379 cut-off events. [2024-11-28 05:15:49,716 INFO L125 PetriNetUnfolderBase]: For 43901/43901 co-relation queries the response was YES. [2024-11-28 05:15:49,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111117 conditions, 39379 events. 28511/39379 cut-off events. For 43901/43901 co-relation queries the response was YES. Maximal size of possible extension queue 1523. Compared 235783 event pairs, 8333 based on Foata normal form. 5/37455 useless extension candidates. Maximal degree in co-relation 111094. Up to 16165 conditions per place. [2024-11-28 05:15:49,950 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 293 selfloop transitions, 67 changer transitions 1/362 dead transitions. [2024-11-28 05:15:49,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 362 transitions, 2581 flow [2024-11-28 05:15:49,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:15:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 05:15:49,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 238 transitions. [2024-11-28 05:15:49,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4576923076923077 [2024-11-28 05:15:49,953 INFO L175 Difference]: Start difference. First operand has 100 places, 110 transitions, 675 flow. Second operand 13 states and 238 transitions. [2024-11-28 05:15:49,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 362 transitions, 2581 flow [2024-11-28 05:15:50,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 362 transitions, 2431 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-11-28 05:15:50,348 INFO L231 Difference]: Finished difference. Result has 112 places, 161 transitions, 1250 flow [2024-11-28 05:15:50,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1250, PETRI_PLACES=112, PETRI_TRANSITIONS=161} [2024-11-28 05:15:50,348 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 75 predicate places. [2024-11-28 05:15:50,349 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 161 transitions, 1250 flow [2024-11-28 05:15:50,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:50,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:50,349 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:50,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 05:15:50,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:50,550 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:15:50,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:50,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1497601221, now seen corresponding path program 3 times [2024-11-28 05:15:50,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:50,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138271502] [2024-11-28 05:15:50,551 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:15:50,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:50,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:50,553 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:50,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:15:50,657 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:15:50,657 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:15:50,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 05:15:50,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:15:51,449 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:51,449 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138271502] [2024-11-28 05:15:51,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138271502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:51,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:51,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:15:51,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353813253] [2024-11-28 05:15:51,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:51,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:15:51,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:51,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:15:51,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:15:51,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:15:51,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 161 transitions, 1250 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2024-11-28 05:15:51,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:15:51,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:15:51,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:15:58,416 INFO L124 PetriNetUnfolderBase]: 35935/49761 cut-off events. [2024-11-28 05:15:58,416 INFO L125 PetriNetUnfolderBase]: For 132325/132325 co-relation queries the response was YES. [2024-11-28 05:15:58,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163650 conditions, 49761 events. 35935/49761 cut-off events. For 132325/132325 co-relation queries the response was YES. Maximal size of possible extension queue 1957. Compared 306030 event pairs, 7528 based on Foata normal form. 7/47214 useless extension candidates. Maximal degree in co-relation 163618. Up to 16082 conditions per place. [2024-11-28 05:15:58,728 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 232 selfloop transitions, 104 changer transitions 1/338 dead transitions. [2024-11-28 05:15:58,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 338 transitions, 3063 flow [2024-11-28 05:15:58,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:15:58,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:15:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-11-28 05:15:58,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4068181818181818 [2024-11-28 05:15:58,730 INFO L175 Difference]: Start difference. First operand has 112 places, 161 transitions, 1250 flow. Second operand 11 states and 179 transitions. [2024-11-28 05:15:58,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 338 transitions, 3063 flow [2024-11-28 05:15:59,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 338 transitions, 3017 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-28 05:15:59,947 INFO L231 Difference]: Finished difference. Result has 126 places, 212 transitions, 2159 flow [2024-11-28 05:15:59,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2159, PETRI_PLACES=126, PETRI_TRANSITIONS=212} [2024-11-28 05:15:59,948 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 89 predicate places. [2024-11-28 05:15:59,948 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 212 transitions, 2159 flow [2024-11-28 05:15:59,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2024-11-28 05:15:59,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:15:59,949 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:59,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 05:16:00,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:00,149 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:16:00,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:00,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1183129265, now seen corresponding path program 4 times [2024-11-28 05:16:00,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:16:00,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228488093] [2024-11-28 05:16:00,150 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:16:00,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:00,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:00,152 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:00,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:16:00,243 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:16:00,243 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:00,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 05:16:00,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:16:01,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:16:01,560 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:16:01,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228488093] [2024-11-28 05:16:01,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228488093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:01,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:01,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:16:01,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965559812] [2024-11-28 05:16:01,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:01,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:16:01,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:16:01,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:16:01,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:16:01,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:16:01,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 212 transitions, 2159 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2024-11-28 05:16:01,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:01,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:16:01,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:15,949 INFO L124 PetriNetUnfolderBase]: 50238/70138 cut-off events. [2024-11-28 05:16:15,949 INFO L125 PetriNetUnfolderBase]: For 253601/253601 co-relation queries the response was YES. [2024-11-28 05:16:16,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244091 conditions, 70138 events. 50238/70138 cut-off events. For 253601/253601 co-relation queries the response was YES. Maximal size of possible extension queue 2906. Compared 464538 event pairs, 17260 based on Foata normal form. 12/66424 useless extension candidates. Maximal degree in co-relation 244053. Up to 37900 conditions per place. [2024-11-28 05:16:16,426 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 368 selfloop transitions, 129 changer transitions 4/502 dead transitions. [2024-11-28 05:16:16,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 502 transitions, 5576 flow [2024-11-28 05:16:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:16:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:16:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-11-28 05:16:16,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-11-28 05:16:16,429 INFO L175 Difference]: Start difference. First operand has 126 places, 212 transitions, 2159 flow. Second operand 9 states and 173 transitions. [2024-11-28 05:16:16,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 502 transitions, 5576 flow [2024-11-28 05:16:18,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 502 transitions, 5443 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-11-28 05:16:18,824 INFO L231 Difference]: Finished difference. Result has 137 places, 293 transitions, 3434 flow [2024-11-28 05:16:18,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3434, PETRI_PLACES=137, PETRI_TRANSITIONS=293} [2024-11-28 05:16:18,825 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 100 predicate places. [2024-11-28 05:16:18,826 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 293 transitions, 3434 flow [2024-11-28 05:16:18,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2024-11-28 05:16:18,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:18,826 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:18,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 05:16:19,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:19,027 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:16:19,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:19,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1918454763, now seen corresponding path program 5 times [2024-11-28 05:16:19,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:16:19,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451617103] [2024-11-28 05:16:19,028 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:16:19,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:19,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:19,030 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:19,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 05:16:19,158 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:16:19,159 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:19,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 05:16:19,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:16:20,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:16:23,211 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:16:23,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451617103] [2024-11-28 05:16:23,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451617103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:16:23,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:16:23,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-11-28 05:16:23,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526094060] [2024-11-28 05:16:23,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:16:23,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:16:23,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:16:23,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:16:23,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:16:23,213 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:16:23,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 293 transitions, 3434 flow. Second operand has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:23,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:23,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:16:23,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:51,285 INFO L124 PetriNetUnfolderBase]: 51483/72019 cut-off events. [2024-11-28 05:16:51,285 INFO L125 PetriNetUnfolderBase]: For 351416/351416 co-relation queries the response was YES. [2024-11-28 05:16:51,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280497 conditions, 72019 events. 51483/72019 cut-off events. For 351416/351416 co-relation queries the response was YES. Maximal size of possible extension queue 2978. Compared 478112 event pairs, 10363 based on Foata normal form. 12/68215 useless extension candidates. Maximal degree in co-relation 280453. Up to 24900 conditions per place. [2024-11-28 05:16:51,921 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 519 selfloop transitions, 164 changer transitions 3/687 dead transitions. [2024-11-28 05:16:51,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 687 transitions, 7866 flow [2024-11-28 05:16:51,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 05:16:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-28 05:16:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 447 transitions. [2024-11-28 05:16:51,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3991071428571429 [2024-11-28 05:16:51,926 INFO L175 Difference]: Start difference. First operand has 137 places, 293 transitions, 3434 flow. Second operand 28 states and 447 transitions. [2024-11-28 05:16:51,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 687 transitions, 7866 flow [2024-11-28 05:16:58,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 687 transitions, 7758 flow, removed 54 selfloop flow, removed 0 redundant places. [2024-11-28 05:16:58,064 INFO L231 Difference]: Finished difference. Result has 171 places, 341 transitions, 4752 flow [2024-11-28 05:16:58,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3356, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4752, PETRI_PLACES=171, PETRI_TRANSITIONS=341} [2024-11-28 05:16:58,065 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 134 predicate places. [2024-11-28 05:16:58,065 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 341 transitions, 4752 flow [2024-11-28 05:16:58,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.0) internal successors, (126), 18 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:58,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:58,065 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:58,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 05:16:58,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:58,266 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:16:58,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:58,266 INFO L85 PathProgramCache]: Analyzing trace with hash 101758625, now seen corresponding path program 2 times [2024-11-28 05:16:58,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:16:58,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727910363] [2024-11-28 05:16:58,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:16:58,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:58,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:58,269 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:58,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d37ce-065e-4d37-a8fc-028ac7e98fd7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 05:16:58,384 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:16:58,384 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:58,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 05:16:58,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 05:16:59,221 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:16:59,221 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:16:59,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727910363] [2024-11-28 05:16:59,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727910363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:59,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:59,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:16:59,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766645607] [2024-11-28 05:16:59,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:59,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:16:59,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:16:59,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:16:59,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:16:59,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-28 05:16:59,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 341 transitions, 4752 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:59,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:59,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-28 05:16:59,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand