./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC --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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:12:27,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:12:27,607 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:12:27,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:12:27,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:12:27,660 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:12:27,662 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:12:27,663 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:12:27,663 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:12:27,664 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:12:27,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:12:27,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:12:27,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:12:27,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:12:27,666 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:12:27,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:12:27,666 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:12:27,667 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:12:27,667 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:12:27,667 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:12:27,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:12:27,668 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:12:27,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:12:27,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:12:27,668 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:12:27,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:12:27,668 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:12:27,669 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:12:27,669 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:12:27,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:12:27,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:12:27,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:12:27,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:12:27,670 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:12:27,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:12:27,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:12:27,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:12:27,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:12:27,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:12:27,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:12:27,672 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:12:27,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:12:27,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:12:27,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:12:27,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:12:27,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:12:27,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:12:27,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:12:27,673 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_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC 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 -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2024-11-24 00:12:27,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:12:28,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:12:28,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:12:28,015 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:12:28,015 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:12:28,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-24 00:12:31,284 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/data/11c9f5b70/2e46fd15599c4e37a8881113a148894a/FLAG1d3e82d4f [2024-11-24 00:12:31,767 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:12:31,768 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-24 00:12:31,786 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/data/11c9f5b70/2e46fd15599c4e37a8881113a148894a/FLAG1d3e82d4f [2024-11-24 00:12:31,812 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/data/11c9f5b70/2e46fd15599c4e37a8881113a148894a [2024-11-24 00:12:31,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:12:31,817 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:12:31,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:12:31,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:12:31,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:12:31,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:12:31" (1/1) ... [2024-11-24 00:12:31,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65324113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:31, skipping insertion in model container [2024-11-24 00:12:31,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:12:31" (1/1) ... [2024-11-24 00:12:31,887 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:12:32,099 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_fa7e8066-372c-44b7-b2c6-27f4596841a3/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-11-24 00:12:32,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:12:32,298 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:12:32,320 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_fa7e8066-372c-44b7-b2c6-27f4596841a3/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-11-24 00:12:32,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:12:32,452 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:12:32,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32 WrapperNode [2024-11-24 00:12:32,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:12:32,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:12:32,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:12:32,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:12:32,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,532 INFO L138 Inliner]: procedures = 165, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 116 [2024-11-24 00:12:32,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:12:32,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:12:32,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:12:32,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:12:32,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,556 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,576 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2024-11-24 00:12:32,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,585 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,586 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:12:32,597 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:12:32,597 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:12:32,597 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:12:32,598 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (1/1) ... [2024-11-24 00:12:32,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:12:32,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:32,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:32,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:12:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:12:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:12:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-11-24 00:12:32,694 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-11-24 00:12:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:12:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:12:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-24 00:12:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:12:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:12:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:12:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-24 00:12:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:12:32,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:12:32,698 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 00:12:32,892 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:12:32,894 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:12:33,257 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 00:12:33,257 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:12:33,481 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:12:33,481 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 00:12:33,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:12:33 BoogieIcfgContainer [2024-11-24 00:12:33,482 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:12:33,485 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:12:33,485 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:12:33,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:12:33,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:12:31" (1/3) ... [2024-11-24 00:12:33,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@285b8679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:12:33, skipping insertion in model container [2024-11-24 00:12:33,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:32" (2/3) ... [2024-11-24 00:12:33,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@285b8679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:12:33, skipping insertion in model container [2024-11-24 00:12:33,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:12:33" (3/3) ... [2024-11-24 00:12:33,499 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-24 00:12:33,519 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:12:33,522 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i that has 2 procedures, 31 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2024-11-24 00:12:33,524 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 00:12:33,599 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-24 00:12:33,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 37 transitions, 78 flow [2024-11-24 00:12:33,696 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-11-24 00:12:33,699 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:12:33,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 7/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-11-24 00:12:33,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 37 transitions, 78 flow [2024-11-24 00:12:33,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 36 transitions, 75 flow [2024-11-24 00:12:33,722 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:12:33,738 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;@4dec12ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:12:33,738 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-24 00:12:33,752 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:12:33,752 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2024-11-24 00:12:33,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:12:33,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:33,753 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:33,753 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:33,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:33,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1886817449, now seen corresponding path program 1 times [2024-11-24 00:12:33,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:33,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936379041] [2024-11-24 00:12:33,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:34,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:34,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936379041] [2024-11-24 00:12:34,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936379041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:34,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:34,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:12:34,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821293443] [2024-11-24 00:12:34,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:34,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:12:34,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:34,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:12:34,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:12:34,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-24 00:12:34,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 75 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2024-11-24 00:12:34,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:34,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-24 00:12:34,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:34,253 INFO L124 PetriNetUnfolderBase]: 102/244 cut-off events. [2024-11-24 00:12:34,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:12:34,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 244 events. 102/244 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 942 event pairs, 66 based on Foata normal form. 21/221 useless extension candidates. Maximal degree in co-relation 421. Up to 182 conditions per place. [2024-11-24 00:12:34,262 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 21 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2024-11-24 00:12:34,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 109 flow [2024-11-24 00:12:34,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:12:34,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-24 00:12:34,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 49 transitions. [2024-11-24 00:12:34,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6621621621621622 [2024-11-24 00:12:34,287 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 75 flow. Second operand 2 states and 49 transitions. [2024-11-24 00:12:34,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 109 flow [2024-11-24 00:12:34,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:12:34,299 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 66 flow [2024-11-24 00:12:34,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-11-24 00:12:34,308 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2024-11-24 00:12:34,308 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 66 flow [2024-11-24 00:12:34,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2024-11-24 00:12:34,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:34,308 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:34,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:12:34,309 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:34,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:34,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1886849227, now seen corresponding path program 1 times [2024-11-24 00:12:34,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:34,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324187945] [2024-11-24 00:12:34,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:34,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:34,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:34,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324187945] [2024-11-24 00:12:34,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324187945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:34,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:34,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:12:34,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806821343] [2024-11-24 00:12:34,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:34,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:12:34,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:34,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:12:34,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:12:34,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-24 00:12:34,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-24 00:12:34,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:34,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-24 00:12:34,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:35,237 INFO L124 PetriNetUnfolderBase]: 218/450 cut-off events. [2024-11-24 00:12:35,238 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:12:35,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 450 events. 218/450 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1934 event pairs, 20 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 857. Up to 241 conditions per place. [2024-11-24 00:12:35,248 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 47 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-11-24 00:12:35,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 69 transitions, 264 flow [2024-11-24 00:12:35,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:12:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:12:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-11-24 00:12:35,251 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-11-24 00:12:35,251 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 66 flow. Second operand 6 states and 112 transitions. [2024-11-24 00:12:35,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 69 transitions, 264 flow [2024-11-24 00:12:35,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 69 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 00:12:35,256 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 168 flow [2024-11-24 00:12:35,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2024-11-24 00:12:35,258 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-11-24 00:12:35,258 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 168 flow [2024-11-24 00:12:35,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-24 00:12:35,259 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:35,259 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:35,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:12:35,259 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:35,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:35,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1637250564, now seen corresponding path program 1 times [2024-11-24 00:12:35,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:35,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610976828] [2024-11-24 00:12:35,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:35,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:35,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:35,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610976828] [2024-11-24 00:12:35,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610976828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:35,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:35,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:12:35,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008582208] [2024-11-24 00:12:35,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:35,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:12:35,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:35,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:12:35,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:12:35,503 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-24 00:12:35,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-24 00:12:35,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:35,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-24 00:12:35,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:35,900 INFO L124 PetriNetUnfolderBase]: 278/559 cut-off events. [2024-11-24 00:12:35,901 INFO L125 PetriNetUnfolderBase]: For 184/186 co-relation queries the response was YES. [2024-11-24 00:12:35,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1398 conditions, 559 events. 278/559 cut-off events. For 184/186 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2453 event pairs, 60 based on Foata normal form. 20/538 useless extension candidates. Maximal degree in co-relation 1390. Up to 303 conditions per place. [2024-11-24 00:12:35,907 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 58 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-11-24 00:12:35,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 89 transitions, 474 flow [2024-11-24 00:12:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:12:35,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:12:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-11-24 00:12:35,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-11-24 00:12:35,910 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 168 flow. Second operand 6 states and 108 transitions. [2024-11-24 00:12:35,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 89 transitions, 474 flow [2024-11-24 00:12:35,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 00:12:35,924 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 366 flow [2024-11-24 00:12:35,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2024-11-24 00:12:35,926 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2024-11-24 00:12:35,927 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 366 flow [2024-11-24 00:12:35,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-24 00:12:35,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:35,928 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:35,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:12:35,928 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:35,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:35,930 INFO L85 PathProgramCache]: Analyzing trace with hash 783858626, now seen corresponding path program 1 times [2024-11-24 00:12:35,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:35,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279004356] [2024-11-24 00:12:35,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:35,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:36,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:36,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279004356] [2024-11-24 00:12:36,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279004356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:36,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:36,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:12:36,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948520883] [2024-11-24 00:12:36,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:36,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:12:36,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:36,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:12:36,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:12:36,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-24 00:12:36,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 366 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:36,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:36,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-24 00:12:36,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:37,016 INFO L124 PetriNetUnfolderBase]: 399/859 cut-off events. [2024-11-24 00:12:37,016 INFO L125 PetriNetUnfolderBase]: For 1245/1262 co-relation queries the response was YES. [2024-11-24 00:12:37,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2743 conditions, 859 events. 399/859 cut-off events. For 1245/1262 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4788 event pairs, 86 based on Foata normal form. 16/819 useless extension candidates. Maximal degree in co-relation 2730. Up to 360 conditions per place. [2024-11-24 00:12:37,026 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 87 selfloop transitions, 27 changer transitions 0/127 dead transitions. [2024-11-24 00:12:37,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 127 transitions, 942 flow [2024-11-24 00:12:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:12:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:12:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-11-24 00:12:37,029 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6138996138996139 [2024-11-24 00:12:37,029 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 366 flow. Second operand 7 states and 159 transitions. [2024-11-24 00:12:37,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 127 transitions, 942 flow [2024-11-24 00:12:37,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 127 transitions, 942 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 00:12:37,054 INFO L231 Difference]: Finished difference. Result has 61 places, 76 transitions, 588 flow [2024-11-24 00:12:37,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=588, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2024-11-24 00:12:37,056 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2024-11-24 00:12:37,057 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 588 flow [2024-11-24 00:12:37,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:37,057 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:37,059 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:37,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:12:37,059 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:37,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:37,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1461957722, now seen corresponding path program 2 times [2024-11-24 00:12:37,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:37,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724047987] [2024-11-24 00:12:37,061 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:12:37,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:37,105 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:12:37,107 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:12:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:37,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:37,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724047987] [2024-11-24 00:12:37,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724047987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:37,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:37,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:12:37,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527258959] [2024-11-24 00:12:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:37,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:12:37,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:37,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:12:37,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:12:37,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-24 00:12:37,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 76 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2024-11-24 00:12:38,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:38,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-24 00:12:38,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:38,661 INFO L124 PetriNetUnfolderBase]: 468/945 cut-off events. [2024-11-24 00:12:38,661 INFO L125 PetriNetUnfolderBase]: For 1980/2011 co-relation queries the response was YES. [2024-11-24 00:12:38,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3469 conditions, 945 events. 468/945 cut-off events. For 1980/2011 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4965 event pairs, 104 based on Foata normal form. 32/971 useless extension candidates. Maximal degree in co-relation 3452. Up to 583 conditions per place. [2024-11-24 00:12:38,673 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 67 selfloop transitions, 61 changer transitions 0/136 dead transitions. [2024-11-24 00:12:38,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 136 transitions, 1241 flow [2024-11-24 00:12:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:12:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-24 00:12:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 196 transitions. [2024-11-24 00:12:38,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074844074844075 [2024-11-24 00:12:38,678 INFO L175 Difference]: Start difference. First operand has 61 places, 76 transitions, 588 flow. Second operand 13 states and 196 transitions. [2024-11-24 00:12:38,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 136 transitions, 1241 flow [2024-11-24 00:12:38,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 136 transitions, 1205 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 00:12:38,697 INFO L231 Difference]: Finished difference. Result has 74 places, 108 transitions, 999 flow [2024-11-24 00:12:38,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=999, PETRI_PLACES=74, PETRI_TRANSITIONS=108} [2024-11-24 00:12:38,698 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2024-11-24 00:12:38,701 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 108 transitions, 999 flow [2024-11-24 00:12:38,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2024-11-24 00:12:38,701 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:38,701 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:38,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:12:38,701 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:38,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:38,702 INFO L85 PathProgramCache]: Analyzing trace with hash 274750052, now seen corresponding path program 3 times [2024-11-24 00:12:38,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:38,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807408755] [2024-11-24 00:12:38,702 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:12:38,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:38,729 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 00:12:38,729 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:12:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:39,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:39,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807408755] [2024-11-24 00:12:39,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807408755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:39,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:39,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:12:39,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148630111] [2024-11-24 00:12:39,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:39,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:12:39,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:39,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:12:39,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:12:39,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-24 00:12:39,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 108 transitions, 999 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:39,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:39,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-24 00:12:39,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:39,738 INFO L124 PetriNetUnfolderBase]: 663/1434 cut-off events. [2024-11-24 00:12:39,740 INFO L125 PetriNetUnfolderBase]: For 3723/3748 co-relation queries the response was YES. [2024-11-24 00:12:39,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5529 conditions, 1434 events. 663/1434 cut-off events. For 3723/3748 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8215 event pairs, 138 based on Foata normal form. 16/1448 useless extension candidates. Maximal degree in co-relation 5509. Up to 531 conditions per place. [2024-11-24 00:12:39,756 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 128 selfloop transitions, 43 changer transitions 0/186 dead transitions. [2024-11-24 00:12:39,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 186 transitions, 1809 flow [2024-11-24 00:12:39,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:12:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:12:39,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-11-24 00:12:39,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-11-24 00:12:39,763 INFO L175 Difference]: Start difference. First operand has 74 places, 108 transitions, 999 flow. Second operand 7 states and 168 transitions. [2024-11-24 00:12:39,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 186 transitions, 1809 flow [2024-11-24 00:12:39,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 186 transitions, 1737 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-24 00:12:39,791 INFO L231 Difference]: Finished difference. Result has 80 places, 118 transitions, 1153 flow [2024-11-24 00:12:39,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1153, PETRI_PLACES=80, PETRI_TRANSITIONS=118} [2024-11-24 00:12:39,793 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2024-11-24 00:12:39,793 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 118 transitions, 1153 flow [2024-11-24 00:12:39,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:39,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:39,794 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:39,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:12:39,794 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:39,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash -658982458, now seen corresponding path program 4 times [2024-11-24 00:12:39,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:39,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365181533] [2024-11-24 00:12:39,796 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:12:39,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:39,817 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:12:39,818 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:12:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:39,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365181533] [2024-11-24 00:12:39,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365181533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:39,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:39,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:12:39,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339972969] [2024-11-24 00:12:39,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:39,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:12:39,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:39,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:12:39,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:12:39,944 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-24 00:12:39,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 118 transitions, 1153 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-24 00:12:39,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:39,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-24 00:12:39,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:40,498 INFO L124 PetriNetUnfolderBase]: 803/1743 cut-off events. [2024-11-24 00:12:40,499 INFO L125 PetriNetUnfolderBase]: For 5476/5557 co-relation queries the response was YES. [2024-11-24 00:12:40,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 1743 events. 803/1743 cut-off events. For 5476/5557 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10618 event pairs, 136 based on Foata normal form. 75/1804 useless extension candidates. Maximal degree in co-relation 7027. Up to 709 conditions per place. [2024-11-24 00:12:40,515 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 169 selfloop transitions, 27 changer transitions 0/214 dead transitions. [2024-11-24 00:12:40,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 214 transitions, 2384 flow [2024-11-24 00:12:40,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:12:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:12:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-24 00:12:40,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2024-11-24 00:12:40,520 INFO L175 Difference]: Start difference. First operand has 80 places, 118 transitions, 1153 flow. Second operand 5 states and 123 transitions. [2024-11-24 00:12:40,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 214 transitions, 2384 flow [2024-11-24 00:12:40,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 214 transitions, 2267 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-11-24 00:12:40,552 INFO L231 Difference]: Finished difference. Result has 85 places, 131 transitions, 1280 flow [2024-11-24 00:12:40,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=85, PETRI_TRANSITIONS=131} [2024-11-24 00:12:40,555 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2024-11-24 00:12:40,557 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 131 transitions, 1280 flow [2024-11-24 00:12:40,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-24 00:12:40,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:40,557 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:40,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:12:40,557 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:40,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:40,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1635116866, now seen corresponding path program 5 times [2024-11-24 00:12:40,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:40,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697239281] [2024-11-24 00:12:40,560 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:12:40,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:40,580 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:12:40,580 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:12:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:40,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:40,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697239281] [2024-11-24 00:12:40,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697239281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:40,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:40,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:12:40,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292118423] [2024-11-24 00:12:40,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:40,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:12:40,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:40,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:12:40,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:12:40,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-24 00:12:40,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 131 transitions, 1280 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:40,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:40,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-24 00:12:40,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:41,608 INFO L124 PetriNetUnfolderBase]: 822/1812 cut-off events. [2024-11-24 00:12:41,609 INFO L125 PetriNetUnfolderBase]: For 7100/7140 co-relation queries the response was YES. [2024-11-24 00:12:41,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8266 conditions, 1812 events. 822/1812 cut-off events. For 7100/7140 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11002 event pairs, 223 based on Foata normal form. 20/1826 useless extension candidates. Maximal degree in co-relation 8238. Up to 1065 conditions per place. [2024-11-24 00:12:41,631 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 144 selfloop transitions, 40 changer transitions 0/199 dead transitions. [2024-11-24 00:12:41,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 199 transitions, 2158 flow [2024-11-24 00:12:41,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:12:41,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:12:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-11-24 00:12:41,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.640926640926641 [2024-11-24 00:12:41,638 INFO L175 Difference]: Start difference. First operand has 85 places, 131 transitions, 1280 flow. Second operand 7 states and 166 transitions. [2024-11-24 00:12:41,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 199 transitions, 2158 flow [2024-11-24 00:12:41,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 199 transitions, 2135 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-24 00:12:41,676 INFO L231 Difference]: Finished difference. Result has 92 places, 139 transitions, 1495 flow [2024-11-24 00:12:41,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1495, PETRI_PLACES=92, PETRI_TRANSITIONS=139} [2024-11-24 00:12:41,681 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 59 predicate places. [2024-11-24 00:12:41,681 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 139 transitions, 1495 flow [2024-11-24 00:12:41,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:41,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:41,681 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:41,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:12:41,682 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:41,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:41,684 INFO L85 PathProgramCache]: Analyzing trace with hash -61344554, now seen corresponding path program 6 times [2024-11-24 00:12:41,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:41,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060081849] [2024-11-24 00:12:41,685 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 00:12:41,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:41,704 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 00:12:41,704 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:12:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:42,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:42,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060081849] [2024-11-24 00:12:42,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060081849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:42,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:42,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:12:42,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266039111] [2024-11-24 00:12:42,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:42,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:12:42,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:42,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:12:42,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:12:42,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-24 00:12:42,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 139 transitions, 1495 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2024-11-24 00:12:42,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:42,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-24 00:12:42,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:42,930 INFO L124 PetriNetUnfolderBase]: 921/1915 cut-off events. [2024-11-24 00:12:42,930 INFO L125 PetriNetUnfolderBase]: For 8293/8367 co-relation queries the response was YES. [2024-11-24 00:12:42,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8869 conditions, 1915 events. 921/1915 cut-off events. For 8293/8367 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11112 event pairs, 234 based on Foata normal form. 66/1966 useless extension candidates. Maximal degree in co-relation 8839. Up to 1354 conditions per place. [2024-11-24 00:12:42,953 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 103 selfloop transitions, 66 changer transitions 0/179 dead transitions. [2024-11-24 00:12:42,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 179 transitions, 2114 flow [2024-11-24 00:12:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:12:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-24 00:12:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-11-24 00:12:42,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-11-24 00:12:42,956 INFO L175 Difference]: Start difference. First operand has 92 places, 139 transitions, 1495 flow. Second operand 9 states and 150 transitions. [2024-11-24 00:12:42,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 179 transitions, 2114 flow [2024-11-24 00:12:42,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 179 transitions, 2004 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-24 00:12:42,998 INFO L231 Difference]: Finished difference. Result has 100 places, 154 transitions, 1761 flow [2024-11-24 00:12:42,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1761, PETRI_PLACES=100, PETRI_TRANSITIONS=154} [2024-11-24 00:12:42,999 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 67 predicate places. [2024-11-24 00:12:42,999 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 154 transitions, 1761 flow [2024-11-24 00:12:43,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2024-11-24 00:12:43,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:43,000 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:43,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:12:43,000 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:43,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1539984146, now seen corresponding path program 7 times [2024-11-24 00:12:43,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:43,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622134547] [2024-11-24 00:12:43,003 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 00:12:43,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:43,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:43,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622134547] [2024-11-24 00:12:43,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622134547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:43,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:43,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:12:43,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543508699] [2024-11-24 00:12:43,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:43,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:12:43,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:43,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:12:43,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:12:43,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-24 00:12:43,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 154 transitions, 1761 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2024-11-24 00:12:43,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:43,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-24 00:12:43,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:44,075 INFO L124 PetriNetUnfolderBase]: 776/1629 cut-off events. [2024-11-24 00:12:44,076 INFO L125 PetriNetUnfolderBase]: For 7074/7135 co-relation queries the response was YES. [2024-11-24 00:12:44,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7665 conditions, 1629 events. 776/1629 cut-off events. For 7074/7135 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9279 event pairs, 212 based on Foata normal form. 55/1668 useless extension candidates. Maximal degree in co-relation 7631. Up to 1192 conditions per place. [2024-11-24 00:12:44,093 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 105 selfloop transitions, 47 changer transitions 0/162 dead transitions. [2024-11-24 00:12:44,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 162 transitions, 1875 flow [2024-11-24 00:12:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:12:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 00:12:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-11-24 00:12:44,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-11-24 00:12:44,096 INFO L175 Difference]: Start difference. First operand has 100 places, 154 transitions, 1761 flow. Second operand 10 states and 166 transitions. [2024-11-24 00:12:44,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 162 transitions, 1875 flow [2024-11-24 00:12:44,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 162 transitions, 1808 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-24 00:12:44,126 INFO L231 Difference]: Finished difference. Result has 106 places, 137 transitions, 1504 flow [2024-11-24 00:12:44,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1504, PETRI_PLACES=106, PETRI_TRANSITIONS=137} [2024-11-24 00:12:44,127 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 73 predicate places. [2024-11-24 00:12:44,128 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 137 transitions, 1504 flow [2024-11-24 00:12:44,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2024-11-24 00:12:44,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:44,129 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:44,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:12:44,129 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:44,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:44,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1769826712, now seen corresponding path program 1 times [2024-11-24 00:12:44,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:44,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706873501] [2024-11-24 00:12:44,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:44,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:44,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:44,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706873501] [2024-11-24 00:12:44,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706873501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:44,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:44,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:12:44,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064303582] [2024-11-24 00:12:44,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:44,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:12:44,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:44,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:12:44,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:12:44,715 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-24 00:12:44,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 137 transitions, 1504 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 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) [2024-11-24 00:12:44,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:44,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-24 00:12:44,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:45,815 INFO L124 PetriNetUnfolderBase]: 1448/2956 cut-off events. [2024-11-24 00:12:45,816 INFO L125 PetriNetUnfolderBase]: For 14274/14389 co-relation queries the response was YES. [2024-11-24 00:12:45,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14152 conditions, 2956 events. 1448/2956 cut-off events. For 14274/14389 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17659 event pairs, 309 based on Foata normal form. 159/3090 useless extension candidates. Maximal degree in co-relation 14117. Up to 1284 conditions per place. [2024-11-24 00:12:45,845 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 211 selfloop transitions, 157 changer transitions 0/378 dead transitions. [2024-11-24 00:12:45,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 378 transitions, 4384 flow [2024-11-24 00:12:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:12:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-24 00:12:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 301 transitions. [2024-11-24 00:12:45,847 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5423423423423424 [2024-11-24 00:12:45,848 INFO L175 Difference]: Start difference. First operand has 106 places, 137 transitions, 1504 flow. Second operand 15 states and 301 transitions. [2024-11-24 00:12:45,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 378 transitions, 4384 flow [2024-11-24 00:12:45,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 378 transitions, 4221 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-24 00:12:45,894 INFO L231 Difference]: Finished difference. Result has 127 places, 267 transitions, 3439 flow [2024-11-24 00:12:45,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3439, PETRI_PLACES=127, PETRI_TRANSITIONS=267} [2024-11-24 00:12:45,896 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 94 predicate places. [2024-11-24 00:12:45,896 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 267 transitions, 3439 flow [2024-11-24 00:12:45,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 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) [2024-11-24 00:12:45,896 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:45,896 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:45,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:12:45,897 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:45,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:45,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1407839246, now seen corresponding path program 2 times [2024-11-24 00:12:45,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:45,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535522076] [2024-11-24 00:12:45,898 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:12:45,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:45,915 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:12:45,915 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:12:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:12:46,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:46,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535522076] [2024-11-24 00:12:46,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535522076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:46,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:46,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:12:46,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296966253] [2024-11-24 00:12:46,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:46,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:12:46,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:46,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:12:46,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:12:46,225 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-24 00:12:46,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 267 transitions, 3439 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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) [2024-11-24 00:12:46,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:46,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-24 00:12:46,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:47,573 INFO L124 PetriNetUnfolderBase]: 1836/3702 cut-off events. [2024-11-24 00:12:47,573 INFO L125 PetriNetUnfolderBase]: For 30882/30912 co-relation queries the response was YES. [2024-11-24 00:12:47,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21229 conditions, 3702 events. 1836/3702 cut-off events. For 30882/30912 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 22840 event pairs, 273 based on Foata normal form. 44/3745 useless extension candidates. Maximal degree in co-relation 21182. Up to 1297 conditions per place. [2024-11-24 00:12:47,615 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 276 selfloop transitions, 261 changer transitions 0/543 dead transitions. [2024-11-24 00:12:47,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 543 transitions, 7705 flow [2024-11-24 00:12:47,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:12:47,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-24 00:12:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 219 transitions. [2024-11-24 00:12:47,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42277992277992277 [2024-11-24 00:12:47,618 INFO L175 Difference]: Start difference. First operand has 127 places, 267 transitions, 3439 flow. Second operand 14 states and 219 transitions. [2024-11-24 00:12:47,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 543 transitions, 7705 flow [2024-11-24 00:12:47,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 543 transitions, 7619 flow, removed 43 selfloop flow, removed 0 redundant places. [2024-11-24 00:12:47,768 INFO L231 Difference]: Finished difference. Result has 152 places, 431 transitions, 6635 flow [2024-11-24 00:12:47,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6635, PETRI_PLACES=152, PETRI_TRANSITIONS=431} [2024-11-24 00:12:47,770 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 119 predicate places. [2024-11-24 00:12:47,771 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 431 transitions, 6635 flow [2024-11-24 00:12:47,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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) [2024-11-24 00:12:47,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:47,771 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:47,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:12:47,772 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:47,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1398008216, now seen corresponding path program 3 times [2024-11-24 00:12:47,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:47,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457837693] [2024-11-24 00:12:47,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:12:47,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:47,840 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 00:12:47,841 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:12:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:12:48,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:48,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457837693] [2024-11-24 00:12:48,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457837693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:48,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:48,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:12:48,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499810176] [2024-11-24 00:12:48,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:48,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:12:48,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:48,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:12:48,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:12:48,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-24 00:12:48,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 431 transitions, 6635 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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) [2024-11-24 00:12:48,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:48,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-24 00:12:48,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:49,844 INFO L124 PetriNetUnfolderBase]: 1924/3884 cut-off events. [2024-11-24 00:12:49,844 INFO L125 PetriNetUnfolderBase]: For 48350/48360 co-relation queries the response was YES. [2024-11-24 00:12:49,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25852 conditions, 3884 events. 1924/3884 cut-off events. For 48350/48360 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 24240 event pairs, 131 based on Foata normal form. 28/3911 useless extension candidates. Maximal degree in co-relation 25793. Up to 978 conditions per place. [2024-11-24 00:12:49,893 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 228 selfloop transitions, 399 changer transitions 0/633 dead transitions. [2024-11-24 00:12:49,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 633 transitions, 10410 flow [2024-11-24 00:12:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:12:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-24 00:12:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 259 transitions. [2024-11-24 00:12:49,898 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-11-24 00:12:49,898 INFO L175 Difference]: Start difference. First operand has 152 places, 431 transitions, 6635 flow. Second operand 17 states and 259 transitions. [2024-11-24 00:12:49,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 633 transitions, 10410 flow [2024-11-24 00:12:50,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 633 transitions, 10091 flow, removed 116 selfloop flow, removed 1 redundant places. [2024-11-24 00:12:50,377 INFO L231 Difference]: Finished difference. Result has 177 places, 551 transitions, 9520 flow [2024-11-24 00:12:50,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9520, PETRI_PLACES=177, PETRI_TRANSITIONS=551} [2024-11-24 00:12:50,379 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 144 predicate places. [2024-11-24 00:12:50,379 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 551 transitions, 9520 flow [2024-11-24 00:12:50,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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) [2024-11-24 00:12:50,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:50,380 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:50,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:12:50,380 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:50,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash 575301424, now seen corresponding path program 4 times [2024-11-24 00:12:50,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:50,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702132174] [2024-11-24 00:12:50,381 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:12:50,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:50,398 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:12:50,399 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:12:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:50,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:50,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702132174] [2024-11-24 00:12:50,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702132174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:50,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:50,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:12:50,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132864631] [2024-11-24 00:12:50,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:50,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:12:50,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:50,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:12:50,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:12:50,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-24 00:12:50,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 551 transitions, 9520 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:50,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:50,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-24 00:12:50,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:52,311 INFO L124 PetriNetUnfolderBase]: 2250/4725 cut-off events. [2024-11-24 00:12:52,312 INFO L125 PetriNetUnfolderBase]: For 66904/67108 co-relation queries the response was YES. [2024-11-24 00:12:52,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34161 conditions, 4725 events. 2250/4725 cut-off events. For 66904/67108 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 32483 event pairs, 150 based on Foata normal form. 173/4829 useless extension candidates. Maximal degree in co-relation 34092. Up to 1750 conditions per place. [2024-11-24 00:12:52,370 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 462 selfloop transitions, 258 changer transitions 0/796 dead transitions. [2024-11-24 00:12:52,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 796 transitions, 14932 flow [2024-11-24 00:12:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:12:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-24 00:12:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-11-24 00:12:52,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5777027027027027 [2024-11-24 00:12:52,372 INFO L175 Difference]: Start difference. First operand has 177 places, 551 transitions, 9520 flow. Second operand 8 states and 171 transitions. [2024-11-24 00:12:52,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 796 transitions, 14932 flow [2024-11-24 00:12:52,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 796 transitions, 14546 flow, removed 171 selfloop flow, removed 2 redundant places. [2024-11-24 00:12:52,986 INFO L231 Difference]: Finished difference. Result has 184 places, 603 transitions, 10564 flow [2024-11-24 00:12:52,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9246, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10564, PETRI_PLACES=184, PETRI_TRANSITIONS=603} [2024-11-24 00:12:52,987 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 151 predicate places. [2024-11-24 00:12:52,987 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 603 transitions, 10564 flow [2024-11-24 00:12:52,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:52,987 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:52,987 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:52,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:12:52,987 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:52,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:52,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1549711700, now seen corresponding path program 5 times [2024-11-24 00:12:52,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:52,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334080473] [2024-11-24 00:12:52,988 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:12:52,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:53,017 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:12:53,017 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:12:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:53,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:53,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334080473] [2024-11-24 00:12:53,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334080473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:12:53,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:12:53,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:12:53,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221222262] [2024-11-24 00:12:53,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:12:53,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:12:53,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:53,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:12:53,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:12:53,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-24 00:12:53,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 603 transitions, 10564 flow. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 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) [2024-11-24 00:12:53,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:12:53,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-24 00:12:53,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:12:57,901 INFO L124 PetriNetUnfolderBase]: 4544/9115 cut-off events. [2024-11-24 00:12:57,901 INFO L125 PetriNetUnfolderBase]: For 135419/135463 co-relation queries the response was YES. [2024-11-24 00:12:57,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69610 conditions, 9115 events. 4544/9115 cut-off events. For 135419/135463 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 67970 event pairs, 731 based on Foata normal form. 36/9117 useless extension candidates. Maximal degree in co-relation 69539. Up to 4169 conditions per place. [2024-11-24 00:12:57,991 INFO L140 encePairwiseOnDemand]: 21/37 looper letters, 799 selfloop transitions, 563 changer transitions 0/1368 dead transitions. [2024-11-24 00:12:57,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1368 transitions, 25748 flow [2024-11-24 00:12:57,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 00:12:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-24 00:12:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 326 transitions. [2024-11-24 00:12:57,993 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-11-24 00:12:57,993 INFO L175 Difference]: Start difference. First operand has 184 places, 603 transitions, 10564 flow. Second operand 18 states and 326 transitions. [2024-11-24 00:12:57,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1368 transitions, 25748 flow [2024-11-24 00:12:59,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 1368 transitions, 25166 flow, removed 134 selfloop flow, removed 3 redundant places. [2024-11-24 00:12:59,163 INFO L231 Difference]: Finished difference. Result has 212 places, 1074 transitions, 21314 flow [2024-11-24 00:12:59,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10290, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=21314, PETRI_PLACES=212, PETRI_TRANSITIONS=1074} [2024-11-24 00:12:59,164 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 179 predicate places. [2024-11-24 00:12:59,164 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 1074 transitions, 21314 flow [2024-11-24 00:12:59,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 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) [2024-11-24 00:12:59,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:12:59,164 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:59,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:12:59,165 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:12:59,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash 651054908, now seen corresponding path program 6 times [2024-11-24 00:12:59,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:59,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921541787] [2024-11-24 00:12:59,165 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 00:12:59,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:59,179 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 00:12:59,180 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:12:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:12:59,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:59,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921541787] [2024-11-24 00:12:59,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921541787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:12:59,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876103512] [2024-11-24 00:12:59,473 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 00:12:59,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:12:59,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:59,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:12:59,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:12:59,586 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 00:12:59,586 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:12:59,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-24 00:12:59,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:59,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2024-11-24 00:13:00,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-24 00:13:00,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:13:00,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:13:00,234 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-24 00:13:00,235 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 41 treesize of output 1 [2024-11-24 00:13:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:13:00,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876103512] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:13:00,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:13:00,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 18 [2024-11-24 00:13:00,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813069250] [2024-11-24 00:13:00,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:13:00,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:13:00,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:13:00,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:13:00,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:13:00,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-24 00:13:00,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 1074 transitions, 21314 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-24 00:13:00,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:13:00,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-24 00:13:00,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:13:05,953 INFO L124 PetriNetUnfolderBase]: 6082/12109 cut-off events. [2024-11-24 00:13:05,953 INFO L125 PetriNetUnfolderBase]: For 230033/230083 co-relation queries the response was YES. [2024-11-24 00:13:06,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101096 conditions, 12109 events. 6082/12109 cut-off events. For 230033/230083 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 93991 event pairs, 394 based on Foata normal form. 38/12128 useless extension candidates. Maximal degree in co-relation 101014. Up to 6070 conditions per place. [2024-11-24 00:13:06,090 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 771 selfloop transitions, 726 changer transitions 0/1503 dead transitions. [2024-11-24 00:13:06,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 1503 transitions, 32372 flow [2024-11-24 00:13:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:13:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-24 00:13:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-11-24 00:13:06,092 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-11-24 00:13:06,092 INFO L175 Difference]: Start difference. First operand has 212 places, 1074 transitions, 21314 flow. Second operand 8 states and 141 transitions. [2024-11-24 00:13:06,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 1503 transitions, 32372 flow [2024-11-24 00:13:09,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1503 transitions, 31820 flow, removed 276 selfloop flow, removed 0 redundant places. [2024-11-24 00:13:09,102 INFO L231 Difference]: Finished difference. Result has 225 places, 1383 transitions, 30447 flow [2024-11-24 00:13:09,103 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20954, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1074, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30447, PETRI_PLACES=225, PETRI_TRANSITIONS=1383} [2024-11-24 00:13:09,103 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 192 predicate places. [2024-11-24 00:13:09,103 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 1383 transitions, 30447 flow [2024-11-24 00:13:09,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-24 00:13:09,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:13:09,104 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:13:09,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:13:09,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:13:09,308 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:13:09,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:13:09,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1523289602, now seen corresponding path program 7 times [2024-11-24 00:13:09,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:13:09,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720130755] [2024-11-24 00:13:09,309 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 00:13:09,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:13:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:13:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:13:09,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:13:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720130755] [2024-11-24 00:13:09,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720130755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:13:09,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080564611] [2024-11-24 00:13:09,941 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 00:13:09,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:13:09,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:13:09,944 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:13:09,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:13:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:13:10,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 00:13:10,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:13:10,272 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2024-11-24 00:13:10,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 35 [2024-11-24 00:13:10,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:13:10,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 90 [2024-11-24 00:13:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:13:10,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:13:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:13:11,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080564611] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:13:11,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:13:11,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 8] total 19 [2024-11-24 00:13:11,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289454036] [2024-11-24 00:13:11,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:13:11,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:13:11,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:13:11,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:13:11,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:13:11,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-24 00:13:11,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 1383 transitions, 30447 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-24 00:13:11,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:13:11,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-24 00:13:11,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:13:18,521 INFO L124 PetriNetUnfolderBase]: 6037/12016 cut-off events. [2024-11-24 00:13:18,521 INFO L125 PetriNetUnfolderBase]: For 265134/265154 co-relation queries the response was YES. [2024-11-24 00:13:18,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107961 conditions, 12016 events. 6037/12016 cut-off events. For 265134/265154 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 92522 event pairs, 492 based on Foata normal form. 48/12061 useless extension candidates. Maximal degree in co-relation 107873. Up to 4616 conditions per place. [2024-11-24 00:13:18,672 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 821 selfloop transitions, 622 changer transitions 0/1448 dead transitions. [2024-11-24 00:13:18,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1448 transitions, 34219 flow [2024-11-24 00:13:18,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:13:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:13:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-11-24 00:13:18,673 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2024-11-24 00:13:18,673 INFO L175 Difference]: Start difference. First operand has 225 places, 1383 transitions, 30447 flow. Second operand 6 states and 97 transitions. [2024-11-24 00:13:18,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 1448 transitions, 34219 flow [2024-11-24 00:13:22,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 1448 transitions, 32496 flow, removed 146 selfloop flow, removed 11 redundant places. [2024-11-24 00:13:22,164 INFO L231 Difference]: Finished difference. Result has 218 places, 1385 transitions, 30593 flow [2024-11-24 00:13:22,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=28704, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=618, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=30593, PETRI_PLACES=218, PETRI_TRANSITIONS=1385} [2024-11-24 00:13:22,165 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 185 predicate places. [2024-11-24 00:13:22,165 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 1385 transitions, 30593 flow [2024-11-24 00:13:22,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-24 00:13:22,165 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:13:22,165 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:13:22,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:13:22,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:13:22,366 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:13:22,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:13:22,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1477972128, now seen corresponding path program 1 times [2024-11-24 00:13:22,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:13:22,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656070582] [2024-11-24 00:13:22,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:13:22,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:13:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:13:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:13:22,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:13:22,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656070582] [2024-11-24 00:13:22,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656070582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:13:22,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:13:22,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:13:22,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213257703] [2024-11-24 00:13:22,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:13:22,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:13:22,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:13:22,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:13:22,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:13:22,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-24 00:13:22,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 1385 transitions, 30593 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-11-24 00:13:22,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:13:22,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-24 00:13:22,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:13:30,907 INFO L124 PetriNetUnfolderBase]: 5524/11253 cut-off events. [2024-11-24 00:13:30,907 INFO L125 PetriNetUnfolderBase]: For 242194/242432 co-relation queries the response was YES. [2024-11-24 00:13:31,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102756 conditions, 11253 events. 5524/11253 cut-off events. For 242194/242432 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 88976 event pairs, 1209 based on Foata normal form. 14/11170 useless extension candidates. Maximal degree in co-relation 102677. Up to 9866 conditions per place. [2024-11-24 00:13:31,051 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 1168 selfloop transitions, 8 changer transitions 26/1353 dead transitions. [2024-11-24 00:13:31,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1353 transitions, 31973 flow [2024-11-24 00:13:31,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:13:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:13:31,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-11-24 00:13:31,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-11-24 00:13:31,053 INFO L175 Difference]: Start difference. First operand has 218 places, 1385 transitions, 30593 flow. Second operand 5 states and 95 transitions. [2024-11-24 00:13:31,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1353 transitions, 31973 flow [2024-11-24 00:13:33,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 1353 transitions, 30868 flow, removed 201 selfloop flow, removed 5 redundant places. [2024-11-24 00:13:33,634 INFO L231 Difference]: Finished difference. Result has 219 places, 1326 transitions, 28005 flow [2024-11-24 00:13:33,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=28399, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=28005, PETRI_PLACES=219, PETRI_TRANSITIONS=1326} [2024-11-24 00:13:33,636 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 186 predicate places. [2024-11-24 00:13:33,636 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 1326 transitions, 28005 flow [2024-11-24 00:13:33,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-11-24 00:13:33,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:13:33,636 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:13:33,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 00:13:33,636 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:13:33,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:13:33,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1280400519, now seen corresponding path program 1 times [2024-11-24 00:13:33,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:13:33,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406466418] [2024-11-24 00:13:33,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:13:33,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:13:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:13:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:13:33,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:13:33,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406466418] [2024-11-24 00:13:33,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406466418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:13:33,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730033828] [2024-11-24 00:13:33,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:13:33,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:13:33,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:13:33,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:13:33,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:13:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:13:34,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 00:13:34,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:13:34,132 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 13 treesize of output 9 [2024-11-24 00:13:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:13:34,191 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:13:34,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730033828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:13:34,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:13:34,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2024-11-24 00:13:34,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378416903] [2024-11-24 00:13:34,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:13:34,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:13:34,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:13:34,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:13:34,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:13:34,201 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-24 00:13:34,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 1326 transitions, 28005 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:13:34,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:13:34,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-24 00:13:34,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:13:40,550 INFO L124 PetriNetUnfolderBase]: 5344/11048 cut-off events. [2024-11-24 00:13:40,550 INFO L125 PetriNetUnfolderBase]: For 228593/229015 co-relation queries the response was YES. [2024-11-24 00:13:40,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96647 conditions, 11048 events. 5344/11048 cut-off events. For 228593/229015 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 88442 event pairs, 534 based on Foata normal form. 156/11100 useless extension candidates. Maximal degree in co-relation 96567. Up to 3895 conditions per place. [2024-11-24 00:13:40,717 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 1071 selfloop transitions, 392 changer transitions 0/1629 dead transitions. [2024-11-24 00:13:40,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 1629 transitions, 37694 flow [2024-11-24 00:13:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:13:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:13:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-11-24 00:13:40,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5495495495495496 [2024-11-24 00:13:40,718 INFO L175 Difference]: Start difference. First operand has 219 places, 1326 transitions, 28005 flow. Second operand 6 states and 122 transitions. [2024-11-24 00:13:40,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 1629 transitions, 37694 flow [2024-11-24 00:13:42,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1629 transitions, 36828 flow, removed 84 selfloop flow, removed 13 redundant places. [2024-11-24 00:13:42,882 INFO L231 Difference]: Finished difference. Result has 205 places, 1322 transitions, 27926 flow [2024-11-24 00:13:42,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=26957, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=920, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=27926, PETRI_PLACES=205, PETRI_TRANSITIONS=1322} [2024-11-24 00:13:42,883 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 172 predicate places. [2024-11-24 00:13:42,883 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 1322 transitions, 27926 flow [2024-11-24 00:13:42,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:13:42,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:13:42,884 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:13:42,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:13:43,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:13:43,085 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:13:43,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:13:43,085 INFO L85 PathProgramCache]: Analyzing trace with hash -441529031, now seen corresponding path program 2 times [2024-11-24 00:13:43,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:13:43,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103622325] [2024-11-24 00:13:43,085 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:13:43,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:13:43,105 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:13:43,105 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:13:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:13:43,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:13:43,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103622325] [2024-11-24 00:13:43,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103622325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:13:43,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801949985] [2024-11-24 00:13:43,603 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:13:43,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:13:43,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:13:43,605 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:13:43,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:13:43,716 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:13:43,716 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:13:43,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-24 00:13:43,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:13:43,822 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 11 treesize of output 7 [2024-11-24 00:13:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:13:43,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:13:43,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801949985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:13:43,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:13:43,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-11-24 00:13:43,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480240629] [2024-11-24 00:13:43,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:13:43,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:13:43,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:13:43,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:13:43,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:13:43,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-11-24 00:13:43,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 1322 transitions, 27926 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:13:43,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:13:43,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-11-24 00:13:43,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:13:45,923 INFO L124 PetriNetUnfolderBase]: 1449/3495 cut-off events. [2024-11-24 00:13:45,923 INFO L125 PetriNetUnfolderBase]: For 87307/87465 co-relation queries the response was YES. [2024-11-24 00:13:45,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32119 conditions, 3495 events. 1449/3495 cut-off events. For 87307/87465 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 24669 event pairs, 96 based on Foata normal form. 144/3601 useless extension candidates. Maximal degree in co-relation 32044. Up to 1005 conditions per place. [2024-11-24 00:13:45,956 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 378 selfloop transitions, 387 changer transitions 0/864 dead transitions. [2024-11-24 00:13:45,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 864 transitions, 21047 flow [2024-11-24 00:13:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:13:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:13:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-11-24 00:13:45,958 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-11-24 00:13:45,958 INFO L175 Difference]: Start difference. First operand has 205 places, 1322 transitions, 27926 flow. Second operand 7 states and 134 transitions. [2024-11-24 00:13:45,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 864 transitions, 21047 flow [2024-11-24 00:13:46,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 864 transitions, 17472 flow, removed 178 selfloop flow, removed 29 redundant places. [2024-11-24 00:13:46,403 INFO L231 Difference]: Finished difference. Result has 182 places, 851 transitions, 16893 flow [2024-11-24 00:13:46,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14391, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16893, PETRI_PLACES=182, PETRI_TRANSITIONS=851} [2024-11-24 00:13:46,404 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 149 predicate places. [2024-11-24 00:13:46,404 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 851 transitions, 16893 flow [2024-11-24 00:13:46,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:13:46,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:13:46,404 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:13:46,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:13:46,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:13:46,609 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:13:46,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:13:46,610 INFO L85 PathProgramCache]: Analyzing trace with hash 531075098, now seen corresponding path program 1 times [2024-11-24 00:13:46,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:13:46,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352402623] [2024-11-24 00:13:46,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:13:46,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:13:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:13:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:13:46,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:13:46,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352402623] [2024-11-24 00:13:46,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352402623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:13:46,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366357807] [2024-11-24 00:13:46,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:13:46,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:13:46,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:13:46,922 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:13:46,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:13:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:13:47,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-24 00:13:47,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:13:47,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-24 00:13:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:13:47,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:13:47,562 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-24 00:13:47,562 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 41 treesize of output 29 [2024-11-24 00:13:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:13:47,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366357807] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:13:47,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:13:47,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-11-24 00:13:47,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463115766] [2024-11-24 00:13:47,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:13:47,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 00:13:47,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:13:47,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 00:13:47,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:13:47,586 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-24 00:13:47,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 851 transitions, 16893 flow. Second operand has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 21 states have internal predecessors, (200), 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) [2024-11-24 00:13:47,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:13:47,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-24 00:13:47,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:13:49,886 INFO L124 PetriNetUnfolderBase]: 1549/3602 cut-off events. [2024-11-24 00:13:49,887 INFO L125 PetriNetUnfolderBase]: For 57973/58003 co-relation queries the response was YES. [2024-11-24 00:13:49,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30188 conditions, 3602 events. 1549/3602 cut-off events. For 57973/58003 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 24905 event pairs, 55 based on Foata normal form. 42/3643 useless extension candidates. Maximal degree in co-relation 30124. Up to 1325 conditions per place. [2024-11-24 00:13:49,901 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 0 selfloop transitions, 0 changer transitions 934/934 dead transitions. [2024-11-24 00:13:49,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 934 transitions, 20090 flow [2024-11-24 00:13:49,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:13:49,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 00:13:49,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-11-24 00:13:49,902 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34864864864864864 [2024-11-24 00:13:49,902 INFO L175 Difference]: Start difference. First operand has 182 places, 851 transitions, 16893 flow. Second operand 10 states and 129 transitions. [2024-11-24 00:13:49,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 934 transitions, 20090 flow [2024-11-24 00:13:50,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 934 transitions, 19110 flow, removed 264 selfloop flow, removed 6 redundant places. [2024-11-24 00:13:50,198 INFO L231 Difference]: Finished difference. Result has 183 places, 0 transitions, 0 flow [2024-11-24 00:13:50,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15990, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=849, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=183, PETRI_TRANSITIONS=0} [2024-11-24 00:13:50,199 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 150 predicate places. [2024-11-24 00:13:50,199 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 0 transitions, 0 flow [2024-11-24 00:13:50,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 21 states have internal predecessors, (200), 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) [2024-11-24 00:13:50,202 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-24 00:13:50,203 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-24 00:13:50,203 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-24 00:13:50,203 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-24 00:13:50,203 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-24 00:13:50,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:13:50,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-24 00:13:50,404 INFO L422 BasicCegarLoop]: Path program histogram: [7, 7, 2, 1, 1, 1, 1, 1] [2024-11-24 00:13:50,408 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-24 00:13:50,408 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:13:50,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:13:50 BasicIcfg [2024-11-24 00:13:50,414 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:13:50,414 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:13:50,414 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:13:50,415 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:13:50,415 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:12:33" (3/4) ... [2024-11-24 00:13:50,417 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-24 00:13:50,420 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2024-11-24 00:13:50,427 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2024-11-24 00:13:50,428 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-24 00:13:50,428 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-24 00:13:50,429 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-24 00:13:50,505 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 00:13:50,506 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 00:13:50,506 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:13:50,507 INFO L158 Benchmark]: Toolchain (without parser) took 78690.00ms. Allocated memory was 117.4MB in the beginning and 5.9GB in the end (delta: 5.8GB). Free memory was 90.9MB in the beginning and 4.6GB in the end (delta: -4.5GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-11-24 00:13:50,507 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:13:50,508 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.50ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 70.3MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-24 00:13:50,508 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.07ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 68.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:13:50,509 INFO L158 Benchmark]: Boogie Preprocessor took 62.45ms. Allocated memory is still 117.4MB. Free memory was 68.5MB in the beginning and 66.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:13:50,509 INFO L158 Benchmark]: RCFGBuilder took 885.42ms. Allocated memory is still 117.4MB. Free memory was 66.4MB in the beginning and 89.0MB in the end (delta: -22.6MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2024-11-24 00:13:50,510 INFO L158 Benchmark]: TraceAbstraction took 76929.27ms. Allocated memory was 117.4MB in the beginning and 5.9GB in the end (delta: 5.8GB). Free memory was 88.5MB in the beginning and 4.6GB in the end (delta: -4.5GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2024-11-24 00:13:50,510 INFO L158 Benchmark]: Witness Printer took 91.72ms. Allocated memory is still 5.9GB. Free memory was 4.6GB in the beginning and 4.6GB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:13:50,512 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 633.50ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 70.3MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.07ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 68.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 62.45ms. Allocated memory is still 117.4MB. Free memory was 68.5MB in the beginning and 66.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 885.42ms. Allocated memory is still 117.4MB. Free memory was 66.4MB in the beginning and 89.0MB in the end (delta: -22.6MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. * TraceAbstraction took 76929.27ms. Allocated memory was 117.4MB in the beginning and 5.9GB in the end (delta: 5.8GB). Free memory was 88.5MB in the beginning and 4.6GB in the end (delta: -4.5GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Witness Printer took 91.72ms. Allocated memory is still 5.9GB. Free memory was 4.6GB in the beginning and 4.6GB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 54 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 76.8s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 64.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1489 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1437 mSDsluCounter, 421 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 349 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4921 IncrementalHoareTripleChecker+Invalid, 5022 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 72 mSDtfsCounter, 4921 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 437 GetRequests, 200 SyntacticMatches, 6 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30593occurred in iteration=17, InterpolantAutomatonStates: 186, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 489 NumberOfCodeBlocks, 463 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 527 ConstructedInterpolants, 2 QuantifiedInterpolants, 3896 SizeOfPredicates, 63 NumberOfNonLiveVariables, 851 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 29 InterpolantComputations, 20 PerfectInterpolantSequences, 31/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-24 00:13:50,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7e8066-372c-44b7-b2c6-27f4596841a3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE