./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 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU --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 0.2.5-dev-4fc63b2 [2024-10-31 22:09:43,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:43,476 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:09:43,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:43,484 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:43,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:43,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:43,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:43,517 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:43,518 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:43,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:09:43,519 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:09:43,520 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:43,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:43,520 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:43,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:43,521 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:09:43,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:09:43,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:09:43,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:43,525 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:09:43,525 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:09:43,526 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:09:43,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:09:43,526 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:09:43,527 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:43,527 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:09:43,527 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:09:43,528 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:43,528 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:43,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:43,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:09:43,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:09:43,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:43,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:43,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:09:43,535 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:09:43,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:09:43,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:09:43,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:09:43,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:09:43,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:09:43,541 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2024-10-31 22:09:43,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:43,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:43,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:43,897 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:43,898 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:43,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/test-easy1.wvr.c Unable to find full path for "g++" [2024-10-31 22:09:46,195 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:46,471 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:46,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/sv-benchmarks/c/weaver/test-easy1.wvr.c [2024-10-31 22:09:46,486 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/data/71e0fe194/8afc0c77db82483a910432c2685d43b0/FLAG3ab3b2cc0 [2024-10-31 22:09:46,510 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/data/71e0fe194/8afc0c77db82483a910432c2685d43b0 [2024-10-31 22:09:46,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:46,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:46,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:46,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:46,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:46,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:46,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@572446a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46, skipping insertion in model container [2024-10-31 22:09:46,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:46,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:46,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:46,883 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:46,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:46,933 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:46,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46 WrapperNode [2024-10-31 22:09:46,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:46,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:46,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:46,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:46,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:46,952 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:46,978 INFO L138 Inliner]: procedures = 20, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2024-10-31 22:09:46,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:46,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:09:46,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:09:46,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:09:46,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:46,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:47,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:47,019 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]. [2024-10-31 22:09:47,019 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:47,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:47,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:47,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:47,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:47,036 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:47,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:09:47,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:09:47,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:09:47,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:09:47,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (1/1) ... [2024-10-31 22:09:47,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:47,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:47,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:47,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:09:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:09:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:09:47,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:09:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:09:47,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:09:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:09:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:09:47,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:09:47,136 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:09:47,265 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:09:47,268 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:09:47,523 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:09:47,523 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:09:47,765 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:09:47,765 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:09:47,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:47 BoogieIcfgContainer [2024-10-31 22:09:47,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:09:47,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:09:47,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:09:47,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:09:47,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:09:46" (1/3) ... [2024-10-31 22:09:47,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1402189a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:47, skipping insertion in model container [2024-10-31 22:09:47,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:46" (2/3) ... [2024-10-31 22:09:47,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1402189a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:47, skipping insertion in model container [2024-10-31 22:09:47,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:47" (3/3) ... [2024-10-31 22:09:47,806 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2024-10-31 22:09:47,829 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:09:47,830 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:09:47,830 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:09:47,882 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:09:47,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-10-31 22:09:47,960 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-31 22:09:47,961 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:09:47,966 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. [2024-10-31 22:09:47,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-10-31 22:09:47,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-10-31 22:09:47,992 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:09:48,002 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;@3dd3834f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:09:48,003 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:09:48,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:09:48,026 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-10-31 22:09:48,027 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:09:48,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:48,028 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:48,029 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)] === [2024-10-31 22:09:48,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:48,042 INFO L85 PathProgramCache]: Analyzing trace with hash 206962796, now seen corresponding path program 1 times [2024-10-31 22:09:48,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:48,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416589552] [2024-10-31 22:09:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:48,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:48,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:48,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416589552] [2024-10-31 22:09:48,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416589552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:48,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:48,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:09:48,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169810427] [2024-10-31 22:09:48,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:48,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:09:48,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:48,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:09:48,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:48,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:48,563 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) [2024-10-31 22:09:48,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:48,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:48,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:48,709 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2024-10-31 22:09:48,709 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-31 22:09:48,710 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 289 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. [2024-10-31 22:09:48,713 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2024-10-31 22:09:48,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2024-10-31 22:09:48,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:09:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:09:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2024-10-31 22:09:48,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-10-31 22:09:48,733 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 41 transitions. [2024-10-31 22:09:48,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2024-10-31 22:09:48,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:09:48,747 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-10-31 22:09:48,750 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} [2024-10-31 22:09:48,757 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2024-10-31 22:09:48,757 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-10-31 22:09:48,758 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) [2024-10-31 22:09:48,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:48,759 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:48,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:09:48,762 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)] === [2024-10-31 22:09:48,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:48,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1915398664, now seen corresponding path program 1 times [2024-10-31 22:09:48,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:48,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416198400] [2024-10-31 22:09:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:48,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:49,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:49,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416198400] [2024-10-31 22:09:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416198400] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:49,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:49,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:09:49,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868716294] [2024-10-31 22:09:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:49,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:09:49,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:09:49,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:09:49,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:49,045 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) [2024-10-31 22:09:49,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:49,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:49,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:49,314 INFO L124 PetriNetUnfolderBase]: 62/118 cut-off events. [2024-10-31 22:09:49,318 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-10-31 22:09:49,319 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. [2024-10-31 22:09:49,321 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 25 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2024-10-31 22:09:49,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 35 transitions, 169 flow [2024-10-31 22:09:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:09:49,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:09:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-10-31 22:09:49,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-31 22:09:49,327 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 60 transitions. [2024-10-31 22:09:49,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 35 transitions, 169 flow [2024-10-31 22:09:49,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 35 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:09:49,331 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2024-10-31 22:09:49,333 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} [2024-10-31 22:09:49,334 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2024-10-31 22:09:49,335 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2024-10-31 22:09:49,336 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) [2024-10-31 22:09:49,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:49,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:49,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:09:49,338 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)] === [2024-10-31 22:09:49,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:49,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1112765758, now seen corresponding path program 2 times [2024-10-31 22:09:49,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:49,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23096143] [2024-10-31 22:09:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:49,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:49,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:49,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:49,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23096143] [2024-10-31 22:09:49,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23096143] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:49,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756681984] [2024-10-31 22:09:49,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:09:49,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:49,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:49,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:49,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:09:49,633 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:09:49,634 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:49,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:09:49,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:49,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:49,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756681984] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:49,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:09:49,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2024-10-31 22:09:49,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178042198] [2024-10-31 22:09:49,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:49,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:09:49,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:49,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:09:49,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:09:49,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:49,902 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) [2024-10-31 22:09:49,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:49,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:49,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:50,041 INFO L124 PetriNetUnfolderBase]: 56/110 cut-off events. [2024-10-31 22:09:50,043 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-10-31 22:09:50,044 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. [2024-10-31 22:09:50,046 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 22 selfloop transitions, 8 changer transitions 2/35 dead transitions. [2024-10-31 22:09:50,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 216 flow [2024-10-31 22:09:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:09:50,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:09:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2024-10-31 22:09:50,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-31 22:09:50,050 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 4 states and 52 transitions. [2024-10-31 22:09:50,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 216 flow [2024-10-31 22:09:50,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:09:50,058 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 127 flow [2024-10-31 22:09:50,058 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} [2024-10-31 22:09:50,059 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2024-10-31 22:09:50,059 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 127 flow [2024-10-31 22:09:50,060 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) [2024-10-31 22:09:50,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:50,061 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:50,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:50,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:50,265 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)] === [2024-10-31 22:09:50,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2119804075, now seen corresponding path program 1 times [2024-10-31 22:09:50,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:50,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048238502] [2024-10-31 22:09:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:50,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:50,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:50,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048238502] [2024-10-31 22:09:50,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048238502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:50,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:50,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:09:50,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477140039] [2024-10-31 22:09:50,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:50,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:09:50,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:50,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:09:50,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:09:50,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:50,402 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) [2024-10-31 22:09:50,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:50,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:50,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:50,527 INFO L124 PetriNetUnfolderBase]: 54/116 cut-off events. [2024-10-31 22:09:50,528 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2024-10-31 22:09:50,529 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. [2024-10-31 22:09:50,530 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 29 selfloop transitions, 7 changer transitions 3/42 dead transitions. [2024-10-31 22:09:50,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 293 flow [2024-10-31 22:09:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:09:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:09:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-10-31 22:09:50,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-10-31 22:09:50,535 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 127 flow. Second operand 5 states and 63 transitions. [2024-10-31 22:09:50,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 293 flow [2024-10-31 22:09:50,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 261 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-31 22:09:50,539 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 161 flow [2024-10-31 22:09:50,540 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} [2024-10-31 22:09:50,541 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 11 predicate places. [2024-10-31 22:09:50,541 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 161 flow [2024-10-31 22:09:50,541 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) [2024-10-31 22:09:50,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:50,541 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:50,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:09:50,542 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)] === [2024-10-31 22:09:50,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:50,543 INFO L85 PathProgramCache]: Analyzing trace with hash -76544487, now seen corresponding path program 2 times [2024-10-31 22:09:50,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:50,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74819921] [2024-10-31 22:09:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:50,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:50,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:50,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74819921] [2024-10-31 22:09:50,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74819921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:50,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:50,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:09:50,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125485420] [2024-10-31 22:09:50,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:50,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:09:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:50,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:09:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:09:50,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:50,631 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) [2024-10-31 22:09:50,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:50,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:50,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:50,748 INFO L124 PetriNetUnfolderBase]: 43/93 cut-off events. [2024-10-31 22:09:50,748 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-10-31 22:09:50,749 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. [2024-10-31 22:09:50,750 INFO L140 encePairwiseOnDemand]: 16/20 looper letters, 22 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2024-10-31 22:09:50,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 225 flow [2024-10-31 22:09:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:09:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:09:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2024-10-31 22:09:50,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-10-31 22:09:50,752 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 161 flow. Second operand 4 states and 46 transitions. [2024-10-31 22:09:50,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 225 flow [2024-10-31 22:09:50,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 219 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-31 22:09:50,756 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 163 flow [2024-10-31 22:09:50,757 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} [2024-10-31 22:09:50,757 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 14 predicate places. [2024-10-31 22:09:50,758 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 163 flow [2024-10-31 22:09:50,758 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) [2024-10-31 22:09:50,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:50,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:50,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:09:50,759 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)] === [2024-10-31 22:09:50,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:50,760 INFO L85 PathProgramCache]: Analyzing trace with hash 819771023, now seen corresponding path program 1 times [2024-10-31 22:09:50,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:50,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200136757] [2024-10-31 22:09:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:50,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:50,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:50,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200136757] [2024-10-31 22:09:50,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200136757] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:50,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381970707] [2024-10-31 22:09:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:50,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:50,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:50,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:50,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:09:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:51,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:09:51,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:51,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:51,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381970707] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:51,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:51,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-31 22:09:51,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36207659] [2024-10-31 22:09:51,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:51,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:09:51,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:51,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:09:51,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:09:51,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:51,463 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) [2024-10-31 22:09:51,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:51,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:51,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:51,691 INFO L124 PetriNetUnfolderBase]: 98/193 cut-off events. [2024-10-31 22:09:51,691 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-10-31 22:09:51,693 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. [2024-10-31 22:09:51,695 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 19 changer transitions 8/68 dead transitions. [2024-10-31 22:09:51,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 549 flow [2024-10-31 22:09:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:09:51,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:09:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-10-31 22:09:51,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-10-31 22:09:51,697 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 163 flow. Second operand 9 states and 111 transitions. [2024-10-31 22:09:51,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 549 flow [2024-10-31 22:09:51,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 530 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-31 22:09:51,703 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 364 flow [2024-10-31 22:09:51,703 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} [2024-10-31 22:09:51,704 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 26 predicate places. [2024-10-31 22:09:51,704 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 364 flow [2024-10-31 22:09:51,705 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) [2024-10-31 22:09:51,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:51,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:51,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:51,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:09:51,906 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)] === [2024-10-31 22:09:51,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1922603833, now seen corresponding path program 2 times [2024-10-31 22:09:51,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:51,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383162490] [2024-10-31 22:09:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:51,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:52,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383162490] [2024-10-31 22:09:52,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383162490] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:52,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249602946] [2024-10-31 22:09:52,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:09:52,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:52,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:52,044 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:52,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:09:52,109 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:09:52,110 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:52,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:09:52,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:52,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:52,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249602946] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:52,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:52,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2024-10-31 22:09:52,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562813034] [2024-10-31 22:09:52,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:52,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:09:52,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:09:52,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:09:52,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:52,279 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) [2024-10-31 22:09:52,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:52,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:52,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:52,467 INFO L124 PetriNetUnfolderBase]: 128/257 cut-off events. [2024-10-31 22:09:52,468 INFO L125 PetriNetUnfolderBase]: For 1182/1182 co-relation queries the response was YES. [2024-10-31 22:09:52,471 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. [2024-10-31 22:09:52,473 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 50 selfloop transitions, 17 changer transitions 1/71 dead transitions. [2024-10-31 22:09:52,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 741 flow [2024-10-31 22:09:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:09:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:09:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-10-31 22:09:52,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-10-31 22:09:52,478 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 364 flow. Second operand 6 states and 77 transitions. [2024-10-31 22:09:52,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 741 flow [2024-10-31 22:09:52,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 71 transitions, 664 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-10-31 22:09:52,489 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 484 flow [2024-10-31 22:09:52,489 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} [2024-10-31 22:09:52,490 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2024-10-31 22:09:52,491 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 484 flow [2024-10-31 22:09:52,491 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) [2024-10-31 22:09:52,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:52,491 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:52,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:52,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:09:52,696 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)] === [2024-10-31 22:09:52,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash -357977368, now seen corresponding path program 3 times [2024-10-31 22:09:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:52,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141890088] [2024-10-31 22:09:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:52,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:52,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141890088] [2024-10-31 22:09:52,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141890088] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:52,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617536104] [2024-10-31 22:09:52,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:09:52,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:52,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:52,789 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:52,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:09:52,862 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-31 22:09:52,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:52,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:09:52,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:52,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:53,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617536104] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:53,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:53,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-31 22:09:53,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477283482] [2024-10-31 22:09:53,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:53,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:09:53,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:09:53,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:09:53,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:53,044 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) [2024-10-31 22:09:53,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:53,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:53,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:53,246 INFO L124 PetriNetUnfolderBase]: 145/307 cut-off events. [2024-10-31 22:09:53,247 INFO L125 PetriNetUnfolderBase]: For 2165/2165 co-relation queries the response was YES. [2024-10-31 22:09:53,249 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. [2024-10-31 22:09:53,251 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 54 selfloop transitions, 28 changer transitions 8/93 dead transitions. [2024-10-31 22:09:53,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 93 transitions, 1012 flow [2024-10-31 22:09:53,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:09:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:09:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-10-31 22:09:53,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-10-31 22:09:53,253 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 484 flow. Second operand 9 states and 107 transitions. [2024-10-31 22:09:53,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 93 transitions, 1012 flow [2024-10-31 22:09:53,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 93 transitions, 991 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-31 22:09:53,264 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 737 flow [2024-10-31 22:09:53,264 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} [2024-10-31 22:09:53,265 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 42 predicate places. [2024-10-31 22:09:53,265 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 737 flow [2024-10-31 22:09:53,265 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) [2024-10-31 22:09:53,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:53,266 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:53,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:09:53,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 22:09:53,470 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)] === [2024-10-31 22:09:53,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:53,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1574603168, now seen corresponding path program 4 times [2024-10-31 22:09:53,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:53,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355042886] [2024-10-31 22:09:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:53,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:53,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:53,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355042886] [2024-10-31 22:09:53,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355042886] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:53,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735463205] [2024-10-31 22:09:53,538 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:09:53,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:53,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:53,540 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:53,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:09:53,600 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:09:53,601 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:53,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:09:53,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:53,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:53,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735463205] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:53,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:53,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-10-31 22:09:53,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299336951] [2024-10-31 22:09:53,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:53,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:09:53,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:53,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:09:53,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:09:53,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:53,780 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) [2024-10-31 22:09:53,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:53,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:53,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:54,065 INFO L124 PetriNetUnfolderBase]: 141/305 cut-off events. [2024-10-31 22:09:54,066 INFO L125 PetriNetUnfolderBase]: For 2766/2766 co-relation queries the response was YES. [2024-10-31 22:09:54,068 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. [2024-10-31 22:09:54,071 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 59 selfloop transitions, 40 changer transitions 0/102 dead transitions. [2024-10-31 22:09:54,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 102 transitions, 1245 flow [2024-10-31 22:09:54,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:09:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:09:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-10-31 22:09:54,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-10-31 22:09:54,073 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 737 flow. Second operand 11 states and 128 transitions. [2024-10-31 22:09:54,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 102 transitions, 1245 flow [2024-10-31 22:09:54,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 1142 flow, removed 50 selfloop flow, removed 1 redundant places. [2024-10-31 22:09:54,091 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 924 flow [2024-10-31 22:09:54,092 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} [2024-10-31 22:09:54,093 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 55 predicate places. [2024-10-31 22:09:54,095 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 924 flow [2024-10-31 22:09:54,095 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) [2024-10-31 22:09:54,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:54,095 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:54,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:09:54,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-31 22:09:54,298 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)] === [2024-10-31 22:09:54,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:54,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1466798584, now seen corresponding path program 5 times [2024-10-31 22:09:54,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:54,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135179323] [2024-10-31 22:09:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:54,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:54,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:54,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135179323] [2024-10-31 22:09:54,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135179323] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:54,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869548056] [2024-10-31 22:09:54,417 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 22:09:54,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:54,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:54,420 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:54,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:09:54,477 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:09:54,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:54,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:09:54,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:54,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:54,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869548056] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:54,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:54,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-31 22:09:54,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166942249] [2024-10-31 22:09:54,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:54,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:09:54,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:54,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:09:54,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:09:54,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:54,653 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) [2024-10-31 22:09:54,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:54,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:54,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:54,931 INFO L124 PetriNetUnfolderBase]: 179/395 cut-off events. [2024-10-31 22:09:54,932 INFO L125 PetriNetUnfolderBase]: For 3668/3668 co-relation queries the response was YES. [2024-10-31 22:09:54,935 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. [2024-10-31 22:09:54,939 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 67 selfloop transitions, 48 changer transitions 0/118 dead transitions. [2024-10-31 22:09:54,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 118 transitions, 1702 flow [2024-10-31 22:09:54,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:09:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:09:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-10-31 22:09:54,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5541666666666667 [2024-10-31 22:09:54,941 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 924 flow. Second operand 12 states and 133 transitions. [2024-10-31 22:09:54,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 118 transitions, 1702 flow [2024-10-31 22:09:54,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 118 transitions, 1543 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-10-31 22:09:54,959 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 1354 flow [2024-10-31 22:09:54,960 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} [2024-10-31 22:09:54,960 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 68 predicate places. [2024-10-31 22:09:54,960 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 1354 flow [2024-10-31 22:09:54,961 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) [2024-10-31 22:09:54,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:54,961 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:54,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:09:55,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:09:55,162 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)] === [2024-10-31 22:09:55,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash 994185525, now seen corresponding path program 6 times [2024-10-31 22:09:55,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:55,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962756276] [2024-10-31 22:09:55,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:55,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:55,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:55,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962756276] [2024-10-31 22:09:55,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962756276] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:55,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103176191] [2024-10-31 22:09:55,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-31 22:09:55,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:55,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:55,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:55,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:09:55,314 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-31 22:09:55,315 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:55,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:09:55,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:55,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:55,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103176191] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:55,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:55,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-31 22:09:55,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955581415] [2024-10-31 22:09:55,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:55,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:09:55,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:55,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:09:55,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:09:55,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:55,466 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) [2024-10-31 22:09:55,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:55,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:55,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:55,813 INFO L124 PetriNetUnfolderBase]: 201/451 cut-off events. [2024-10-31 22:09:55,813 INFO L125 PetriNetUnfolderBase]: For 5106/5106 co-relation queries the response was YES. [2024-10-31 22:09:55,815 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. [2024-10-31 22:09:55,819 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 83 selfloop transitions, 42 changer transitions 7/135 dead transitions. [2024-10-31 22:09:55,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 135 transitions, 2123 flow [2024-10-31 22:09:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:09:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:09:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-10-31 22:09:55,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5722222222222222 [2024-10-31 22:09:55,820 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 1354 flow. Second operand 9 states and 103 transitions. [2024-10-31 22:09:55,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 135 transitions, 2123 flow [2024-10-31 22:09:55,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 135 transitions, 1969 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-10-31 22:09:55,847 INFO L231 Difference]: Finished difference. Result has 99 places, 105 transitions, 1636 flow [2024-10-31 22:09:55,847 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} [2024-10-31 22:09:55,848 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 77 predicate places. [2024-10-31 22:09:55,848 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 105 transitions, 1636 flow [2024-10-31 22:09:55,848 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) [2024-10-31 22:09:55,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:55,848 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:55,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:09:56,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:56,050 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)] === [2024-10-31 22:09:56,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1646220155, now seen corresponding path program 7 times [2024-10-31 22:09:56,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:56,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127623968] [2024-10-31 22:09:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:56,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:56,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:56,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127623968] [2024-10-31 22:09:56,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127623968] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:56,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345105751] [2024-10-31 22:09:56,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-31 22:09:56,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:56,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:56,146 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:56,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:09:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:56,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:09:56,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:56,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:56,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345105751] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:56,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:56,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-10-31 22:09:56,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037365443] [2024-10-31 22:09:56,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:56,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:09:56,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:56,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:09:56,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:09:56,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:56,384 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) [2024-10-31 22:09:56,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:56,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:56,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:56,676 INFO L124 PetriNetUnfolderBase]: 214/480 cut-off events. [2024-10-31 22:09:56,676 INFO L125 PetriNetUnfolderBase]: For 6164/6164 co-relation queries the response was YES. [2024-10-31 22:09:56,679 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. [2024-10-31 22:09:56,683 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 93 selfloop transitions, 57 changer transitions 1/154 dead transitions. [2024-10-31 22:09:56,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 154 transitions, 2392 flow [2024-10-31 22:09:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:09:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:09:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-10-31 22:09:56,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5863636363636363 [2024-10-31 22:09:56,685 INFO L175 Difference]: Start difference. First operand has 99 places, 105 transitions, 1636 flow. Second operand 11 states and 129 transitions. [2024-10-31 22:09:56,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 154 transitions, 2392 flow [2024-10-31 22:09:56,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 154 transitions, 2263 flow, removed 63 selfloop flow, removed 1 redundant places. [2024-10-31 22:09:56,718 INFO L231 Difference]: Finished difference. Result has 112 places, 118 transitions, 1933 flow [2024-10-31 22:09:56,719 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} [2024-10-31 22:09:56,719 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 90 predicate places. [2024-10-31 22:09:56,719 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 118 transitions, 1933 flow [2024-10-31 22:09:56,720 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) [2024-10-31 22:09:56,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:56,720 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:56,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:56,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:56,920 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)] === [2024-10-31 22:09:56,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:56,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1256785582, now seen corresponding path program 8 times [2024-10-31 22:09:56,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:56,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211128112] [2024-10-31 22:09:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:56,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:56,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:56,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211128112] [2024-10-31 22:09:56,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211128112] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:56,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219918370] [2024-10-31 22:09:56,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:09:56,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:56,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:56,984 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:56,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 22:09:57,044 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:09:57,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:57,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:09:57,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:57,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:57,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:57,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219918370] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:57,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:57,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-10-31 22:09:57,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165634276] [2024-10-31 22:09:57,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:57,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:09:57,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:57,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:09:57,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:09:57,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:57,230 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) [2024-10-31 22:09:57,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:57,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:57,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:57,487 INFO L124 PetriNetUnfolderBase]: 206/454 cut-off events. [2024-10-31 22:09:57,488 INFO L125 PetriNetUnfolderBase]: For 6677/6677 co-relation queries the response was YES. [2024-10-31 22:09:57,490 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. [2024-10-31 22:09:57,494 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 88 selfloop transitions, 41 changer transitions 1/133 dead transitions. [2024-10-31 22:09:57,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 133 transitions, 2293 flow [2024-10-31 22:09:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:09:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:09:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-10-31 22:09:57,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-10-31 22:09:57,496 INFO L175 Difference]: Start difference. First operand has 112 places, 118 transitions, 1933 flow. Second operand 10 states and 106 transitions. [2024-10-31 22:09:57,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 133 transitions, 2293 flow [2024-10-31 22:09:57,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 133 transitions, 2163 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-10-31 22:09:57,537 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 1820 flow [2024-10-31 22:09:57,537 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} [2024-10-31 22:09:57,538 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 95 predicate places. [2024-10-31 22:09:57,538 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 1820 flow [2024-10-31 22:09:57,538 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) [2024-10-31 22:09:57,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:57,539 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:57,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-31 22:09:57,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:57,741 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)] === [2024-10-31 22:09:57,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:57,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2142616824, now seen corresponding path program 9 times [2024-10-31 22:09:57,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:57,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889248162] [2024-10-31 22:09:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:57,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:57,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:57,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889248162] [2024-10-31 22:09:57,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889248162] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:57,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504167848] [2024-10-31 22:09:57,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:09:57,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:57,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:57,873 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:57,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-31 22:09:57,935 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-31 22:09:57,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:57,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:09:57,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:58,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:58,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504167848] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:58,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:58,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 14 [2024-10-31 22:09:58,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427605648] [2024-10-31 22:09:58,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:58,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:09:58,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:58,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:09:58,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:09:58,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:58,132 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) [2024-10-31 22:09:58,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:58,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:58,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:58,527 INFO L124 PetriNetUnfolderBase]: 319/673 cut-off events. [2024-10-31 22:09:58,527 INFO L125 PetriNetUnfolderBase]: For 12358/12358 co-relation queries the response was YES. [2024-10-31 22:09:58,530 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. [2024-10-31 22:09:58,536 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 130 selfloop transitions, 55 changer transitions 3/191 dead transitions. [2024-10-31 22:09:58,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 191 transitions, 3216 flow [2024-10-31 22:09:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:09:58,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:09:58,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-10-31 22:09:58,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-10-31 22:09:58,538 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 1820 flow. Second operand 10 states and 128 transitions. [2024-10-31 22:09:58,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 191 transitions, 3216 flow [2024-10-31 22:09:58,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 191 transitions, 3134 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-10-31 22:09:58,589 INFO L231 Difference]: Finished difference. Result has 128 places, 151 transitions, 2618 flow [2024-10-31 22:09:58,589 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} [2024-10-31 22:09:58,591 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 106 predicate places. [2024-10-31 22:09:58,591 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 151 transitions, 2618 flow [2024-10-31 22:09:58,591 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) [2024-10-31 22:09:58,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:58,591 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:58,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-31 22:09:58,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:58,796 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)] === [2024-10-31 22:09:58,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:58,797 INFO L85 PathProgramCache]: Analyzing trace with hash -676128482, now seen corresponding path program 10 times [2024-10-31 22:09:58,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:58,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722946653] [2024-10-31 22:09:58,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:58,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:58,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:58,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722946653] [2024-10-31 22:09:58,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722946653] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:58,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775197949] [2024-10-31 22:09:58,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:09:58,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:58,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:58,961 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:58,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-31 22:09:59,017 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:09:59,017 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:59,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 22:09:59,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:59,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:59,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:59,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775197949] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:59,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:59,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2024-10-31 22:09:59,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397943817] [2024-10-31 22:09:59,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:59,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-31 22:09:59,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:59,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-31 22:09:59,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:09:59,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:09:59,512 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) [2024-10-31 22:09:59,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:59,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:09:59,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:00,628 INFO L124 PetriNetUnfolderBase]: 547/1120 cut-off events. [2024-10-31 22:10:00,629 INFO L125 PetriNetUnfolderBase]: For 24900/24900 co-relation queries the response was YES. [2024-10-31 22:10:00,635 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. [2024-10-31 22:10:00,644 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 155 selfloop transitions, 136 changer transitions 31/325 dead transitions. [2024-10-31 22:10:00,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 325 transitions, 6321 flow [2024-10-31 22:10:00,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-31 22:10:00,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-31 22:10:00,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 261 transitions. [2024-10-31 22:10:00,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5673913043478261 [2024-10-31 22:10:00,646 INFO L175 Difference]: Start difference. First operand has 128 places, 151 transitions, 2618 flow. Second operand 23 states and 261 transitions. [2024-10-31 22:10:00,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 325 transitions, 6321 flow [2024-10-31 22:10:00,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 325 transitions, 6054 flow, removed 127 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:00,753 INFO L231 Difference]: Finished difference. Result has 160 places, 239 transitions, 4829 flow [2024-10-31 22:10:00,754 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} [2024-10-31 22:10:00,754 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 138 predicate places. [2024-10-31 22:10:00,754 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 239 transitions, 4829 flow [2024-10-31 22:10:00,755 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) [2024-10-31 22:10:00,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:00,755 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:00,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:00,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:00,956 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)] === [2024-10-31 22:10:00,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1809904300, now seen corresponding path program 11 times [2024-10-31 22:10:00,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:00,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671247731] [2024-10-31 22:10:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:00,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:01,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:01,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671247731] [2024-10-31 22:10:01,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671247731] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:01,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225248943] [2024-10-31 22:10:01,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 22:10:01,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:01,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:01,088 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:01,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-31 22:10:01,144 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:10:01,144 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:01,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:10:01,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:01,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:10:01,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:01,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225248943] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:01,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:10:01,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-10-31 22:10:01,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326538063] [2024-10-31 22:10:01,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:01,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:01,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:01,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:01,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:10:01,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:10:01,206 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) [2024-10-31 22:10:01,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:01,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:10:01,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:01,645 INFO L124 PetriNetUnfolderBase]: 509/1018 cut-off events. [2024-10-31 22:10:01,646 INFO L125 PetriNetUnfolderBase]: For 28830/28833 co-relation queries the response was YES. [2024-10-31 22:10:01,652 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. [2024-10-31 22:10:01,660 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 166 selfloop transitions, 21 changer transitions 67/257 dead transitions. [2024-10-31 22:10:01,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 257 transitions, 5618 flow [2024-10-31 22:10:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:10:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-10-31 22:10:01,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-10-31 22:10:01,661 INFO L175 Difference]: Start difference. First operand has 160 places, 239 transitions, 4829 flow. Second operand 6 states and 64 transitions. [2024-10-31 22:10:01,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 257 transitions, 5618 flow [2024-10-31 22:10:01,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 257 transitions, 4588 flow, removed 475 selfloop flow, removed 4 redundant places. [2024-10-31 22:10:01,825 INFO L231 Difference]: Finished difference. Result has 162 places, 183 transitions, 3084 flow [2024-10-31 22:10:01,826 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} [2024-10-31 22:10:01,826 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 140 predicate places. [2024-10-31 22:10:01,826 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 183 transitions, 3084 flow [2024-10-31 22:10:01,827 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) [2024-10-31 22:10:01,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:01,827 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:01,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-31 22:10:02,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-31 22:10:02,030 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)] === [2024-10-31 22:10:02,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:02,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1732684414, now seen corresponding path program 12 times [2024-10-31 22:10:02,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:02,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659327439] [2024-10-31 22:10:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:02,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:02,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:02,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659327439] [2024-10-31 22:10:02,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659327439] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:02,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327675188] [2024-10-31 22:10:02,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-31 22:10:02,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:02,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:02,151 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:02,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-31 22:10:02,209 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-31 22:10:02,209 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:02,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:10:02,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:02,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:02,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:02,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327675188] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:02,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:02,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-10-31 22:10:02,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916193868] [2024-10-31 22:10:02,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:02,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:10:02,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:02,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:10:02,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:10:02,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:10:02,516 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) [2024-10-31 22:10:02,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:02,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:10:02,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:03,458 INFO L124 PetriNetUnfolderBase]: 584/1196 cut-off events. [2024-10-31 22:10:03,459 INFO L125 PetriNetUnfolderBase]: For 53442/53442 co-relation queries the response was YES. [2024-10-31 22:10:03,468 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. [2024-10-31 22:10:03,478 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 134 selfloop transitions, 177 changer transitions 26/340 dead transitions. [2024-10-31 22:10:03,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 340 transitions, 6643 flow [2024-10-31 22:10:03,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-31 22:10:03,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-31 22:10:03,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 306 transitions. [2024-10-31 22:10:03,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2024-10-31 22:10:03,481 INFO L175 Difference]: Start difference. First operand has 162 places, 183 transitions, 3084 flow. Second operand 26 states and 306 transitions. [2024-10-31 22:10:03,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 340 transitions, 6643 flow [2024-10-31 22:10:03,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 340 transitions, 5951 flow, removed 166 selfloop flow, removed 18 redundant places. [2024-10-31 22:10:03,662 INFO L231 Difference]: Finished difference. Result has 168 places, 246 transitions, 4546 flow [2024-10-31 22:10:03,662 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} [2024-10-31 22:10:03,663 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 146 predicate places. [2024-10-31 22:10:03,663 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 246 transitions, 4546 flow [2024-10-31 22:10:03,663 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) [2024-10-31 22:10:03,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:03,663 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:03,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-31 22:10:03,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-31 22:10:03,868 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)] === [2024-10-31 22:10:03,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:03,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1378983225, now seen corresponding path program 13 times [2024-10-31 22:10:03,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:03,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376956972] [2024-10-31 22:10:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:03,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:03,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:03,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376956972] [2024-10-31 22:10:03,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376956972] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:03,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359294091] [2024-10-31 22:10:03,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-31 22:10:03,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:03,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:03,984 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:03,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-31 22:10:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:04,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:10:04,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:04,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:04,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359294091] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:04,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:04,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-31 22:10:04,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657925720] [2024-10-31 22:10:04,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:04,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:10:04,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:10:04,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:10:04,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:10:04,230 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) [2024-10-31 22:10:04,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:04,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:10:04,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:04,842 INFO L124 PetriNetUnfolderBase]: 556/1177 cut-off events. [2024-10-31 22:10:04,842 INFO L125 PetriNetUnfolderBase]: For 53560/53560 co-relation queries the response was YES. [2024-10-31 22:10:04,852 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. [2024-10-31 22:10:04,861 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 129 selfloop transitions, 132 changer transitions 46/310 dead transitions. [2024-10-31 22:10:04,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 310 transitions, 6358 flow [2024-10-31 22:10:04,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:10:04,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:10:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-10-31 22:10:04,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-10-31 22:10:04,864 INFO L175 Difference]: Start difference. First operand has 168 places, 246 transitions, 4546 flow. Second operand 12 states and 138 transitions. [2024-10-31 22:10:04,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 310 transitions, 6358 flow [2024-10-31 22:10:05,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 310 transitions, 5679 flow, removed 297 selfloop flow, removed 7 redundant places. [2024-10-31 22:10:05,111 INFO L231 Difference]: Finished difference. Result has 175 places, 230 transitions, 4582 flow [2024-10-31 22:10:05,111 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} [2024-10-31 22:10:05,112 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 153 predicate places. [2024-10-31 22:10:05,112 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 230 transitions, 4582 flow [2024-10-31 22:10:05,112 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) [2024-10-31 22:10:05,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:05,112 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:05,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:05,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-31 22:10:05,313 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)] === [2024-10-31 22:10:05,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:05,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1845930441, now seen corresponding path program 14 times [2024-10-31 22:10:05,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:05,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797156734] [2024-10-31 22:10:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:05,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:05,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:05,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797156734] [2024-10-31 22:10:05,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797156734] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:05,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488459977] [2024-10-31 22:10:05,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:10:05,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:05,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:05,400 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:05,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-31 22:10:05,458 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:10:05,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:05,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:10:05,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:05,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:05,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488459977] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:05,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:05,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-10-31 22:10:05,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931106320] [2024-10-31 22:10:05,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:05,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-31 22:10:05,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:05,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-31 22:10:05,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:10:05,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:10:05,686 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) [2024-10-31 22:10:05,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:05,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:10:05,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:06,349 INFO L124 PetriNetUnfolderBase]: 466/968 cut-off events. [2024-10-31 22:10:06,349 INFO L125 PetriNetUnfolderBase]: For 45890/45890 co-relation queries the response was YES. [2024-10-31 22:10:06,356 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. [2024-10-31 22:10:06,371 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 125 selfloop transitions, 146 changer transitions 3/277 dead transitions. [2024-10-31 22:10:06,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 277 transitions, 5654 flow [2024-10-31 22:10:06,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 22:10:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-31 22:10:06,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 164 transitions. [2024-10-31 22:10:06,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-10-31 22:10:06,373 INFO L175 Difference]: Start difference. First operand has 175 places, 230 transitions, 4582 flow. Second operand 15 states and 164 transitions. [2024-10-31 22:10:06,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 277 transitions, 5654 flow [2024-10-31 22:10:06,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 277 transitions, 5083 flow, removed 266 selfloop flow, removed 6 redundant places. [2024-10-31 22:10:06,597 INFO L231 Difference]: Finished difference. Result has 183 places, 237 transitions, 4598 flow [2024-10-31 22:10:06,598 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} [2024-10-31 22:10:06,598 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 161 predicate places. [2024-10-31 22:10:06,598 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 237 transitions, 4598 flow [2024-10-31 22:10:06,599 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) [2024-10-31 22:10:06,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:06,599 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:06,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-31 22:10:06,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:06,800 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)] === [2024-10-31 22:10:06,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:06,800 INFO L85 PathProgramCache]: Analyzing trace with hash -825731912, now seen corresponding path program 15 times [2024-10-31 22:10:06,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:06,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974024554] [2024-10-31 22:10:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:06,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:06,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:06,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974024554] [2024-10-31 22:10:06,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974024554] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:06,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142454577] [2024-10-31 22:10:06,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:10:06,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:06,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:06,911 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:06,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-31 22:10:06,969 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-31 22:10:06,969 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:06,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:10:06,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:10:07,052 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:07,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142454577] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:07,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:10:07,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-10-31 22:10:07,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907241703] [2024-10-31 22:10:07,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:07,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:07,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:07,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:07,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:10:07,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:10:07,057 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) [2024-10-31 22:10:07,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:07,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:10:07,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:07,477 INFO L124 PetriNetUnfolderBase]: 537/1173 cut-off events. [2024-10-31 22:10:07,478 INFO L125 PetriNetUnfolderBase]: For 19473/19473 co-relation queries the response was YES. [2024-10-31 22:10:07,485 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. [2024-10-31 22:10:07,492 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 203 selfloop transitions, 26 changer transitions 64/296 dead transitions. [2024-10-31 22:10:07,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 296 transitions, 6075 flow [2024-10-31 22:10:07,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:10:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-10-31 22:10:07,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-10-31 22:10:07,494 INFO L175 Difference]: Start difference. First operand has 183 places, 237 transitions, 4598 flow. Second operand 6 states and 71 transitions. [2024-10-31 22:10:07,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 296 transitions, 6075 flow [2024-10-31 22:10:07,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 296 transitions, 5871 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-10-31 22:10:07,623 INFO L231 Difference]: Finished difference. Result has 186 places, 209 transitions, 4118 flow [2024-10-31 22:10:07,623 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} [2024-10-31 22:10:07,624 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 164 predicate places. [2024-10-31 22:10:07,624 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 209 transitions, 4118 flow [2024-10-31 22:10:07,624 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) [2024-10-31 22:10:07,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:07,624 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:07,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:07,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:07,825 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)] === [2024-10-31 22:10:07,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:07,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2141321098, now seen corresponding path program 16 times [2024-10-31 22:10:07,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:07,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344592468] [2024-10-31 22:10:07,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:07,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:07,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:07,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344592468] [2024-10-31 22:10:07,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344592468] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:07,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8399539] [2024-10-31 22:10:07,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:10:07,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:07,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:07,896 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:07,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-31 22:10:07,951 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:10:07,951 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:07,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:10:07,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:08,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:08,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8399539] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:08,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:08,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-10-31 22:10:08,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116938494] [2024-10-31 22:10:08,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:08,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:10:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:08,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:10:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:10:08,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:10:08,152 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) [2024-10-31 22:10:08,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:08,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:10:08,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:08,719 INFO L124 PetriNetUnfolderBase]: 453/956 cut-off events. [2024-10-31 22:10:08,719 INFO L125 PetriNetUnfolderBase]: For 19572/19572 co-relation queries the response was YES. [2024-10-31 22:10:08,726 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. [2024-10-31 22:10:08,733 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 141 selfloop transitions, 137 changer transitions 8/289 dead transitions. [2024-10-31 22:10:08,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 289 transitions, 5949 flow [2024-10-31 22:10:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 22:10:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-31 22:10:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 175 transitions. [2024-10-31 22:10:08,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-10-31 22:10:08,734 INFO L175 Difference]: Start difference. First operand has 186 places, 209 transitions, 4118 flow. Second operand 16 states and 175 transitions. [2024-10-31 22:10:08,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 289 transitions, 5949 flow [2024-10-31 22:10:08,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 289 transitions, 5767 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-10-31 22:10:08,888 INFO L231 Difference]: Finished difference. Result has 196 places, 244 transitions, 5380 flow [2024-10-31 22:10:08,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3938, PETRI_DIFFERENCE_MINUEND_PLACES=174, 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=5380, PETRI_PLACES=196, PETRI_TRANSITIONS=244} [2024-10-31 22:10:08,890 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 174 predicate places. [2024-10-31 22:10:08,890 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 244 transitions, 5380 flow [2024-10-31 22:10:08,890 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) [2024-10-31 22:10:08,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:08,890 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:08,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-31 22:10:09,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:09,091 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)] === [2024-10-31 22:10:09,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash 947284689, now seen corresponding path program 17 times [2024-10-31 22:10:09,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:09,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391188855] [2024-10-31 22:10:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:09,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:09,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:09,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391188855] [2024-10-31 22:10:09,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391188855] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:09,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225069977] [2024-10-31 22:10:09,254 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 22:10:09,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:09,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:09,256 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:09,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-31 22:10:09,315 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-31 22:10:09,315 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:09,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:10:09,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-31 22:10:09,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:09,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225069977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:09,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:10:09,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-10-31 22:10:09,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865881843] [2024-10-31 22:10:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:09,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:09,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:09,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:09,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:10:09,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:10:09,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 244 transitions, 5380 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) [2024-10-31 22:10:09,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:09,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:10:09,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:09,795 INFO L124 PetriNetUnfolderBase]: 443/906 cut-off events. [2024-10-31 22:10:09,795 INFO L125 PetriNetUnfolderBase]: For 18782/18782 co-relation queries the response was YES. [2024-10-31 22:10:09,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8821 conditions, 906 events. 443/906 cut-off events. For 18782/18782 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4866 event pairs, 3 based on Foata normal form. 8/913 useless extension candidates. Maximal degree in co-relation 8750. Up to 640 conditions per place. [2024-10-31 22:10:09,808 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 213 selfloop transitions, 13 changer transitions 32/261 dead transitions. [2024-10-31 22:10:09,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 261 transitions, 6099 flow [2024-10-31 22:10:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:10:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-10-31 22:10:09,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-31 22:10:09,810 INFO L175 Difference]: Start difference. First operand has 196 places, 244 transitions, 5380 flow. Second operand 6 states and 66 transitions. [2024-10-31 22:10:09,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 261 transitions, 6099 flow [2024-10-31 22:10:09,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 261 transitions, 5693 flow, removed 182 selfloop flow, removed 6 redundant places. [2024-10-31 22:10:09,978 INFO L231 Difference]: Finished difference. Result has 197 places, 222 transitions, 4641 flow [2024-10-31 22:10:09,978 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} [2024-10-31 22:10:09,979 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 175 predicate places. [2024-10-31 22:10:09,979 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 222 transitions, 4641 flow [2024-10-31 22:10:09,979 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) [2024-10-31 22:10:09,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:09,979 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:10,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:10,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-31 22:10:10,180 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)] === [2024-10-31 22:10:10,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:10,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1592140175, now seen corresponding path program 18 times [2024-10-31 22:10:10,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:10,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717861060] [2024-10-31 22:10:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:10,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:10,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717861060] [2024-10-31 22:10:10,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717861060] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420519213] [2024-10-31 22:10:10,355 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-31 22:10:10,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:10,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:10,359 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:10,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-31 22:10:10,449 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-31 22:10:10,449 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:10,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 22:10:10,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:10,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:10:10,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420519213] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:10,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:10,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5] total 19 [2024-10-31 22:10:10,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971022810] [2024-10-31 22:10:10,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:10,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-31 22:10:10,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:10,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-31 22:10:10,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-10-31 22:10:10,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:10:10,705 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) [2024-10-31 22:10:10,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:10,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:10:10,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:11,305 INFO L124 PetriNetUnfolderBase]: 455/907 cut-off events. [2024-10-31 22:10:11,306 INFO L125 PetriNetUnfolderBase]: For 20642/20642 co-relation queries the response was YES. [2024-10-31 22:10:11,312 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. [2024-10-31 22:10:11,318 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 196 selfloop transitions, 77 changer transitions 19/295 dead transitions. [2024-10-31 22:10:11,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 295 transitions, 6542 flow [2024-10-31 22:10:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 22:10:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-31 22:10:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-10-31 22:10:11,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6038461538461538 [2024-10-31 22:10:11,320 INFO L175 Difference]: Start difference. First operand has 197 places, 222 transitions, 4641 flow. Second operand 13 states and 157 transitions. [2024-10-31 22:10:11,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 295 transitions, 6542 flow [2024-10-31 22:10:11,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 295 transitions, 6177 flow, removed 96 selfloop flow, removed 12 redundant places. [2024-10-31 22:10:11,447 INFO L231 Difference]: Finished difference. Result has 193 places, 257 transitions, 5445 flow [2024-10-31 22:10:11,447 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} [2024-10-31 22:10:11,448 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 171 predicate places. [2024-10-31 22:10:11,448 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 257 transitions, 5445 flow [2024-10-31 22:10:11,449 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) [2024-10-31 22:10:11,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:11,449 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:11,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:11,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-31 22:10:11,657 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)] === [2024-10-31 22:10:11,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:11,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1172172117, now seen corresponding path program 19 times [2024-10-31 22:10:11,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:11,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965686727] [2024-10-31 22:10:11,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:11,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:11,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:11,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965686727] [2024-10-31 22:10:11,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965686727] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:11,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38665868] [2024-10-31 22:10:11,827 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-31 22:10:11,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:11,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:11,830 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:11,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-31 22:10:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:11,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-31 22:10:11,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:12,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:12,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38665868] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:12,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:12,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 21 [2024-10-31 22:10:12,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653672013] [2024-10-31 22:10:12,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:12,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-31 22:10:12,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:12,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-31 22:10:12,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-10-31 22:10:12,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:10:12,515 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) [2024-10-31 22:10:12,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:12,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:10:12,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:14,086 INFO L124 PetriNetUnfolderBase]: 631/1277 cut-off events. [2024-10-31 22:10:14,087 INFO L125 PetriNetUnfolderBase]: For 27984/27984 co-relation queries the response was YES. [2024-10-31 22:10:14,098 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. [2024-10-31 22:10:14,109 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 206 selfloop transitions, 166 changer transitions 40/415 dead transitions. [2024-10-31 22:10:14,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 415 transitions, 9770 flow [2024-10-31 22:10:14,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-31 22:10:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-31 22:10:14,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 240 transitions. [2024-10-31 22:10:14,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-31 22:10:14,111 INFO L175 Difference]: Start difference. First operand has 193 places, 257 transitions, 5445 flow. Second operand 22 states and 240 transitions. [2024-10-31 22:10:14,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 415 transitions, 9770 flow [2024-10-31 22:10:14,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 415 transitions, 9564 flow, removed 79 selfloop flow, removed 3 redundant places. [2024-10-31 22:10:14,353 INFO L231 Difference]: Finished difference. Result has 227 places, 337 transitions, 8101 flow [2024-10-31 22:10:14,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5241, PETRI_DIFFERENCE_MINUEND_PLACES=190, 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=8101, PETRI_PLACES=227, PETRI_TRANSITIONS=337} [2024-10-31 22:10:14,354 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 205 predicate places. [2024-10-31 22:10:14,354 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 337 transitions, 8101 flow [2024-10-31 22:10:14,354 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) [2024-10-31 22:10:14,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:14,354 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:14,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:14,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-31 22:10:14,555 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)] === [2024-10-31 22:10:14,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1756998325, now seen corresponding path program 20 times [2024-10-31 22:10:14,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:14,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785140479] [2024-10-31 22:10:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:14,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:14,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:14,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785140479] [2024-10-31 22:10:14,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785140479] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:14,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21842848] [2024-10-31 22:10:14,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:10:14,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:14,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:14,700 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:14,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35d1603e-58fd-444f-87ae-3a5cbaead69e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-31 22:10:14,755 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:10:14,755 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:10:14,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 22:10:14,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:14,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:14,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:15,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21842848] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:15,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:15,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2024-10-31 22:10:15,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206642031] [2024-10-31 22:10:15,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:15,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-31 22:10:15,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:15,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-31 22:10:15,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2024-10-31 22:10:15,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-10-31 22:10:15,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 337 transitions, 8101 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) [2024-10-31 22:10:15,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:15,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-10-31 22:10:15,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand