./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-easy1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:49:12,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:49:12,375 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 12:49:12,386 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:49:12,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:49:12,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:49:12,441 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:49:12,441 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:49:12,442 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 12:49:12,442 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 12:49:12,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:49:12,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:49:12,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:49:12,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:49:12,443 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:49:12,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:49:12,444 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:49:12,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:49:12,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:49:12,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:49:12,444 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 12:49:12,444 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 12:49:12,445 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 12:49:12,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:49:12,445 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 12:49:12,445 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:49:12,445 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 12:49:12,446 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:49:12,446 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:49:12,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:49:12,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:49:12,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:49:12,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:49:12,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:49:12,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:49:12,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:49:12,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:49:12,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:49:12,448 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:49:12,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:49:12,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:49:12,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:49:12,448 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_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2024-11-13 12:49:12,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:49:12,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:49:12,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:49:12,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:49:12,855 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:49:12,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/test-easy1.wvr.c Unable to find full path for "g++" [2024-11-13 12:49:14,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:49:15,139 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:49:15,144 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/sv-benchmarks/c/weaver/test-easy1.wvr.c [2024-11-13 12:49:15,161 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/data/2d80e85d4/ad9fdcd1743c440aa12d8cec057c9a97/FLAGfc5b843a0 [2024-11-13 12:49:15,205 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/data/2d80e85d4/ad9fdcd1743c440aa12d8cec057c9a97 [2024-11-13 12:49:15,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:49:15,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:49:15,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:49:15,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:49:15,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:49:15,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58cd108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15, skipping insertion in model container [2024-11-13 12:49:15,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,249 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:49:15,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:49:15,469 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:49:15,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:49:15,517 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:49:15,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15 WrapperNode [2024-11-13 12:49:15,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:49:15,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:49:15,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:49:15,520 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:49:15,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,555 INFO L138 Inliner]: procedures = 20, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2024-11-13 12:49:15,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:49:15,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:49:15,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:49:15,556 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:49:15,566 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,567 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,583 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 12:49:15,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,607 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:49:15,610 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:49:15,610 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:49:15,610 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:49:15,611 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (1/1) ... [2024-11-13 12:49:15,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:49:15,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:15,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:49:15,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:49:15,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:49:15,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 12:49:15,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 12:49:15,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 12:49:15,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 12:49:15,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 12:49:15,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:49:15,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:49:15,694 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 12:49:15,790 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:49:15,792 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:49:16,004 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 12:49:16,005 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:49:16,155 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:49:16,156 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 12:49:16,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:49:16 BoogieIcfgContainer [2024-11-13 12:49:16,156 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:49:16,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:49:16,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:49:16,166 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:49:16,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:49:15" (1/3) ... [2024-11-13 12:49:16,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f5ed89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:49:16, skipping insertion in model container [2024-11-13 12:49:16,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:15" (2/3) ... [2024-11-13 12:49:16,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f5ed89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:49:16, skipping insertion in model container [2024-11-13 12:49:16,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:49:16" (3/3) ... [2024-11-13 12:49:16,170 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2024-11-13 12:49:16,189 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:49:16,191 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy1.wvr.c that has 3 procedures, 19 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-13 12:49:16,191 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 12:49:16,263 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 12:49:16,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-11-13 12:49:16,353 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-13 12:49:16,355 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 12:49:16,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-13 12:49:16,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-11-13 12:49:16,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-11-13 12:49:16,373 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:49:16,388 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=None, 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;@361cddfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:49:16,388 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 12:49:16,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 12:49:16,399 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-13 12:49:16,399 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 12:49:16,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:16,400 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:16,400 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:16,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:16,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1477320214, now seen corresponding path program 1 times [2024-11-13 12:49:16,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:16,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463532433] [2024-11-13 12:49:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:16,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:16,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:16,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463532433] [2024-11-13 12:49:16,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463532433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:16,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:49:16,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:49:16,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873117900] [2024-11-13 12:49:16,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:16,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:49:16,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:16,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:49:16,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:49:16,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:16,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-11-13 12:49:16,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:16,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:16,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:16,971 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2024-11-13 12:49:16,971 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-13 12:49:16,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 59/104 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 286 event pairs, 8 based on Foata normal form. 2/69 useless extension candidates. Maximal degree in co-relation 179. Up to 77 conditions per place. [2024-11-13 12:49:16,974 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2024-11-13 12:49:16,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2024-11-13 12:49:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:49:16,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 12:49:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2024-11-13 12:49:16,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-11-13 12:49:16,992 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 41 transitions. [2024-11-13 12:49:16,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2024-11-13 12:49:16,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 12:49:17,001 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-11-13 12:49:17,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2024-11-13 12:49:17,009 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2024-11-13 12:49:17,009 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-11-13 12:49:17,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-11-13 12:49:17,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:17,009 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:17,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 12:49:17,010 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:17,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:17,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1706402872, now seen corresponding path program 1 times [2024-11-13 12:49:17,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:17,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11038944] [2024-11-13 12:49:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:17,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:17,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:17,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11038944] [2024-11-13 12:49:17,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11038944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:17,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:49:17,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:49:17,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133261117] [2024-11-13 12:49:17,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:17,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:49:17,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:17,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:49:17,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:49:17,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:17,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-13 12:49:17,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:17,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:17,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:17,357 INFO L124 PetriNetUnfolderBase]: 62/118 cut-off events. [2024-11-13 12:49:17,358 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-13 12:49:17,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 118 events. 62/118 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 341 event pairs, 6 based on Foata normal form. 4/118 useless extension candidates. Maximal degree in co-relation 112. Up to 56 conditions per place. [2024-11-13 12:49:17,361 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 25 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2024-11-13 12:49:17,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 35 transitions, 169 flow [2024-11-13 12:49:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:49:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 12:49:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-13 12:49:17,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-13 12:49:17,366 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 60 transitions. [2024-11-13 12:49:17,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 35 transitions, 169 flow [2024-11-13 12:49:17,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 35 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 12:49:17,370 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2024-11-13 12:49:17,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2024-11-13 12:49:17,371 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2024-11-13 12:49:17,372 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2024-11-13 12:49:17,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-13 12:49:17,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:17,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:17,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 12:49:17,373 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:17,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:17,374 INFO L85 PathProgramCache]: Analyzing trace with hash 439599998, now seen corresponding path program 2 times [2024-11-13 12:49:17,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:17,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121363069] [2024-11-13 12:49:17,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:17,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:17,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:17,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121363069] [2024-11-13 12:49:17,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121363069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:17,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911722532] [2024-11-13 12:49:17,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:49:17,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:17,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:17,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:17,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 12:49:17,637 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:49:17,637 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:17,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 12:49:17,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:17,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:17,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911722532] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:17,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 12:49:17,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2024-11-13 12:49:17,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668385814] [2024-11-13 12:49:17,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:17,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:49:17,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:17,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:49:17,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:49:17,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:17,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-13 12:49:17,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:17,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:17,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:17,967 INFO L124 PetriNetUnfolderBase]: 56/110 cut-off events. [2024-11-13 12:49:17,967 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-13 12:49:17,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 110 events. 56/110 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 313 event pairs, 8 based on Foata normal form. 5/111 useless extension candidates. Maximal degree in co-relation 244. Up to 46 conditions per place. [2024-11-13 12:49:17,969 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 22 selfloop transitions, 8 changer transitions 2/35 dead transitions. [2024-11-13 12:49:17,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 216 flow [2024-11-13 12:49:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:49:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 12:49:17,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2024-11-13 12:49:17,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-13 12:49:17,971 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 4 states and 52 transitions. [2024-11-13 12:49:17,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 216 flow [2024-11-13 12:49:17,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 12:49:17,974 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 127 flow [2024-11-13 12:49:17,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2024-11-13 12:49:17,975 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2024-11-13 12:49:17,975 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 127 flow [2024-11-13 12:49:17,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-13 12:49:17,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:17,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:18,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:18,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:18,180 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:18,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:18,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1446638315, now seen corresponding path program 1 times [2024-11-13 12:49:18,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:18,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440941384] [2024-11-13 12:49:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:18,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:18,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:18,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440941384] [2024-11-13 12:49:18,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440941384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:18,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:49:18,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:49:18,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125134550] [2024-11-13 12:49:18,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:18,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:49:18,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:18,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:49:18,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:49:18,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:18,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-13 12:49:18,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:18,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:18,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:18,457 INFO L124 PetriNetUnfolderBase]: 54/116 cut-off events. [2024-11-13 12:49:18,457 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2024-11-13 12:49:18,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 116 events. 54/116 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 330 event pairs, 4 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 220. Up to 44 conditions per place. [2024-11-13 12:49:18,459 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 29 selfloop transitions, 7 changer transitions 3/42 dead transitions. [2024-11-13 12:49:18,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 293 flow [2024-11-13 12:49:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:49:18,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 12:49:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-13 12:49:18,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-13 12:49:18,461 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 127 flow. Second operand 5 states and 63 transitions. [2024-11-13 12:49:18,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 293 flow [2024-11-13 12:49:18,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 261 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-13 12:49:18,465 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 161 flow [2024-11-13 12:49:18,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-11-13 12:49:18,466 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 11 predicate places. [2024-11-13 12:49:18,466 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 161 flow [2024-11-13 12:49:18,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-13 12:49:18,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:18,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:18,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 12:49:18,467 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:18,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:18,467 INFO L85 PathProgramCache]: Analyzing trace with hash -749710247, now seen corresponding path program 2 times [2024-11-13 12:49:18,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:18,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102303272] [2024-11-13 12:49:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:18,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:18,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:18,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102303272] [2024-11-13 12:49:18,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102303272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:18,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:49:18,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:49:18,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265523417] [2024-11-13 12:49:18,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:18,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:49:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:18,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:49:18,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:49:18,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:18,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-13 12:49:18,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:18,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:18,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:18,707 INFO L124 PetriNetUnfolderBase]: 43/93 cut-off events. [2024-11-13 12:49:18,707 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-11-13 12:49:18,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 93 events. 43/93 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 213 event pairs, 5 based on Foata normal form. 4/96 useless extension candidates. Maximal degree in co-relation 286. Up to 76 conditions per place. [2024-11-13 12:49:18,711 INFO L140 encePairwiseOnDemand]: 16/20 looper letters, 22 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2024-11-13 12:49:18,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 225 flow [2024-11-13 12:49:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:49:18,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 12:49:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2024-11-13 12:49:18,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-11-13 12:49:18,715 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 161 flow. Second operand 4 states and 46 transitions. [2024-11-13 12:49:18,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 225 flow [2024-11-13 12:49:18,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 219 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-13 12:49:18,723 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 163 flow [2024-11-13 12:49:18,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2024-11-13 12:49:18,724 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 14 predicate places. [2024-11-13 12:49:18,724 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 163 flow [2024-11-13 12:49:18,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-13 12:49:18,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:18,724 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:18,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 12:49:18,727 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:18,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1426468941, now seen corresponding path program 1 times [2024-11-13 12:49:18,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:18,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613791035] [2024-11-13 12:49:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:18,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:18,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:18,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613791035] [2024-11-13 12:49:18,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613791035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:18,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004425913] [2024-11-13 12:49:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:18,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:18,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:18,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:18,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 12:49:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:19,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 12:49:19,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:19,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:19,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:19,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004425913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:19,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:19,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-13 12:49:19,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494836886] [2024-11-13 12:49:19,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:19,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 12:49:19,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:19,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 12:49:19,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2024-11-13 12:49:19,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:19,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 163 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:19,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:19,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:19,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:19,819 INFO L124 PetriNetUnfolderBase]: 98/193 cut-off events. [2024-11-13 12:49:19,819 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-11-13 12:49:19,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 193 events. 98/193 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 639 event pairs, 0 based on Foata normal form. 17/209 useless extension candidates. Maximal degree in co-relation 448. Up to 76 conditions per place. [2024-11-13 12:49:19,825 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 19 changer transitions 8/68 dead transitions. [2024-11-13 12:49:19,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 549 flow [2024-11-13 12:49:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 12:49:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 12:49:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-11-13 12:49:19,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-11-13 12:49:19,829 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 163 flow. Second operand 9 states and 111 transitions. [2024-11-13 12:49:19,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 549 flow [2024-11-13 12:49:19,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 530 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-13 12:49:19,841 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 364 flow [2024-11-13 12:49:19,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=364, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-11-13 12:49:19,842 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 26 predicate places. [2024-11-13 12:49:19,842 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 364 flow [2024-11-13 12:49:19,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:19,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:19,842 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:19,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 12:49:20,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:20,045 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:20,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:20,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1315905915, now seen corresponding path program 2 times [2024-11-13 12:49:20,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:20,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875854308] [2024-11-13 12:49:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:20,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:20,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:20,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875854308] [2024-11-13 12:49:20,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875854308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:20,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792311116] [2024-11-13 12:49:20,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:49:20,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:20,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:20,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:20,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 12:49:20,307 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:49:20,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:20,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 12:49:20,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:20,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:20,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792311116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:20,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:20,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2024-11-13 12:49:20,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567314090] [2024-11-13 12:49:20,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:20,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 12:49:20,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:20,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 12:49:20,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:49:20,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:20,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 364 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) [2024-11-13 12:49:20,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:20,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:20,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:20,641 INFO L124 PetriNetUnfolderBase]: 128/257 cut-off events. [2024-11-13 12:49:20,641 INFO L125 PetriNetUnfolderBase]: For 1182/1182 co-relation queries the response was YES. [2024-11-13 12:49:20,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 257 events. 128/257 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 975 event pairs, 10 based on Foata normal form. 6/262 useless extension candidates. Maximal degree in co-relation 1303. Up to 157 conditions per place. [2024-11-13 12:49:20,646 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 50 selfloop transitions, 17 changer transitions 1/71 dead transitions. [2024-11-13 12:49:20,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 741 flow [2024-11-13 12:49:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:49:20,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 12:49:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-11-13 12:49:20,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-11-13 12:49:20,648 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 364 flow. Second operand 6 states and 77 transitions. [2024-11-13 12:49:20,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 741 flow [2024-11-13 12:49:20,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 71 transitions, 664 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-11-13 12:49:20,659 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 484 flow [2024-11-13 12:49:20,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=484, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-13 12:49:20,660 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2024-11-13 12:49:20,660 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 484 flow [2024-11-13 12:49:20,660 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) [2024-11-13 12:49:20,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:20,660 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:20,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 12:49:20,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:20,861 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:20,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:20,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1269788904, now seen corresponding path program 3 times [2024-11-13 12:49:20,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:20,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037058315] [2024-11-13 12:49:20,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:20,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:20,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:20,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037058315] [2024-11-13 12:49:20,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037058315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:20,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895270699] [2024-11-13 12:49:20,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:49:20,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:20,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:20,991 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:20,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 12:49:21,061 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 12:49:21,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:21,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 12:49:21,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:21,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:21,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895270699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:21,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:21,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-13 12:49:21,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45875670] [2024-11-13 12:49:21,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:21,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 12:49:21,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 12:49:21,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-13 12:49:21,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:21,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 484 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2024-11-13 12:49:21,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:21,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:21,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:21,527 INFO L124 PetriNetUnfolderBase]: 145/307 cut-off events. [2024-11-13 12:49:21,528 INFO L125 PetriNetUnfolderBase]: For 2165/2165 co-relation queries the response was YES. [2024-11-13 12:49:21,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 307 events. 145/307 cut-off events. For 2165/2165 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1279 event pairs, 3 based on Foata normal form. 15/321 useless extension candidates. Maximal degree in co-relation 928. Up to 105 conditions per place. [2024-11-13 12:49:21,534 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 54 selfloop transitions, 28 changer transitions 8/93 dead transitions. [2024-11-13 12:49:21,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 93 transitions, 1012 flow [2024-11-13 12:49:21,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 12:49:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 12:49:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-11-13 12:49:21,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-11-13 12:49:21,537 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 484 flow. Second operand 9 states and 107 transitions. [2024-11-13 12:49:21,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 93 transitions, 1012 flow [2024-11-13 12:49:21,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 93 transitions, 991 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-13 12:49:21,556 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 737 flow [2024-11-13 12:49:21,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=737, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-11-13 12:49:21,558 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 42 predicate places. [2024-11-13 12:49:21,561 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 737 flow [2024-11-13 12:49:21,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2024-11-13 12:49:21,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:21,561 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:21,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:21,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:21,762 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:21,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:21,763 INFO L85 PathProgramCache]: Analyzing trace with hash 53163104, now seen corresponding path program 4 times [2024-11-13 12:49:21,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:21,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972305895] [2024-11-13 12:49:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:21,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:21,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:21,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972305895] [2024-11-13 12:49:21,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972305895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:21,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439880129] [2024-11-13 12:49:21,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:49:21,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:21,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:21,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:21,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 12:49:21,917 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:49:21,917 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:21,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 12:49:21,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:22,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:22,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439880129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:22,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:22,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-13 12:49:22,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767609146] [2024-11-13 12:49:22,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:22,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 12:49:22,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 12:49:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-13 12:49:22,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:22,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 737 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2024-11-13 12:49:22,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:22,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:22,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:22,429 INFO L124 PetriNetUnfolderBase]: 141/305 cut-off events. [2024-11-13 12:49:22,429 INFO L125 PetriNetUnfolderBase]: For 2766/2766 co-relation queries the response was YES. [2024-11-13 12:49:22,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 305 events. 141/305 cut-off events. For 2766/2766 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1298 event pairs, 2 based on Foata normal form. 4/308 useless extension candidates. Maximal degree in co-relation 1597. Up to 92 conditions per place. [2024-11-13 12:49:22,437 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 59 selfloop transitions, 40 changer transitions 0/102 dead transitions. [2024-11-13 12:49:22,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 102 transitions, 1245 flow [2024-11-13 12:49:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 12:49:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 12:49:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-11-13 12:49:22,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-11-13 12:49:22,439 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 737 flow. Second operand 11 states and 128 transitions. [2024-11-13 12:49:22,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 102 transitions, 1245 flow [2024-11-13 12:49:22,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 1142 flow, removed 50 selfloop flow, removed 1 redundant places. [2024-11-13 12:49:22,463 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 924 flow [2024-11-13 12:49:22,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=924, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-13 12:49:22,464 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 55 predicate places. [2024-11-13 12:49:22,464 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 924 flow [2024-11-13 12:49:22,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2024-11-13 12:49:22,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:22,466 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:22,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 12:49:22,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:22,666 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:22,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:22,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1200402440, now seen corresponding path program 5 times [2024-11-13 12:49:22,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:22,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863373731] [2024-11-13 12:49:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:22,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:22,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:22,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863373731] [2024-11-13 12:49:22,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863373731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:22,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778532265] [2024-11-13 12:49:22,763 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 12:49:22,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:22,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:22,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:22,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 12:49:22,835 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:49:22,835 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:22,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 12:49:22,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:22,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:23,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778532265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:23,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:23,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-13 12:49:23,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976343511] [2024-11-13 12:49:23,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:23,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 12:49:23,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:23,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 12:49:23,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-13 12:49:23,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:23,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 924 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2024-11-13 12:49:23,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:23,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:23,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:23,318 INFO L124 PetriNetUnfolderBase]: 179/395 cut-off events. [2024-11-13 12:49:23,318 INFO L125 PetriNetUnfolderBase]: For 3668/3668 co-relation queries the response was YES. [2024-11-13 12:49:23,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 395 events. 179/395 cut-off events. For 3668/3668 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1793 event pairs, 5 based on Foata normal form. 10/404 useless extension candidates. Maximal degree in co-relation 2177. Up to 171 conditions per place. [2024-11-13 12:49:23,324 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 67 selfloop transitions, 48 changer transitions 0/118 dead transitions. [2024-11-13 12:49:23,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 118 transitions, 1702 flow [2024-11-13 12:49:23,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 12:49:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 12:49:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-11-13 12:49:23,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5541666666666667 [2024-11-13 12:49:23,326 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 924 flow. Second operand 12 states and 133 transitions. [2024-11-13 12:49:23,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 118 transitions, 1702 flow [2024-11-13 12:49:23,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 118 transitions, 1543 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-11-13 12:49:23,346 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 1354 flow [2024-11-13 12:49:23,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1354, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2024-11-13 12:49:23,347 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 68 predicate places. [2024-11-13 12:49:23,347 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 1354 flow [2024-11-13 12:49:23,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2024-11-13 12:49:23,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:23,348 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:23,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:23,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 12:49:23,549 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:23,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:23,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1673015499, now seen corresponding path program 6 times [2024-11-13 12:49:23,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:23,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239603120] [2024-11-13 12:49:23,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:23,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:23,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:23,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239603120] [2024-11-13 12:49:23,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239603120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:23,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086912027] [2024-11-13 12:49:23,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 12:49:23,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:23,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:23,620 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:23,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 12:49:23,682 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-13 12:49:23,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:23,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 12:49:23,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:23,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:23,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086912027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:23,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:23,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-13 12:49:23,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962724397] [2024-11-13 12:49:23,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:23,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 12:49:23,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:23,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 12:49:23,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-13 12:49:23,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:23,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 1354 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2024-11-13 12:49:23,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:23,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:23,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:24,053 INFO L124 PetriNetUnfolderBase]: 201/451 cut-off events. [2024-11-13 12:49:24,054 INFO L125 PetriNetUnfolderBase]: For 5106/5106 co-relation queries the response was YES. [2024-11-13 12:49:24,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 451 events. 201/451 cut-off events. For 5106/5106 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2198 event pairs, 10 based on Foata normal form. 8/458 useless extension candidates. Maximal degree in co-relation 2603. Up to 133 conditions per place. [2024-11-13 12:49:24,059 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 83 selfloop transitions, 42 changer transitions 7/135 dead transitions. [2024-11-13 12:49:24,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 135 transitions, 2123 flow [2024-11-13 12:49:24,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 12:49:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 12:49:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-11-13 12:49:24,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5722222222222222 [2024-11-13 12:49:24,061 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 1354 flow. Second operand 9 states and 103 transitions. [2024-11-13 12:49:24,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 135 transitions, 2123 flow [2024-11-13 12:49:24,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 135 transitions, 1969 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-11-13 12:49:24,092 INFO L231 Difference]: Finished difference. Result has 99 places, 105 transitions, 1636 flow [2024-11-13 12:49:24,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1636, PETRI_PLACES=99, PETRI_TRANSITIONS=105} [2024-11-13 12:49:24,093 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 77 predicate places. [2024-11-13 12:49:24,093 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 105 transitions, 1636 flow [2024-11-13 12:49:24,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2024-11-13 12:49:24,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:24,094 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:24,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:24,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 12:49:24,295 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:24,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:24,296 INFO L85 PathProgramCache]: Analyzing trace with hash -18453883, now seen corresponding path program 7 times [2024-11-13 12:49:24,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:24,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292025761] [2024-11-13 12:49:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:24,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:24,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:24,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292025761] [2024-11-13 12:49:24,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292025761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:24,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426555840] [2024-11-13 12:49:24,372 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 12:49:24,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:24,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:24,375 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:24,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 12:49:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:24,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 12:49:24,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:24,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:24,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426555840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:24,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:24,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-13 12:49:24,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770195094] [2024-11-13 12:49:24,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:24,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 12:49:24,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:24,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 12:49:24,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-13 12:49:24,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:24,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 105 transitions, 1636 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2024-11-13 12:49:24,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:24,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:24,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:24,899 INFO L124 PetriNetUnfolderBase]: 214/480 cut-off events. [2024-11-13 12:49:24,900 INFO L125 PetriNetUnfolderBase]: For 6164/6164 co-relation queries the response was YES. [2024-11-13 12:49:24,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3369 conditions, 480 events. 214/480 cut-off events. For 6164/6164 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2396 event pairs, 3 based on Foata normal form. 5/484 useless extension candidates. Maximal degree in co-relation 3164. Up to 150 conditions per place. [2024-11-13 12:49:24,906 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 93 selfloop transitions, 57 changer transitions 1/154 dead transitions. [2024-11-13 12:49:24,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 154 transitions, 2392 flow [2024-11-13 12:49:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 12:49:24,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 12:49:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-11-13 12:49:24,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5863636363636363 [2024-11-13 12:49:24,909 INFO L175 Difference]: Start difference. First operand has 99 places, 105 transitions, 1636 flow. Second operand 11 states and 129 transitions. [2024-11-13 12:49:24,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 154 transitions, 2392 flow [2024-11-13 12:49:24,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 154 transitions, 2263 flow, removed 63 selfloop flow, removed 1 redundant places. [2024-11-13 12:49:24,947 INFO L231 Difference]: Finished difference. Result has 112 places, 118 transitions, 1933 flow [2024-11-13 12:49:24,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1933, PETRI_PLACES=112, PETRI_TRANSITIONS=118} [2024-11-13 12:49:24,951 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 90 predicate places. [2024-11-13 12:49:24,951 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 118 transitions, 1933 flow [2024-11-13 12:49:24,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2024-11-13 12:49:24,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:24,952 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:24,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:25,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 12:49:25,153 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:25,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1410415442, now seen corresponding path program 8 times [2024-11-13 12:49:25,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:25,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003835010] [2024-11-13 12:49:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:25,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:25,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:25,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003835010] [2024-11-13 12:49:25,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003835010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:25,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868538175] [2024-11-13 12:49:25,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:49:25,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:25,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:25,222 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:25,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 12:49:25,284 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:49:25,285 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:25,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 12:49:25,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:25,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:25,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868538175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:25,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:25,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-13 12:49:25,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915117859] [2024-11-13 12:49:25,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:25,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 12:49:25,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:25,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 12:49:25,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-13 12:49:25,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:25,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 118 transitions, 1933 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2024-11-13 12:49:25,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:25,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:25,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:25,676 INFO L124 PetriNetUnfolderBase]: 206/454 cut-off events. [2024-11-13 12:49:25,677 INFO L125 PetriNetUnfolderBase]: For 6677/6677 co-relation queries the response was YES. [2024-11-13 12:49:25,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3410 conditions, 454 events. 206/454 cut-off events. For 6677/6677 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2184 event pairs, 7 based on Foata normal form. 6/459 useless extension candidates. Maximal degree in co-relation 3216. Up to 182 conditions per place. [2024-11-13 12:49:25,682 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 88 selfloop transitions, 41 changer transitions 1/133 dead transitions. [2024-11-13 12:49:25,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 133 transitions, 2293 flow [2024-11-13 12:49:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 12:49:25,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 12:49:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-11-13 12:49:25,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-11-13 12:49:25,684 INFO L175 Difference]: Start difference. First operand has 112 places, 118 transitions, 1933 flow. Second operand 10 states and 106 transitions. [2024-11-13 12:49:25,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 133 transitions, 2293 flow [2024-11-13 12:49:25,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 133 transitions, 2163 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-11-13 12:49:25,731 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 1820 flow [2024-11-13 12:49:25,731 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1820, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2024-11-13 12:49:25,732 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 95 predicate places. [2024-11-13 12:49:25,732 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 1820 flow [2024-11-13 12:49:25,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2024-11-13 12:49:25,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:25,733 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:25,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 12:49:25,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 12:49:25,937 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:25,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:25,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1063763702, now seen corresponding path program 9 times [2024-11-13 12:49:25,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:25,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935174572] [2024-11-13 12:49:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:25,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:26,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:26,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935174572] [2024-11-13 12:49:26,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935174572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:26,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661044536] [2024-11-13 12:49:26,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:49:26,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:26,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:26,103 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:26,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 12:49:26,163 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 12:49:26,163 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:26,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 12:49:26,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:26,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661044536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:26,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:26,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 14 [2024-11-13 12:49:26,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683742087] [2024-11-13 12:49:26,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:26,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 12:49:26,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:26,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 12:49:26,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-13 12:49:26,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:26,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 1820 flow. Second operand has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 15 states have internal predecessors, (130), 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) [2024-11-13 12:49:26,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:26,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:26,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:26,737 INFO L124 PetriNetUnfolderBase]: 319/673 cut-off events. [2024-11-13 12:49:26,738 INFO L125 PetriNetUnfolderBase]: For 12358/12358 co-relation queries the response was YES. [2024-11-13 12:49:26,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5120 conditions, 673 events. 319/673 cut-off events. For 12358/12358 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3520 event pairs, 13 based on Foata normal form. 29/701 useless extension candidates. Maximal degree in co-relation 4753. Up to 362 conditions per place. [2024-11-13 12:49:26,746 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 130 selfloop transitions, 55 changer transitions 3/191 dead transitions. [2024-11-13 12:49:26,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 191 transitions, 3216 flow [2024-11-13 12:49:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 12:49:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 12:49:26,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-11-13 12:49:26,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-13 12:49:26,749 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 1820 flow. Second operand 10 states and 128 transitions. [2024-11-13 12:49:26,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 191 transitions, 3216 flow [2024-11-13 12:49:26,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 191 transitions, 3134 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-11-13 12:49:26,799 INFO L231 Difference]: Finished difference. Result has 128 places, 151 transitions, 2618 flow [2024-11-13 12:49:26,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2618, PETRI_PLACES=128, PETRI_TRANSITIONS=151} [2024-11-13 12:49:26,801 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 106 predicate places. [2024-11-13 12:49:26,801 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 151 transitions, 2618 flow [2024-11-13 12:49:26,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 15 states have internal predecessors, (130), 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) [2024-11-13 12:49:26,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:26,802 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:26,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 12:49:27,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 12:49:27,006 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:27,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:27,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1754981604, now seen corresponding path program 10 times [2024-11-13 12:49:27,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:27,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053573745] [2024-11-13 12:49:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:27,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:27,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:27,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053573745] [2024-11-13 12:49:27,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053573745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247080092] [2024-11-13 12:49:27,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:49:27,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:27,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:27,131 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:27,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 12:49:27,187 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:49:27,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:27,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 12:49:27,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:27,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:27,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247080092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:27,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:27,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2024-11-13 12:49:27,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715011112] [2024-11-13 12:49:27,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:27,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 12:49:27,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:27,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 12:49:27,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-13 12:49:27,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:27,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 151 transitions, 2618 flow. Second operand has 17 states, 17 states have (on average 8.294117647058824) internal successors, (141), 17 states have internal predecessors, (141), 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) [2024-11-13 12:49:27,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:27,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:27,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:28,758 INFO L124 PetriNetUnfolderBase]: 547/1120 cut-off events. [2024-11-13 12:49:28,758 INFO L125 PetriNetUnfolderBase]: For 24900/24900 co-relation queries the response was YES. [2024-11-13 12:49:28,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9594 conditions, 1120 events. 547/1120 cut-off events. For 24900/24900 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6566 event pairs, 7 based on Foata normal form. 48/1167 useless extension candidates. Maximal degree in co-relation 9138. Up to 304 conditions per place. [2024-11-13 12:49:28,774 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 155 selfloop transitions, 136 changer transitions 31/325 dead transitions. [2024-11-13 12:49:28,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 325 transitions, 6321 flow [2024-11-13 12:49:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 12:49:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-13 12:49:28,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 261 transitions. [2024-11-13 12:49:28,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5673913043478261 [2024-11-13 12:49:28,817 INFO L175 Difference]: Start difference. First operand has 128 places, 151 transitions, 2618 flow. Second operand 23 states and 261 transitions. [2024-11-13 12:49:28,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 325 transitions, 6321 flow [2024-11-13 12:49:28,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 325 transitions, 6054 flow, removed 127 selfloop flow, removed 2 redundant places. [2024-11-13 12:49:28,922 INFO L231 Difference]: Finished difference. Result has 160 places, 239 transitions, 4829 flow [2024-11-13 12:49:28,923 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4829, PETRI_PLACES=160, PETRI_TRANSITIONS=239} [2024-11-13 12:49:28,923 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 138 predicate places. [2024-11-13 12:49:28,923 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 239 transitions, 4829 flow [2024-11-13 12:49:28,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.294117647058824) internal successors, (141), 17 states have internal predecessors, (141), 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) [2024-11-13 12:49:28,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:28,925 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:28,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:29,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:29,126 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:29,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:29,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1406209874, now seen corresponding path program 11 times [2024-11-13 12:49:29,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:29,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071939551] [2024-11-13 12:49:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:29,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:29,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:29,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071939551] [2024-11-13 12:49:29,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071939551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:29,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960203506] [2024-11-13 12:49:29,263 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 12:49:29,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:29,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:29,265 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:29,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 12:49:29,324 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:49:29,325 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:29,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 12:49:29,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:49:29,391 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:49:29,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960203506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:29,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:49:29,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-13 12:49:29,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615872375] [2024-11-13 12:49:29,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:29,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:49:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:29,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:49:29,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-13 12:49:29,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:29,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 239 transitions, 4829 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-11-13 12:49:29,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:29,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:29,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:29,726 INFO L124 PetriNetUnfolderBase]: 509/1018 cut-off events. [2024-11-13 12:49:29,727 INFO L125 PetriNetUnfolderBase]: For 28830/28833 co-relation queries the response was YES. [2024-11-13 12:49:29,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9625 conditions, 1018 events. 509/1018 cut-off events. For 28830/28833 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5709 event pairs, 27 based on Foata normal form. 9/1025 useless extension candidates. Maximal degree in co-relation 9448. Up to 531 conditions per place. [2024-11-13 12:49:29,741 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 166 selfloop transitions, 21 changer transitions 67/257 dead transitions. [2024-11-13 12:49:29,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 257 transitions, 5618 flow [2024-11-13 12:49:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:49:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 12:49:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-11-13 12:49:29,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-13 12:49:29,743 INFO L175 Difference]: Start difference. First operand has 160 places, 239 transitions, 4829 flow. Second operand 6 states and 64 transitions. [2024-11-13 12:49:29,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 257 transitions, 5618 flow [2024-11-13 12:49:29,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 257 transitions, 4588 flow, removed 475 selfloop flow, removed 4 redundant places. [2024-11-13 12:49:29,918 INFO L231 Difference]: Finished difference. Result has 162 places, 183 transitions, 3084 flow [2024-11-13 12:49:29,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3818, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3084, PETRI_PLACES=162, PETRI_TRANSITIONS=183} [2024-11-13 12:49:29,919 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 140 predicate places. [2024-11-13 12:49:29,919 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 183 transitions, 3084 flow [2024-11-13 12:49:29,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-11-13 12:49:29,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:29,919 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:29,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 12:49:30,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:30,120 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:30,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:30,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1483429760, now seen corresponding path program 12 times [2024-11-13 12:49:30,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:30,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111637072] [2024-11-13 12:49:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:30,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:30,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111637072] [2024-11-13 12:49:30,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111637072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418144527] [2024-11-13 12:49:30,253 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 12:49:30,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:30,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:30,256 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:30,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 12:49:30,315 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 12:49:30,316 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:30,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 12:49:30,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:30,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:30,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418144527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:30,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:30,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-13 12:49:30,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166148188] [2024-11-13 12:49:30,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:30,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 12:49:30,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:30,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 12:49:30,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-11-13 12:49:30,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:30,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 183 transitions, 3084 flow. Second operand has 19 states, 19 states have (on average 8.105263157894736) internal successors, (154), 19 states have internal predecessors, (154), 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) [2024-11-13 12:49:30,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:30,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:30,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:31,519 INFO L124 PetriNetUnfolderBase]: 584/1196 cut-off events. [2024-11-13 12:49:31,520 INFO L125 PetriNetUnfolderBase]: For 53442/53442 co-relation queries the response was YES. [2024-11-13 12:49:31,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11348 conditions, 1196 events. 584/1196 cut-off events. For 53442/53442 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7061 event pairs, 7 based on Foata normal form. 33/1228 useless extension candidates. Maximal degree in co-relation 11283. Up to 292 conditions per place. [2024-11-13 12:49:31,537 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 134 selfloop transitions, 177 changer transitions 26/340 dead transitions. [2024-11-13 12:49:31,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 340 transitions, 6643 flow [2024-11-13 12:49:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 12:49:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 12:49:31,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 306 transitions. [2024-11-13 12:49:31,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2024-11-13 12:49:31,539 INFO L175 Difference]: Start difference. First operand has 162 places, 183 transitions, 3084 flow. Second operand 26 states and 306 transitions. [2024-11-13 12:49:31,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 340 transitions, 6643 flow [2024-11-13 12:49:31,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 340 transitions, 5951 flow, removed 166 selfloop flow, removed 18 redundant places. [2024-11-13 12:49:31,691 INFO L231 Difference]: Finished difference. Result has 168 places, 246 transitions, 4546 flow [2024-11-13 12:49:31,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2698, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4546, PETRI_PLACES=168, PETRI_TRANSITIONS=246} [2024-11-13 12:49:31,692 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 146 predicate places. [2024-11-13 12:49:31,692 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 246 transitions, 4546 flow [2024-11-13 12:49:31,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.105263157894736) internal successors, (154), 19 states have internal predecessors, (154), 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) [2024-11-13 12:49:31,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:31,693 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:31,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:31,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 12:49:31,894 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:31,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:31,894 INFO L85 PathProgramCache]: Analyzing trace with hash -463691641, now seen corresponding path program 13 times [2024-11-13 12:49:31,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060315264] [2024-11-13 12:49:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:31,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:32,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:32,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060315264] [2024-11-13 12:49:32,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060315264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:32,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745770996] [2024-11-13 12:49:32,008 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 12:49:32,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:32,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:32,010 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:32,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 12:49:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:32,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 12:49:32,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:32,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:32,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745770996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:32,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:32,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-13 12:49:32,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576095969] [2024-11-13 12:49:32,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:32,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 12:49:32,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:32,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 12:49:32,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2024-11-13 12:49:32,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:32,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 246 transitions, 4546 flow. Second operand has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 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) [2024-11-13 12:49:32,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:32,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:32,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:32,767 INFO L124 PetriNetUnfolderBase]: 556/1177 cut-off events. [2024-11-13 12:49:32,767 INFO L125 PetriNetUnfolderBase]: For 53560/53560 co-relation queries the response was YES. [2024-11-13 12:49:32,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11321 conditions, 1177 events. 556/1177 cut-off events. For 53560/53560 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7127 event pairs, 11 based on Foata normal form. 36/1212 useless extension candidates. Maximal degree in co-relation 11256. Up to 291 conditions per place. [2024-11-13 12:49:32,783 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 129 selfloop transitions, 132 changer transitions 46/310 dead transitions. [2024-11-13 12:49:32,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 310 transitions, 6358 flow [2024-11-13 12:49:32,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 12:49:32,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 12:49:32,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-11-13 12:49:32,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-11-13 12:49:32,785 INFO L175 Difference]: Start difference. First operand has 168 places, 246 transitions, 4546 flow. Second operand 12 states and 138 transitions. [2024-11-13 12:49:32,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 310 transitions, 6358 flow [2024-11-13 12:49:33,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 310 transitions, 5679 flow, removed 297 selfloop flow, removed 7 redundant places. [2024-11-13 12:49:33,039 INFO L231 Difference]: Finished difference. Result has 175 places, 230 transitions, 4582 flow [2024-11-13 12:49:33,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3838, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4582, PETRI_PLACES=175, PETRI_TRANSITIONS=230} [2024-11-13 12:49:33,040 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 153 predicate places. [2024-11-13 12:49:33,040 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 230 transitions, 4582 flow [2024-11-13 12:49:33,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 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) [2024-11-13 12:49:33,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:33,040 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:33,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:33,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 12:49:33,241 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:33,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash -930638857, now seen corresponding path program 14 times [2024-11-13 12:49:33,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:33,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316022743] [2024-11-13 12:49:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:33,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:33,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:33,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316022743] [2024-11-13 12:49:33,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316022743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:33,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846186009] [2024-11-13 12:49:33,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:49:33,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:33,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:33,349 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:33,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 12:49:33,413 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:49:33,414 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:33,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 12:49:33,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:33,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:33,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:33,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846186009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:33,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:33,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-13 12:49:33,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735643533] [2024-11-13 12:49:33,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:33,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 12:49:33,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:33,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 12:49:33,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-11-13 12:49:33,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:33,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 230 transitions, 4582 flow. Second operand has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 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) [2024-11-13 12:49:33,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:33,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:33,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:34,169 INFO L124 PetriNetUnfolderBase]: 466/968 cut-off events. [2024-11-13 12:49:34,170 INFO L125 PetriNetUnfolderBase]: For 45890/45890 co-relation queries the response was YES. [2024-11-13 12:49:34,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9600 conditions, 968 events. 466/968 cut-off events. For 45890/45890 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5422 event pairs, 15 based on Foata normal form. 4/971 useless extension candidates. Maximal degree in co-relation 9533. Up to 270 conditions per place. [2024-11-13 12:49:34,191 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 125 selfloop transitions, 146 changer transitions 3/277 dead transitions. [2024-11-13 12:49:34,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 277 transitions, 5654 flow [2024-11-13 12:49:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 12:49:34,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 12:49:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 164 transitions. [2024-11-13 12:49:34,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-11-13 12:49:34,194 INFO L175 Difference]: Start difference. First operand has 175 places, 230 transitions, 4582 flow. Second operand 15 states and 164 transitions. [2024-11-13 12:49:34,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 277 transitions, 5654 flow [2024-11-13 12:49:34,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 277 transitions, 5083 flow, removed 266 selfloop flow, removed 6 redundant places. [2024-11-13 12:49:34,482 INFO L231 Difference]: Finished difference. Result has 183 places, 237 transitions, 4598 flow [2024-11-13 12:49:34,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4059, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4598, PETRI_PLACES=183, PETRI_TRANSITIONS=237} [2024-11-13 12:49:34,483 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 161 predicate places. [2024-11-13 12:49:34,483 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 237 transitions, 4598 flow [2024-11-13 12:49:34,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 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) [2024-11-13 12:49:34,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:34,484 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:34,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:34,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:34,685 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:34,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:34,685 INFO L85 PathProgramCache]: Analyzing trace with hash 89559672, now seen corresponding path program 15 times [2024-11-13 12:49:34,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:34,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455366829] [2024-11-13 12:49:34,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:34,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:34,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:34,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455366829] [2024-11-13 12:49:34,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455366829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:34,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391808108] [2024-11-13 12:49:34,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:49:34,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:34,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:34,770 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:34,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 12:49:34,836 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 12:49:34,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:34,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 12:49:34,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:49:34,903 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:49:34,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391808108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:34,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:49:34,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-11-13 12:49:34,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799066139] [2024-11-13 12:49:34,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:34,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:49:34,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:34,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:49:34,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-13 12:49:34,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:34,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 237 transitions, 4598 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-11-13 12:49:34,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:34,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:34,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:35,250 INFO L124 PetriNetUnfolderBase]: 537/1173 cut-off events. [2024-11-13 12:49:35,251 INFO L125 PetriNetUnfolderBase]: For 19473/19473 co-relation queries the response was YES. [2024-11-13 12:49:35,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9821 conditions, 1173 events. 537/1173 cut-off events. For 19473/19473 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7321 event pairs, 24 based on Foata normal form. 23/1195 useless extension candidates. Maximal degree in co-relation 9756. Up to 613 conditions per place. [2024-11-13 12:49:35,262 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 203 selfloop transitions, 26 changer transitions 64/296 dead transitions. [2024-11-13 12:49:35,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 296 transitions, 6075 flow [2024-11-13 12:49:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:49:35,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 12:49:35,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-11-13 12:49:35,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-11-13 12:49:35,264 INFO L175 Difference]: Start difference. First operand has 183 places, 237 transitions, 4598 flow. Second operand 6 states and 71 transitions. [2024-11-13 12:49:35,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 296 transitions, 6075 flow [2024-11-13 12:49:35,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 296 transitions, 5871 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-11-13 12:49:35,399 INFO L231 Difference]: Finished difference. Result has 186 places, 209 transitions, 4118 flow [2024-11-13 12:49:35,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4416, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4118, PETRI_PLACES=186, PETRI_TRANSITIONS=209} [2024-11-13 12:49:35,400 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 164 predicate places. [2024-11-13 12:49:35,400 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 209 transitions, 4118 flow [2024-11-13 12:49:35,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-11-13 12:49:35,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:35,401 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:35,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 12:49:35,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:35,601 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:35,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1226029514, now seen corresponding path program 16 times [2024-11-13 12:49:35,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:35,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352027513] [2024-11-13 12:49:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:35,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:35,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352027513] [2024-11-13 12:49:35,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352027513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:35,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669606725] [2024-11-13 12:49:35,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:49:35,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:35,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:35,680 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:35,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 12:49:35,740 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:49:35,740 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:35,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 12:49:35,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:35,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:35,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669606725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:35,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:35,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-13 12:49:35,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976246727] [2024-11-13 12:49:35,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:35,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 12:49:35,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 12:49:35,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-13 12:49:35,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:35,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 209 transitions, 4118 flow. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2024-11-13 12:49:35,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:35,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:35,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:36,519 INFO L124 PetriNetUnfolderBase]: 453/956 cut-off events. [2024-11-13 12:49:36,520 INFO L125 PetriNetUnfolderBase]: For 19572/19572 co-relation queries the response was YES. [2024-11-13 12:49:36,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8719 conditions, 956 events. 453/956 cut-off events. For 19572/19572 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5357 event pairs, 0 based on Foata normal form. 15/970 useless extension candidates. Maximal degree in co-relation 8650. Up to 401 conditions per place. [2024-11-13 12:49:36,532 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 141 selfloop transitions, 137 changer transitions 8/289 dead transitions. [2024-11-13 12:49:36,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 289 transitions, 5949 flow [2024-11-13 12:49:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 12:49:36,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 12:49:36,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 175 transitions. [2024-11-13 12:49:36,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-11-13 12:49:36,534 INFO L175 Difference]: Start difference. First operand has 186 places, 209 transitions, 4118 flow. Second operand 16 states and 175 transitions. [2024-11-13 12:49:36,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 289 transitions, 5949 flow [2024-11-13 12:49:36,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 289 transitions, 5770 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-11-13 12:49:36,660 INFO L231 Difference]: Finished difference. Result has 197 places, 244 transitions, 5383 flow [2024-11-13 12:49:36,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3941, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5383, PETRI_PLACES=197, PETRI_TRANSITIONS=244} [2024-11-13 12:49:36,661 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 175 predicate places. [2024-11-13 12:49:36,661 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 244 transitions, 5383 flow [2024-11-13 12:49:36,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2024-11-13 12:49:36,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:36,662 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:36,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 12:49:36,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:36,862 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:36,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:36,863 INFO L85 PathProgramCache]: Analyzing trace with hash -743447281, now seen corresponding path program 17 times [2024-11-13 12:49:36,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:36,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782252630] [2024-11-13 12:49:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:36,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:37,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:37,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782252630] [2024-11-13 12:49:37,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782252630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:37,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107698226] [2024-11-13 12:49:37,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 12:49:37,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:37,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:37,009 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:37,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 12:49:37,073 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 12:49:37,073 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:37,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 12:49:37,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 12:49:37,140 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:49:37,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107698226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:37,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:49:37,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-11-13 12:49:37,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051106565] [2024-11-13 12:49:37,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:37,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:49:37,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:49:37,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-13 12:49:37,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:37,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 244 transitions, 5383 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-11-13 12:49:37,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:37,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:37,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:37,454 INFO L124 PetriNetUnfolderBase]: 443/906 cut-off events. [2024-11-13 12:49:37,454 INFO L125 PetriNetUnfolderBase]: For 18788/18788 co-relation queries the response was YES. [2024-11-13 12:49:37,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8823 conditions, 906 events. 443/906 cut-off events. For 18788/18788 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4867 event pairs, 3 based on Foata normal form. 8/913 useless extension candidates. Maximal degree in co-relation 8752. Up to 640 conditions per place. [2024-11-13 12:49:37,463 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 213 selfloop transitions, 13 changer transitions 32/261 dead transitions. [2024-11-13 12:49:37,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 261 transitions, 6102 flow [2024-11-13 12:49:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:49:37,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 12:49:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-11-13 12:49:37,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-13 12:49:37,464 INFO L175 Difference]: Start difference. First operand has 197 places, 244 transitions, 5383 flow. Second operand 6 states and 66 transitions. [2024-11-13 12:49:37,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 261 transitions, 6102 flow [2024-11-13 12:49:37,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 261 transitions, 5693 flow, removed 182 selfloop flow, removed 7 redundant places. [2024-11-13 12:49:37,615 INFO L231 Difference]: Finished difference. Result has 197 places, 222 transitions, 4641 flow [2024-11-13 12:49:37,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4998, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4641, PETRI_PLACES=197, PETRI_TRANSITIONS=222} [2024-11-13 12:49:37,616 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 175 predicate places. [2024-11-13 12:49:37,616 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 222 transitions, 4641 flow [2024-11-13 12:49:37,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-11-13 12:49:37,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:37,616 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:37,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 12:49:37,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:37,819 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:37,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:37,819 INFO L85 PathProgramCache]: Analyzing trace with hash -98591795, now seen corresponding path program 18 times [2024-11-13 12:49:37,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:37,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487403076] [2024-11-13 12:49:37,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:37,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:37,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:37,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487403076] [2024-11-13 12:49:37,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487403076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:37,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296910073] [2024-11-13 12:49:37,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 12:49:37,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:37,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:37,979 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:37,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 12:49:38,053 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 12:49:38,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:38,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 12:49:38,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:38,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:49:38,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296910073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:38,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:38,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5] total 19 [2024-11-13 12:49:38,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434681494] [2024-11-13 12:49:38,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:38,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 12:49:38,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 12:49:38,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-13 12:49:38,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:38,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 222 transitions, 4641 flow. Second operand has 20 states, 20 states have (on average 8.2) internal successors, (164), 20 states have internal predecessors, (164), 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) [2024-11-13 12:49:38,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:38,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:38,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:38,773 INFO L124 PetriNetUnfolderBase]: 455/907 cut-off events. [2024-11-13 12:49:38,773 INFO L125 PetriNetUnfolderBase]: For 20642/20642 co-relation queries the response was YES. [2024-11-13 12:49:38,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8810 conditions, 907 events. 455/907 cut-off events. For 20642/20642 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4734 event pairs, 6 based on Foata normal form. 13/919 useless extension candidates. Maximal degree in co-relation 8739. Up to 630 conditions per place. [2024-11-13 12:49:38,782 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 196 selfloop transitions, 77 changer transitions 19/295 dead transitions. [2024-11-13 12:49:38,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 295 transitions, 6542 flow [2024-11-13 12:49:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 12:49:38,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 12:49:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-11-13 12:49:38,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6038461538461538 [2024-11-13 12:49:38,784 INFO L175 Difference]: Start difference. First operand has 197 places, 222 transitions, 4641 flow. Second operand 13 states and 157 transitions. [2024-11-13 12:49:38,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 295 transitions, 6542 flow [2024-11-13 12:49:38,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 295 transitions, 6177 flow, removed 96 selfloop flow, removed 12 redundant places. [2024-11-13 12:49:38,922 INFO L231 Difference]: Finished difference. Result has 193 places, 257 transitions, 5445 flow [2024-11-13 12:49:38,923 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4374, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5445, PETRI_PLACES=193, PETRI_TRANSITIONS=257} [2024-11-13 12:49:38,923 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 171 predicate places. [2024-11-13 12:49:38,923 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 257 transitions, 5445 flow [2024-11-13 12:49:38,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.2) internal successors, (164), 20 states have internal predecessors, (164), 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) [2024-11-13 12:49:38,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:38,924 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:38,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:39,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 12:49:39,125 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:39,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:39,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1624520841, now seen corresponding path program 19 times [2024-11-13 12:49:39,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:39,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301568496] [2024-11-13 12:49:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:39,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:39,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:39,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301568496] [2024-11-13 12:49:39,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301568496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:39,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618543829] [2024-11-13 12:49:39,249 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 12:49:39,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:39,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:39,251 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:39,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 12:49:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:39,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 12:49:39,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:39,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:39,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618543829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:39,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:39,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 21 [2024-11-13 12:49:39,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342388948] [2024-11-13 12:49:39,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:39,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 12:49:39,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:39,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 12:49:39,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-11-13 12:49:39,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:39,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 257 transitions, 5445 flow. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 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) [2024-11-13 12:49:39,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:39,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:39,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:41,097 INFO L124 PetriNetUnfolderBase]: 631/1277 cut-off events. [2024-11-13 12:49:41,098 INFO L125 PetriNetUnfolderBase]: For 27984/27984 co-relation queries the response was YES. [2024-11-13 12:49:41,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12876 conditions, 1277 events. 631/1277 cut-off events. For 27984/27984 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7351 event pairs, 2 based on Foata normal form. 15/1291 useless extension candidates. Maximal degree in co-relation 12806. Up to 502 conditions per place. [2024-11-13 12:49:41,107 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 206 selfloop transitions, 166 changer transitions 40/415 dead transitions. [2024-11-13 12:49:41,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 415 transitions, 9770 flow [2024-11-13 12:49:41,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 12:49:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-13 12:49:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 240 transitions. [2024-11-13 12:49:41,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-13 12:49:41,109 INFO L175 Difference]: Start difference. First operand has 193 places, 257 transitions, 5445 flow. Second operand 22 states and 240 transitions. [2024-11-13 12:49:41,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 415 transitions, 9770 flow [2024-11-13 12:49:41,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 415 transitions, 9508 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-11-13 12:49:41,245 INFO L231 Difference]: Finished difference. Result has 226 places, 337 transitions, 8045 flow [2024-11-13 12:49:41,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5191, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8045, PETRI_PLACES=226, PETRI_TRANSITIONS=337} [2024-11-13 12:49:41,246 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 204 predicate places. [2024-11-13 12:49:41,246 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 337 transitions, 8045 flow [2024-11-13 12:49:41,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 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) [2024-11-13 12:49:41,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:41,246 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:41,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 12:49:41,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 12:49:41,447 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:41,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash 847237001, now seen corresponding path program 20 times [2024-11-13 12:49:41,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:41,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60254792] [2024-11-13 12:49:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:41,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:41,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:41,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60254792] [2024-11-13 12:49:41,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60254792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:41,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834781839] [2024-11-13 12:49:41,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:49:41,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:41,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:41,577 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:41,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 12:49:41,642 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:49:41,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:41,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 12:49:41,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:41,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:42,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:42,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834781839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:42,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:42,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2024-11-13 12:49:42,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139791192] [2024-11-13 12:49:42,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:42,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 12:49:42,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:42,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 12:49:42,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2024-11-13 12:49:42,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:42,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 337 transitions, 8045 flow. Second operand has 24 states, 24 states have (on average 7.875) internal successors, (189), 24 states have internal predecessors, (189), 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) [2024-11-13 12:49:42,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:42,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:42,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:42,846 INFO L124 PetriNetUnfolderBase]: 660/1328 cut-off events. [2024-11-13 12:49:42,846 INFO L125 PetriNetUnfolderBase]: For 33121/33121 co-relation queries the response was YES. [2024-11-13 12:49:42,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14312 conditions, 1328 events. 660/1328 cut-off events. For 33121/33121 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7714 event pairs, 0 based on Foata normal form. 26/1353 useless extension candidates. Maximal degree in co-relation 14226. Up to 580 conditions per place. [2024-11-13 12:49:42,856 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 240 selfloop transitions, 152 changer transitions 27/422 dead transitions. [2024-11-13 12:49:42,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 422 transitions, 10728 flow [2024-11-13 12:49:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 12:49:42,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-13 12:49:42,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 186 transitions. [2024-11-13 12:49:42,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-11-13 12:49:42,858 INFO L175 Difference]: Start difference. First operand has 226 places, 337 transitions, 8045 flow. Second operand 18 states and 186 transitions. [2024-11-13 12:49:42,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 422 transitions, 10728 flow [2024-11-13 12:49:43,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 422 transitions, 9525 flow, removed 592 selfloop flow, removed 5 redundant places. [2024-11-13 12:49:43,099 INFO L231 Difference]: Finished difference. Result has 246 places, 370 transitions, 8420 flow [2024-11-13 12:49:43,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6922, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8420, PETRI_PLACES=246, PETRI_TRANSITIONS=370} [2024-11-13 12:49:43,099 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 224 predicate places. [2024-11-13 12:49:43,099 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 370 transitions, 8420 flow [2024-11-13 12:49:43,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.875) internal successors, (189), 24 states have internal predecessors, (189), 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) [2024-11-13 12:49:43,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:43,100 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:43,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 12:49:43,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 12:49:43,300 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:43,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:43,301 INFO L85 PathProgramCache]: Analyzing trace with hash -866834403, now seen corresponding path program 21 times [2024-11-13 12:49:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:43,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92645977] [2024-11-13 12:49:43,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:43,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:43,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:43,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92645977] [2024-11-13 12:49:43,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92645977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:43,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704506941] [2024-11-13 12:49:43,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:49:43,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:43,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:43,443 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:43,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 12:49:43,499 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 12:49:43,499 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:43,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 12:49:43,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 12:49:43,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:49:43,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704506941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:43,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:49:43,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-11-13 12:49:43,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395431697] [2024-11-13 12:49:43,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:43,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:49:43,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:43,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:49:43,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-11-13 12:49:43,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:43,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 370 transitions, 8420 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-11-13 12:49:43,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:43,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:43,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:43,907 INFO L124 PetriNetUnfolderBase]: 665/1310 cut-off events. [2024-11-13 12:49:43,907 INFO L125 PetriNetUnfolderBase]: For 30027/30030 co-relation queries the response was YES. [2024-11-13 12:49:43,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13563 conditions, 1310 events. 665/1310 cut-off events. For 30027/30030 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7394 event pairs, 12 based on Foata normal form. 2/1310 useless extension candidates. Maximal degree in co-relation 13468. Up to 971 conditions per place. [2024-11-13 12:49:43,920 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 365 selfloop transitions, 35 changer transitions 7/410 dead transitions. [2024-11-13 12:49:43,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 410 transitions, 9916 flow [2024-11-13 12:49:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:49:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 12:49:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-11-13 12:49:43,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-13 12:49:43,923 INFO L175 Difference]: Start difference. First operand has 246 places, 370 transitions, 8420 flow. Second operand 6 states and 65 transitions. [2024-11-13 12:49:43,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 410 transitions, 9916 flow [2024-11-13 12:49:44,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 410 transitions, 9162 flow, removed 298 selfloop flow, removed 16 redundant places. [2024-11-13 12:49:44,144 INFO L231 Difference]: Finished difference. Result has 232 places, 380 transitions, 8069 flow [2024-11-13 12:49:44,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7704, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8069, PETRI_PLACES=232, PETRI_TRANSITIONS=380} [2024-11-13 12:49:44,144 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 210 predicate places. [2024-11-13 12:49:44,145 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 380 transitions, 8069 flow [2024-11-13 12:49:44,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-11-13 12:49:44,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:44,145 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:44,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 12:49:44,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 12:49:44,345 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:44,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:44,346 INFO L85 PathProgramCache]: Analyzing trace with hash -875964003, now seen corresponding path program 22 times [2024-11-13 12:49:44,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:44,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997056385] [2024-11-13 12:49:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:44,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:44,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997056385] [2024-11-13 12:49:44,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997056385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:44,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127617034] [2024-11-13 12:49:44,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:49:44,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:44,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:44,494 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:44,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 12:49:44,556 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:49:44,556 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:44,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 12:49:44,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:44,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:45,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127617034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:45,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:45,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-13 12:49:45,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619561432] [2024-11-13 12:49:45,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:45,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 12:49:45,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:45,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 12:49:45,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2024-11-13 12:49:45,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:45,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 380 transitions, 8069 flow. Second operand has 25 states, 25 states have (on average 7.8) internal successors, (195), 25 states have internal predecessors, (195), 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) [2024-11-13 12:49:45,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:45,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:45,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:45,698 INFO L124 PetriNetUnfolderBase]: 739/1432 cut-off events. [2024-11-13 12:49:45,698 INFO L125 PetriNetUnfolderBase]: For 27533/27533 co-relation queries the response was YES. [2024-11-13 12:49:45,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14045 conditions, 1432 events. 739/1432 cut-off events. For 27533/27533 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8115 event pairs, 0 based on Foata normal form. 3/1434 useless extension candidates. Maximal degree in co-relation 13959. Up to 888 conditions per place. [2024-11-13 12:49:45,709 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 330 selfloop transitions, 115 changer transitions 18/466 dead transitions. [2024-11-13 12:49:45,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 466 transitions, 10473 flow [2024-11-13 12:49:45,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 12:49:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-13 12:49:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 199 transitions. [2024-11-13 12:49:45,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4738095238095238 [2024-11-13 12:49:45,711 INFO L175 Difference]: Start difference. First operand has 232 places, 380 transitions, 8069 flow. Second operand 21 states and 199 transitions. [2024-11-13 12:49:45,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 466 transitions, 10473 flow [2024-11-13 12:49:45,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 466 transitions, 10363 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-11-13 12:49:45,901 INFO L231 Difference]: Finished difference. Result has 250 places, 422 transitions, 9143 flow [2024-11-13 12:49:45,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7995, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9143, PETRI_PLACES=250, PETRI_TRANSITIONS=422} [2024-11-13 12:49:45,902 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 228 predicate places. [2024-11-13 12:49:45,902 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 422 transitions, 9143 flow [2024-11-13 12:49:45,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.8) internal successors, (195), 25 states have internal predecessors, (195), 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) [2024-11-13 12:49:45,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:45,902 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:45,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 12:49:46,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 12:49:46,103 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:46,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:46,103 INFO L85 PathProgramCache]: Analyzing trace with hash 429614424, now seen corresponding path program 23 times [2024-11-13 12:49:46,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:46,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328942088] [2024-11-13 12:49:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:46,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:46,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:46,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328942088] [2024-11-13 12:49:46,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328942088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:46,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029597067] [2024-11-13 12:49:46,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 12:49:46,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:46,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:46,186 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:46,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 12:49:46,249 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 12:49:46,250 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:46,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 12:49:46,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:46,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:46,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029597067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:46,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:46,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-13 12:49:46,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619773531] [2024-11-13 12:49:46,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:46,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 12:49:46,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:46,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 12:49:46,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2024-11-13 12:49:46,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:46,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 422 transitions, 9143 flow. Second operand has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 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) [2024-11-13 12:49:46,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:46,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:46,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:47,408 INFO L124 PetriNetUnfolderBase]: 786/1535 cut-off events. [2024-11-13 12:49:47,408 INFO L125 PetriNetUnfolderBase]: For 33402/33402 co-relation queries the response was YES. [2024-11-13 12:49:47,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15848 conditions, 1535 events. 786/1535 cut-off events. For 33402/33402 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8920 event pairs, 0 based on Foata normal form. 8/1542 useless extension candidates. Maximal degree in co-relation 15760. Up to 473 conditions per place. [2024-11-13 12:49:47,424 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 149 selfloop transitions, 344 changer transitions 17/513 dead transitions. [2024-11-13 12:49:47,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 513 transitions, 12022 flow [2024-11-13 12:49:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 12:49:47,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-13 12:49:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 228 transitions. [2024-11-13 12:49:47,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-11-13 12:49:47,426 INFO L175 Difference]: Start difference. First operand has 250 places, 422 transitions, 9143 flow. Second operand 22 states and 228 transitions. [2024-11-13 12:49:47,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 513 transitions, 12022 flow [2024-11-13 12:49:47,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 513 transitions, 11674 flow, removed 171 selfloop flow, removed 6 redundant places. [2024-11-13 12:49:47,650 INFO L231 Difference]: Finished difference. Result has 266 places, 453 transitions, 11173 flow [2024-11-13 12:49:47,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8855, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=11173, PETRI_PLACES=266, PETRI_TRANSITIONS=453} [2024-11-13 12:49:47,651 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 244 predicate places. [2024-11-13 12:49:47,651 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 453 transitions, 11173 flow [2024-11-13 12:49:47,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 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) [2024-11-13 12:49:47,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:47,651 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:47,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 12:49:47,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 12:49:47,856 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:47,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1255150405, now seen corresponding path program 24 times [2024-11-13 12:49:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210386659] [2024-11-13 12:49:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:47,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:49:47,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:47,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210386659] [2024-11-13 12:49:47,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210386659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:47,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097248559] [2024-11-13 12:49:47,933 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 12:49:47,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:47,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:47,935 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:47,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 12:49:47,996 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 12:49:47,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:47,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 12:49:47,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:48,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:48,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097248559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:48,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:48,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-13 12:49:48,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529698026] [2024-11-13 12:49:48,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:48,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 12:49:48,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:48,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 12:49:48,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-11-13 12:49:48,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:48,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 453 transitions, 11173 flow. Second operand has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 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) [2024-11-13 12:49:48,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:48,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:48,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:49,152 INFO L124 PetriNetUnfolderBase]: 1020/1909 cut-off events. [2024-11-13 12:49:49,152 INFO L125 PetriNetUnfolderBase]: For 48361/48361 co-relation queries the response was YES. [2024-11-13 12:49:49,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21752 conditions, 1909 events. 1020/1909 cut-off events. For 48361/48361 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11068 event pairs, 0 based on Foata normal form. 32/1940 useless extension candidates. Maximal degree in co-relation 21663. Up to 661 conditions per place. [2024-11-13 12:49:49,168 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 289 selfloop transitions, 342 changer transitions 19/653 dead transitions. [2024-11-13 12:49:49,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 653 transitions, 17073 flow [2024-11-13 12:49:49,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 12:49:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 12:49:49,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 267 transitions. [2024-11-13 12:49:49,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5134615384615384 [2024-11-13 12:49:49,169 INFO L175 Difference]: Start difference. First operand has 266 places, 453 transitions, 11173 flow. Second operand 26 states and 267 transitions. [2024-11-13 12:49:49,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 653 transitions, 17073 flow [2024-11-13 12:49:49,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 653 transitions, 16433 flow, removed 311 selfloop flow, removed 5 redundant places. [2024-11-13 12:49:49,503 INFO L231 Difference]: Finished difference. Result has 294 places, 583 transitions, 15402 flow [2024-11-13 12:49:49,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=10689, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=15402, PETRI_PLACES=294, PETRI_TRANSITIONS=583} [2024-11-13 12:49:49,504 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 272 predicate places. [2024-11-13 12:49:49,504 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 583 transitions, 15402 flow [2024-11-13 12:49:49,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 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) [2024-11-13 12:49:49,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:49,505 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:49,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:49,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 12:49:49,705 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:49,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:49,706 INFO L85 PathProgramCache]: Analyzing trace with hash 153348451, now seen corresponding path program 25 times [2024-11-13 12:49:49,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:49,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317514977] [2024-11-13 12:49:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:49,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 12:49:49,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:49,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317514977] [2024-11-13 12:49:49,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317514977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:49,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005537286] [2024-11-13 12:49:49,781 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 12:49:49,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:49,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:49,784 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:49,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 12:49:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:49,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 12:49:49,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:49,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:50,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005537286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:50,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:50,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-13 12:49:50,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956999986] [2024-11-13 12:49:50,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:50,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 12:49:50,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:50,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 12:49:50,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2024-11-13 12:49:50,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:50,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 583 transitions, 15402 flow. Second operand has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 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) [2024-11-13 12:49:50,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:50,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:50,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:51,363 INFO L124 PetriNetUnfolderBase]: 1157/2133 cut-off events. [2024-11-13 12:49:51,363 INFO L125 PetriNetUnfolderBase]: For 47656/47656 co-relation queries the response was YES. [2024-11-13 12:49:51,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25205 conditions, 2133 events. 1157/2133 cut-off events. For 47656/47656 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12447 event pairs, 0 based on Foata normal form. 8/2140 useless extension candidates. Maximal degree in co-relation 25104. Up to 689 conditions per place. [2024-11-13 12:49:51,381 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 244 selfloop transitions, 482 changer transitions 11/740 dead transitions. [2024-11-13 12:49:51,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 740 transitions, 20928 flow [2024-11-13 12:49:51,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 12:49:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 12:49:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 251 transitions. [2024-11-13 12:49:51,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.502 [2024-11-13 12:49:51,383 INFO L175 Difference]: Start difference. First operand has 294 places, 583 transitions, 15402 flow. Second operand 25 states and 251 transitions. [2024-11-13 12:49:51,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 740 transitions, 20928 flow [2024-11-13 12:49:51,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 740 transitions, 19367 flow, removed 751 selfloop flow, removed 6 redundant places. [2024-11-13 12:49:51,817 INFO L231 Difference]: Finished difference. Result has 318 places, 687 transitions, 18685 flow [2024-11-13 12:49:51,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14104, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=18685, PETRI_PLACES=318, PETRI_TRANSITIONS=687} [2024-11-13 12:49:51,818 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 296 predicate places. [2024-11-13 12:49:51,818 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 687 transitions, 18685 flow [2024-11-13 12:49:51,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 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) [2024-11-13 12:49:51,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:51,819 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:51,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:52,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:52,019 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:52,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:52,019 INFO L85 PathProgramCache]: Analyzing trace with hash 449901717, now seen corresponding path program 26 times [2024-11-13 12:49:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:52,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737241516] [2024-11-13 12:49:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:52,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:52,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:52,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737241516] [2024-11-13 12:49:52,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737241516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:52,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39863382] [2024-11-13 12:49:52,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:49:52,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:52,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:52,114 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:52,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 12:49:52,177 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:49:52,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:52,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 12:49:52,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:52,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:52,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39863382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:52,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:52,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-11-13 12:49:52,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566296868] [2024-11-13 12:49:52,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:52,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 12:49:52,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:52,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 12:49:52,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-11-13 12:49:52,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:52,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 687 transitions, 18685 flow. Second operand has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 19 states have internal predecessors, (151), 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) [2024-11-13 12:49:52,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:52,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:52,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:53,666 INFO L124 PetriNetUnfolderBase]: 1183/2128 cut-off events. [2024-11-13 12:49:53,666 INFO L125 PetriNetUnfolderBase]: For 42899/42899 co-relation queries the response was YES. [2024-11-13 12:49:53,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25041 conditions, 2128 events. 1183/2128 cut-off events. For 42899/42899 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12039 event pairs, 0 based on Foata normal form. 42/2169 useless extension candidates. Maximal degree in co-relation 24934. Up to 870 conditions per place. [2024-11-13 12:49:53,688 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 314 selfloop transitions, 414 changer transitions 4/735 dead transitions. [2024-11-13 12:49:53,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 735 transitions, 20643 flow [2024-11-13 12:49:53,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 12:49:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-13 12:49:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 171 transitions. [2024-11-13 12:49:53,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5029411764705882 [2024-11-13 12:49:53,689 INFO L175 Difference]: Start difference. First operand has 318 places, 687 transitions, 18685 flow. Second operand 17 states and 171 transitions. [2024-11-13 12:49:53,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 735 transitions, 20643 flow [2024-11-13 12:49:54,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 735 transitions, 19118 flow, removed 540 selfloop flow, removed 21 redundant places. [2024-11-13 12:49:54,169 INFO L231 Difference]: Finished difference. Result has 308 places, 705 transitions, 18394 flow [2024-11-13 12:49:54,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=16595, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=18394, PETRI_PLACES=308, PETRI_TRANSITIONS=705} [2024-11-13 12:49:54,170 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 286 predicate places. [2024-11-13 12:49:54,170 INFO L471 AbstractCegarLoop]: Abstraction has has 308 places, 705 transitions, 18394 flow [2024-11-13 12:49:54,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 19 states have internal predecessors, (151), 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) [2024-11-13 12:49:54,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:54,170 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:54,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 12:49:54,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:54,371 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:54,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:54,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1216389485, now seen corresponding path program 27 times [2024-11-13 12:49:54,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:54,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844881692] [2024-11-13 12:49:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:54,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844881692] [2024-11-13 12:49:54,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844881692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502613545] [2024-11-13 12:49:54,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:49:54,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:54,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:54,454 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:54,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 12:49:54,516 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 12:49:54,516 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:54,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 12:49:54,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 12:49:54,579 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:49:54,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502613545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:54,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:49:54,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-13 12:49:54,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112274789] [2024-11-13 12:49:54,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:54,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:49:54,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:54,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:49:54,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-13 12:49:54,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:54,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 705 transitions, 18394 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-11-13 12:49:54,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:54,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:54,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:55,271 INFO L124 PetriNetUnfolderBase]: 1179/2074 cut-off events. [2024-11-13 12:49:55,271 INFO L125 PetriNetUnfolderBase]: For 29950/29950 co-relation queries the response was YES. [2024-11-13 12:49:55,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23999 conditions, 2074 events. 1179/2074 cut-off events. For 29950/29950 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11548 event pairs, 3 based on Foata normal form. 19/2092 useless extension candidates. Maximal degree in co-relation 23902. Up to 1784 conditions per place. [2024-11-13 12:49:55,286 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 19 selfloop transitions, 1 changer transitions 703/726 dead transitions. [2024-11-13 12:49:55,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 726 transitions, 20187 flow [2024-11-13 12:49:55,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:49:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 12:49:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-11-13 12:49:55,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-13 12:49:55,287 INFO L175 Difference]: Start difference. First operand has 308 places, 705 transitions, 18394 flow. Second operand 6 states and 65 transitions. [2024-11-13 12:49:55,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 726 transitions, 20187 flow [2024-11-13 12:49:55,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 726 transitions, 19159 flow, removed 150 selfloop flow, removed 16 redundant places. [2024-11-13 12:49:55,761 INFO L231 Difference]: Finished difference. Result has 296 places, 22 transitions, 341 flow [2024-11-13 12:49:55,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=17359, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=702, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=296, PETRI_TRANSITIONS=22} [2024-11-13 12:49:55,762 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 274 predicate places. [2024-11-13 12:49:55,762 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 22 transitions, 341 flow [2024-11-13 12:49:55,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-11-13 12:49:55,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:55,763 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:55,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:55,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:55,963 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:55,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:55,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1469921645, now seen corresponding path program 28 times [2024-11-13 12:49:55,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:55,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655649479] [2024-11-13 12:49:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:55,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:56,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:56,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655649479] [2024-11-13 12:49:56,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655649479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:56,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907907563] [2024-11-13 12:49:56,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:49:56,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:56,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:56,039 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:56,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 12:49:56,104 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:49:56,105 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:56,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 12:49:56,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:56,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:56,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907907563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:56,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:56,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-13 12:49:56,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120280569] [2024-11-13 12:49:56,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:56,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 12:49:56,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 12:49:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2024-11-13 12:49:56,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:56,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 22 transitions, 341 flow. Second operand has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 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) [2024-11-13 12:49:56,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:56,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:56,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:56,514 INFO L124 PetriNetUnfolderBase]: 22/67 cut-off events. [2024-11-13 12:49:56,514 INFO L125 PetriNetUnfolderBase]: For 2821/2821 co-relation queries the response was YES. [2024-11-13 12:49:56,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 67 events. 22/67 cut-off events. For 2821/2821 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 2/68 useless extension candidates. Maximal degree in co-relation 632. Up to 23 conditions per place. [2024-11-13 12:49:56,515 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 19 selfloop transitions, 6 changer transitions 11/39 dead transitions. [2024-11-13 12:49:56,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 39 transitions, 605 flow [2024-11-13 12:49:56,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 12:49:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 12:49:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-11-13 12:49:56,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-13 12:49:56,516 INFO L175 Difference]: Start difference. First operand has 296 places, 22 transitions, 341 flow. Second operand 11 states and 99 transitions. [2024-11-13 12:49:56,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 39 transitions, 605 flow [2024-11-13 12:49:56,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 39 transitions, 243 flow, removed 61 selfloop flow, removed 90 redundant places. [2024-11-13 12:49:56,520 INFO L231 Difference]: Finished difference. Result has 95 places, 23 transitions, 133 flow [2024-11-13 12:49:56,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=133, PETRI_PLACES=95, PETRI_TRANSITIONS=23} [2024-11-13 12:49:56,520 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 73 predicate places. [2024-11-13 12:49:56,520 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 23 transitions, 133 flow [2024-11-13 12:49:56,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 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) [2024-11-13 12:49:56,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:49:56,520 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:49:56,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:56,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:56,721 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 12:49:56,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -503138592, now seen corresponding path program 29 times [2024-11-13 12:49:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:56,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317456667] [2024-11-13 12:49:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:56,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:56,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:56,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317456667] [2024-11-13 12:49:56,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317456667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:56,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374237263] [2024-11-13 12:49:56,893 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 12:49:56,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:56,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:56,897 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:56,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 12:49:56,960 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 12:49:56,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:49:56,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 12:49:56,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 12:49:57,027 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:49:57,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374237263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:57,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:49:57,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2024-11-13 12:49:57,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508618616] [2024-11-13 12:49:57,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:57,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:49:57,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:57,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:49:57,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2024-11-13 12:49:57,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-13 12:49:57,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 23 transitions, 133 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-11-13 12:49:57,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:49:57,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-13 12:49:57,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 12:49:57,066 INFO L124 PetriNetUnfolderBase]: 15/47 cut-off events. [2024-11-13 12:49:57,066 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-13 12:49:57,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 47 events. 15/47 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 216. Up to 18 conditions per place. [2024-11-13 12:49:57,067 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2024-11-13 12:49:57,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 27 transitions, 209 flow [2024-11-13 12:49:57,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:49:57,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 12:49:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2024-11-13 12:49:57,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-13 12:49:57,067 INFO L175 Difference]: Start difference. First operand has 95 places, 23 transitions, 133 flow. Second operand 6 states and 56 transitions. [2024-11-13 12:49:57,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 27 transitions, 209 flow [2024-11-13 12:49:57,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 27 transitions, 187 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-13 12:49:57,069 INFO L231 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2024-11-13 12:49:57,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2024-11-13 12:49:57,069 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 64 predicate places. [2024-11-13 12:49:57,069 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2024-11-13 12:49:57,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2024-11-13 12:49:57,071 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-13 12:49:57,072 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-13 12:49:57,072 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-13 12:49:57,072 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-13 12:49:57,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 12:49:57,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:57,273 INFO L407 BasicCegarLoop]: Path program histogram: [29, 2, 2, 1] [2024-11-13 12:49:57,277 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 12:49:57,277 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 12:49:57,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 12:49:57 BasicIcfg [2024-11-13 12:49:57,284 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 12:49:57,285 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 12:49:57,285 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 12:49:57,285 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 12:49:57,286 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:49:16" (3/4) ... [2024-11-13 12:49:57,288 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 12:49:57,292 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-13 12:49:57,293 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-13 12:49:57,297 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2024-11-13 12:49:57,297 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-13 12:49:57,298 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-13 12:49:57,298 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 12:49:57,395 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 12:49:57,395 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 12:49:57,395 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 12:49:57,397 INFO L158 Benchmark]: Toolchain (without parser) took 42187.69ms. Allocated memory was 142.6MB in the beginning and 604.0MB in the end (delta: 461.4MB). Free memory was 119.5MB in the beginning and 263.5MB in the end (delta: -144.1MB). Peak memory consumption was 310.7MB. Max. memory is 16.1GB. [2024-11-13 12:49:57,397 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 12:49:57,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.99ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 108.2MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 12:49:57,398 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.52ms. Allocated memory is still 142.6MB. Free memory was 108.2MB in the beginning and 107.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 12:49:57,400 INFO L158 Benchmark]: Boogie Preprocessor took 50.42ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 105.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 12:49:57,400 INFO L158 Benchmark]: RCFGBuilder took 546.93ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 86.2MB in the end (delta: 19.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 12:49:57,400 INFO L158 Benchmark]: TraceAbstraction took 41124.21ms. Allocated memory was 142.6MB in the beginning and 604.0MB in the end (delta: 461.4MB). Free memory was 85.6MB in the beginning and 267.6MB in the end (delta: -182.0MB). Peak memory consumption was 277.2MB. Max. memory is 16.1GB. [2024-11-13 12:49:57,402 INFO L158 Benchmark]: Witness Printer took 110.79ms. Allocated memory is still 604.0MB. Free memory was 267.6MB in the beginning and 263.5MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 12:49:57,403 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.99ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 108.2MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.52ms. Allocated memory is still 142.6MB. Free memory was 108.2MB in the beginning and 107.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.42ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 105.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 546.93ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 86.2MB in the end (delta: 19.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 41124.21ms. Allocated memory was 142.6MB in the beginning and 604.0MB in the end (delta: 461.4MB). Free memory was 85.6MB in the beginning and 267.6MB in the end (delta: -182.0MB). Peak memory consumption was 277.2MB. Max. memory is 16.1GB. * Witness Printer took 110.79ms. Allocated memory is still 604.0MB. Free memory was 267.6MB in the beginning and 263.5MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 27 locations, 4 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: 41.0s, OverallIterations: 34, TraceHistogramMax: 4, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.0s, AutomataDifference: 21.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1695 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1695 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 475 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5694 IncrementalHoareTripleChecker+Invalid, 6169 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 475 mSolverCounterUnsat, 0 mSDtfsCounter, 5694 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1307 GetRequests, 704 SyntacticMatches, 19 SemanticMatches, 584 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3989 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18685occurred in iteration=30, InterpolantAutomatonStates: 411, 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: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 1125 NumberOfCodeBlocks, 1120 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 1458 ConstructedInterpolants, 0 QuantifiedInterpolants, 7309 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2940 ConjunctsInSsa, 235 ConjunctsInUnsatCore, 88 InterpolantComputations, 11 PerfectInterpolantSequences, 363/759 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 12:49:57,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af353837-cc39-4eb4-b187-44182e6ec5f3/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE