./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-figure1.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_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/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_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-figure1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/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_87c7917c-dfa6-4212-8c52-5a334a051a23/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 611602be63cf2d0baa947efd80226c155579158ab3e72558e2c6507fec5bab01 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:56:21,093 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:56:21,198 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 21:56:21,204 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:56:21,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:56:21,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:56:21,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:56:21,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:56:21,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:56:21,256 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:56:21,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:56:21,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:56:21,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:56:21,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:56:21,259 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:56:21,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:56:21,259 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:56:21,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:56:21,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:56:21,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:56:21,261 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 21:56:21,265 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 21:56:21,265 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 21:56:21,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:56:21,266 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 21:56:21,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:56:21,266 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:56:21,266 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:56:21,267 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:56:21,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:56:21,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:56:21,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:56:21,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:56:21,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:21,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:56:21,271 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:56:21,272 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:56:21,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:56:21,272 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:56:21,272 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:56:21,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:56:21,274 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:56:21,274 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_87c7917c-dfa6-4212-8c52-5a334a051a23/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 611602be63cf2d0baa947efd80226c155579158ab3e72558e2c6507fec5bab01 [2024-10-31 21:56:21,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:56:21,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:56:21,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:56:21,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:56:21,596 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:56:21,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-figure1.wvr.c Unable to find full path for "g++" [2024-10-31 21:56:23,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:56:23,940 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:56:23,941 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-10-31 21:56:23,952 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/data/3bff8cfb5/50913e98d79b421f90b26a8a96fa40c7/FLAG7e871773c [2024-10-31 21:56:23,967 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/data/3bff8cfb5/50913e98d79b421f90b26a8a96fa40c7 [2024-10-31 21:56:23,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:56:23,971 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:56:23,973 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:23,973 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:56:23,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:56:23,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:23" (1/1) ... [2024-10-31 21:56:23,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cc8305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:23, skipping insertion in model container [2024-10-31 21:56:23,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:23" (1/1) ... [2024-10-31 21:56:24,006 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:56:24,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:24,252 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:56:24,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:24,307 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:56:24,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24 WrapperNode [2024-10-31 21:56:24,307 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:24,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:24,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:56:24,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:56:24,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:24,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:24,349 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2024-10-31 21:56:24,349 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:24,350 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:56:24,350 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:56:24,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:56:24,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:24,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:24,367 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:24,381 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 21:56:24,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:24,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:24,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:24,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:24,392 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:24,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:24,396 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:56:24,397 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:56:24,397 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:56:24,397 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:56:24,398 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:24,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:24,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:24,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:56:24,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:56:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:56:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 21:56:24,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 21:56:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 21:56:24,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 21:56:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:56:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 21:56:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 21:56:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:56:24,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:56:24,486 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 21:56:24,627 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:56:24,630 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:56:24,808 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:56:24,808 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:56:24,992 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:56:24,992 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 21:56:24,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:24 BoogieIcfgContainer [2024-10-31 21:56:24,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:56:25,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:56:25,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:56:25,019 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:56:25,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:56:23" (1/3) ... [2024-10-31 21:56:25,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6591fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:25, skipping insertion in model container [2024-10-31 21:56:25,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (2/3) ... [2024-10-31 21:56:25,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6591fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:25, skipping insertion in model container [2024-10-31 21:56:25,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:24" (3/3) ... [2024-10-31 21:56:25,025 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-10-31 21:56:25,047 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:56:25,047 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 21:56:25,047 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:56:25,109 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 21:56:25,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-10-31 21:56:25,205 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-10-31 21:56:25,208 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 21:56:25,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-10-31 21:56:25,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-10-31 21:56:25,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-10-31 21:56:25,235 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:56:25,246 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;@103197c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:56:25,248 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 21:56:25,268 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:56:25,269 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-31 21:56:25,269 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 21:56:25,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:25,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:25,272 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 21:56:25,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:25,279 INFO L85 PathProgramCache]: Analyzing trace with hash 353442512, now seen corresponding path program 1 times [2024-10-31 21:56:25,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:25,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851608099] [2024-10-31 21:56:25,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:25,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,624 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 21:56:25,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:25,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851608099] [2024-10-31 21:56:25,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851608099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:25,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:25,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:56:25,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218834717] [2024-10-31 21:56:25,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:25,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:56:25,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:25,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:56:25,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:56:25,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-31 21:56:25,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:25,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:25,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-31 21:56:25,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:25,840 INFO L124 PetriNetUnfolderBase]: 76/157 cut-off events. [2024-10-31 21:56:25,840 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-31 21:56:25,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 157 events. 76/157 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 513 event pairs, 27 based on Foata normal form. 9/165 useless extension candidates. Maximal degree in co-relation 273. Up to 91 conditions per place. [2024-10-31 21:56:25,847 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 20 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-10-31 21:56:25,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 127 flow [2024-10-31 21:56:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:56:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:56:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-10-31 21:56:25,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-10-31 21:56:25,864 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 46 transitions. [2024-10-31 21:56:25,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 127 flow [2024-10-31 21:56:25,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 21:56:25,871 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-10-31 21:56:25,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-10-31 21:56:25,877 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2024-10-31 21:56:25,877 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-10-31 21:56:25,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:25,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:25,878 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:25,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:56:25,879 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 21:56:25,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:25,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1224174837, now seen corresponding path program 1 times [2024-10-31 21:56:25,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:25,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912257128] [2024-10-31 21:56:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:25,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,077 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 21:56:26,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:26,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912257128] [2024-10-31 21:56:26,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912257128] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:26,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:26,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:56:26,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835988569] [2024-10-31 21:56:26,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:26,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:26,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:26,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:26,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:26,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 21:56:26,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 21:56:26,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:26,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 21:56:26,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:26,263 INFO L124 PetriNetUnfolderBase]: 132/252 cut-off events. [2024-10-31 21:56:26,263 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-31 21:56:26,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 252 events. 132/252 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 970 event pairs, 55 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 197. Up to 161 conditions per place. [2024-10-31 21:56:26,267 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 30 selfloop transitions, 7 changer transitions 3/42 dead transitions. [2024-10-31 21:56:26,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 42 transitions, 191 flow [2024-10-31 21:56:26,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:56:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-10-31 21:56:26,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-31 21:56:26,269 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 66 transitions. [2024-10-31 21:56:26,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 42 transitions, 191 flow [2024-10-31 21:56:26,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 42 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:56:26,272 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 106 flow [2024-10-31 21:56:26,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2024-10-31 21:56:26,275 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-10-31 21:56:26,276 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 106 flow [2024-10-31 21:56:26,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 21:56:26,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:26,277 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:26,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:56:26,277 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 21:56:26,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:26,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1871034303, now seen corresponding path program 2 times [2024-10-31 21:56:26,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:26,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780328980] [2024-10-31 21:56:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:26,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,453 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 21:56:26,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:26,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780328980] [2024-10-31 21:56:26,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780328980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:26,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:26,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:56:26,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660560811] [2024-10-31 21:56:26,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:26,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:26,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:26,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:26,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:56:26,476 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 21:56:26,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:26,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:26,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 21:56:26,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:26,698 INFO L124 PetriNetUnfolderBase]: 150/287 cut-off events. [2024-10-31 21:56:26,698 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-10-31 21:56:26,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 287 events. 150/287 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1129 event pairs, 4 based on Foata normal form. 13/300 useless extension candidates. Maximal degree in co-relation 357. Up to 122 conditions per place. [2024-10-31 21:56:26,705 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 44 selfloop transitions, 10 changer transitions 1/57 dead transitions. [2024-10-31 21:56:26,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 57 transitions, 331 flow [2024-10-31 21:56:26,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:56:26,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:56:26,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-10-31 21:56:26,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-10-31 21:56:26,709 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 106 flow. Second operand 7 states and 87 transitions. [2024-10-31 21:56:26,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 57 transitions, 331 flow [2024-10-31 21:56:26,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 57 transitions, 329 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-31 21:56:26,715 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 186 flow [2024-10-31 21:56:26,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-10-31 21:56:26,716 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-10-31 21:56:26,716 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 186 flow [2024-10-31 21:56:26,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:26,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:26,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:26,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:56:26,717 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 21:56:26,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:26,718 INFO L85 PathProgramCache]: Analyzing trace with hash -91052613, now seen corresponding path program 3 times [2024-10-31 21:56:26,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:26,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232719986] [2024-10-31 21:56:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:26,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,854 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 21:56:26,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:26,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232719986] [2024-10-31 21:56:26,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232719986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:26,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:26,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:56:26,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795571462] [2024-10-31 21:56:26,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:26,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:26,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:26,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:26,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:26,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 21:56:26,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 21:56:26,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:26,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 21:56:26,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:27,020 INFO L124 PetriNetUnfolderBase]: 197/374 cut-off events. [2024-10-31 21:56:27,021 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-10-31 21:56:27,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 374 events. 197/374 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1519 event pairs, 63 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 852. Up to 167 conditions per place. [2024-10-31 21:56:27,026 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 44 selfloop transitions, 10 changer transitions 2/58 dead transitions. [2024-10-31 21:56:27,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 58 transitions, 433 flow [2024-10-31 21:56:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:27,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:56:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-10-31 21:56:27,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-31 21:56:27,031 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 186 flow. Second operand 5 states and 63 transitions. [2024-10-31 21:56:27,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 58 transitions, 433 flow [2024-10-31 21:56:27,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:56:27,039 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 237 flow [2024-10-31 21:56:27,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2024-10-31 21:56:27,041 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-10-31 21:56:27,042 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 237 flow [2024-10-31 21:56:27,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 21:56:27,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:27,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:27,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:56:27,044 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 21:56:27,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash -572072187, now seen corresponding path program 4 times [2024-10-31 21:56:27,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:27,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623314008] [2024-10-31 21:56:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:27,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:27,170 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 21:56:27,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:27,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623314008] [2024-10-31 21:56:27,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623314008] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:27,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95201182] [2024-10-31 21:56:27,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 21:56:27,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:27,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:27,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:27,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:56:27,233 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 21:56:27,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:56:27,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 21:56:27,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:27,358 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 21:56:27,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:27,432 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 21:56:27,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95201182] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:27,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:27,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-31 21:56:27,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317581727] [2024-10-31 21:56:27,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:27,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 21:56:27,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:27,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 21:56:27,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-31 21:56:27,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-31 21:56:27,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 237 flow. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:27,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:27,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-31 21:56:27,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:27,941 INFO L124 PetriNetUnfolderBase]: 363/634 cut-off events. [2024-10-31 21:56:27,942 INFO L125 PetriNetUnfolderBase]: For 1452/1452 co-relation queries the response was YES. [2024-10-31 21:56:27,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2325 conditions, 634 events. 363/634 cut-off events. For 1452/1452 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2649 event pairs, 20 based on Foata normal form. 13/647 useless extension candidates. Maximal degree in co-relation 1993. Up to 147 conditions per place. [2024-10-31 21:56:27,948 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 73 selfloop transitions, 40 changer transitions 1/115 dead transitions. [2024-10-31 21:56:27,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 115 transitions, 884 flow [2024-10-31 21:56:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 21:56:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-31 21:56:27,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 164 transitions. [2024-10-31 21:56:27,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-10-31 21:56:27,951 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 237 flow. Second operand 15 states and 164 transitions. [2024-10-31 21:56:27,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 115 transitions, 884 flow [2024-10-31 21:56:27,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 115 transitions, 846 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-31 21:56:27,966 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 556 flow [2024-10-31 21:56:27,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=556, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-10-31 21:56:27,970 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-10-31 21:56:27,970 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 556 flow [2024-10-31 21:56:27,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:27,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:27,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:27,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 21:56:28,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:28,172 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 21:56:28,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:28,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1841011263, now seen corresponding path program 5 times [2024-10-31 21:56:28,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:28,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390015504] [2024-10-31 21:56:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:28,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:28,272 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 21:56:28,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:28,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390015504] [2024-10-31 21:56:28,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390015504] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:28,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515152279] [2024-10-31 21:56:28,274 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 21:56:28,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:28,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:28,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:28,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 21:56:28,341 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:56:28,341 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:56:28,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 21:56:28,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:28,417 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 21:56:28,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:28,471 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 21:56:28,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515152279] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:28,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:28,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-31 21:56:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823416703] [2024-10-31 21:56:28,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:28,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 21:56:28,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 21:56:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-31 21:56:28,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-31 21:56:28,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 556 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 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 21:56:28,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:28,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-31 21:56:28,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:28,758 INFO L124 PetriNetUnfolderBase]: 349/618 cut-off events. [2024-10-31 21:56:28,760 INFO L125 PetriNetUnfolderBase]: For 2847/2847 co-relation queries the response was YES. [2024-10-31 21:56:28,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 618 events. 349/618 cut-off events. For 2847/2847 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2632 event pairs, 57 based on Foata normal form. 13/631 useless extension candidates. Maximal degree in co-relation 2374. Up to 223 conditions per place. [2024-10-31 21:56:28,767 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 65 selfloop transitions, 37 changer transitions 1/104 dead transitions. [2024-10-31 21:56:28,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 104 transitions, 1041 flow [2024-10-31 21:56:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 21:56:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 21:56:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-10-31 21:56:28,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-10-31 21:56:28,769 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 556 flow. Second operand 8 states and 97 transitions. [2024-10-31 21:56:28,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 104 transitions, 1041 flow [2024-10-31 21:56:28,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 104 transitions, 902 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-10-31 21:56:28,783 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 678 flow [2024-10-31 21:56:28,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=678, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-10-31 21:56:28,785 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-10-31 21:56:28,786 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 678 flow [2024-10-31 21:56:28,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 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 21:56:28,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:28,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:28,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 21:56:28,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:28,991 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 21:56:28,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:28,991 INFO L85 PathProgramCache]: Analyzing trace with hash 55239027, now seen corresponding path program 6 times [2024-10-31 21:56:28,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:28,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352320173] [2024-10-31 21:56:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:28,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,058 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 21:56:29,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:29,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352320173] [2024-10-31 21:56:29,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352320173] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:29,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:29,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:56:29,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609251096] [2024-10-31 21:56:29,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:29,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:29,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:29,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:29,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:29,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 21:56:29,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 678 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 21:56:29,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:29,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 21:56:29,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:29,232 INFO L124 PetriNetUnfolderBase]: 286/525 cut-off events. [2024-10-31 21:56:29,232 INFO L125 PetriNetUnfolderBase]: For 2539/2541 co-relation queries the response was YES. [2024-10-31 21:56:29,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 525 events. 286/525 cut-off events. For 2539/2541 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2226 event pairs, 81 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 2112. Up to 266 conditions per place. [2024-10-31 21:56:29,238 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 48 selfloop transitions, 22 changer transitions 2/84 dead transitions. [2024-10-31 21:56:29,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 84 transitions, 883 flow [2024-10-31 21:56:29,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:29,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:56:29,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-10-31 21:56:29,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-31 21:56:29,239 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 678 flow. Second operand 5 states and 60 transitions. [2024-10-31 21:56:29,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 84 transitions, 883 flow [2024-10-31 21:56:29,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 814 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-10-31 21:56:29,252 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 647 flow [2024-10-31 21:56:29,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=647, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2024-10-31 21:56:29,253 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-10-31 21:56:29,253 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 647 flow [2024-10-31 21:56:29,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 21:56:29,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:29,254 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:29,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 21:56:29,254 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 21:56:29,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:29,255 INFO L85 PathProgramCache]: Analyzing trace with hash 575401179, now seen corresponding path program 1 times [2024-10-31 21:56:29,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:29,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628655671] [2024-10-31 21:56:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:29,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,353 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 21:56:29,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:29,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628655671] [2024-10-31 21:56:29,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628655671] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:29,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456408989] [2024-10-31 21:56:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:29,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:29,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:29,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:29,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 21:56:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:56:29,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:29,470 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 21:56:29,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:29,522 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 21:56:29,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456408989] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:29,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:29,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 5 [2024-10-31 21:56:29,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450741904] [2024-10-31 21:56:29,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:29,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:29,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:29,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:29,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:56:29,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-31 21:56:29,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 647 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:29,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:29,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-31 21:56:29,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:29,782 INFO L124 PetriNetUnfolderBase]: 446/869 cut-off events. [2024-10-31 21:56:29,782 INFO L125 PetriNetUnfolderBase]: For 4018/4031 co-relation queries the response was YES. [2024-10-31 21:56:29,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3592 conditions, 869 events. 446/869 cut-off events. For 4018/4031 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4396 event pairs, 69 based on Foata normal form. 18/882 useless extension candidates. Maximal degree in co-relation 2715. Up to 337 conditions per place. [2024-10-31 21:56:29,793 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 92 selfloop transitions, 5 changer transitions 15/130 dead transitions. [2024-10-31 21:56:29,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 130 transitions, 1407 flow [2024-10-31 21:56:29,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:56:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:56:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-10-31 21:56:29,794 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-31 21:56:29,795 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 647 flow. Second operand 4 states and 66 transitions. [2024-10-31 21:56:29,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 130 transitions, 1407 flow [2024-10-31 21:56:29,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 130 transitions, 1315 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-31 21:56:29,815 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 632 flow [2024-10-31 21:56:29,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=632, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-10-31 21:56:29,818 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-10-31 21:56:29,819 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 632 flow [2024-10-31 21:56:29,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:29,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:29,820 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:29,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 21:56:30,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:30,021 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 21:56:30,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:30,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1582567342, now seen corresponding path program 2 times [2024-10-31 21:56:30,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:30,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385787561] [2024-10-31 21:56:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:30,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:30,114 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 21:56:30,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:30,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385787561] [2024-10-31 21:56:30,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385787561] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:30,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292581604] [2024-10-31 21:56:30,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:56:30,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:30,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:30,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:30,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 21:56:30,181 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:56:30,182 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:56:30,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:56:30,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:30,282 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 21:56:30,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:56:30,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292581604] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:30,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:30,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-31 21:56:30,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312634158] [2024-10-31 21:56:30,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:30,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 21:56:30,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:30,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 21:56:30,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-10-31 21:56:30,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-31 21:56:30,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 632 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:30,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:30,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-31 21:56:30,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:31,209 INFO L124 PetriNetUnfolderBase]: 1147/1898 cut-off events. [2024-10-31 21:56:31,210 INFO L125 PetriNetUnfolderBase]: For 7040/7040 co-relation queries the response was YES. [2024-10-31 21:56:31,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8293 conditions, 1898 events. 1147/1898 cut-off events. For 7040/7040 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8737 event pairs, 48 based on Foata normal form. 56/1936 useless extension candidates. Maximal degree in co-relation 6496. Up to 373 conditions per place. [2024-10-31 21:56:31,230 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 134 selfloop transitions, 100 changer transitions 7/242 dead transitions. [2024-10-31 21:56:31,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 242 transitions, 2261 flow [2024-10-31 21:56:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-31 21:56:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-31 21:56:31,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 281 transitions. [2024-10-31 21:56:31,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45032051282051283 [2024-10-31 21:56:31,233 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 632 flow. Second operand 26 states and 281 transitions. [2024-10-31 21:56:31,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 242 transitions, 2261 flow [2024-10-31 21:56:31,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 242 transitions, 2213 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-10-31 21:56:31,256 INFO L231 Difference]: Finished difference. Result has 113 places, 126 transitions, 1447 flow [2024-10-31 21:56:31,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1447, PETRI_PLACES=113, PETRI_TRANSITIONS=126} [2024-10-31 21:56:31,257 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 87 predicate places. [2024-10-31 21:56:31,257 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 126 transitions, 1447 flow [2024-10-31 21:56:31,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:31,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:31,257 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:31,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 21:56:31,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:31,462 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 21:56:31,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:31,462 INFO L85 PathProgramCache]: Analyzing trace with hash 83493486, now seen corresponding path program 3 times [2024-10-31 21:56:31,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:31,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965036838] [2024-10-31 21:56:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:31,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:31,646 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 21:56:31,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:31,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965036838] [2024-10-31 21:56:31,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965036838] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:31,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001068942] [2024-10-31 21:56:31,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 21:56:31,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:31,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:31,650 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:31,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 21:56:31,716 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-31 21:56:31,716 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:56:31,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:56:31,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:31,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:31,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001068942] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:31,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:31,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-31 21:56:31,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876851424] [2024-10-31 21:56:31,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:31,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 21:56:31,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:31,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 21:56:31,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-31 21:56:31,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-31 21:56:31,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 126 transitions, 1447 flow. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 21:56:31,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:31,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-31 21:56:31,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:32,778 INFO L124 PetriNetUnfolderBase]: 1428/2369 cut-off events. [2024-10-31 21:56:32,779 INFO L125 PetriNetUnfolderBase]: For 23001/23001 co-relation queries the response was YES. [2024-10-31 21:56:32,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13776 conditions, 2369 events. 1428/2369 cut-off events. For 23001/23001 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11655 event pairs, 69 based on Foata normal form. 24/2393 useless extension candidates. Maximal degree in co-relation 12169. Up to 658 conditions per place. [2024-10-31 21:56:32,807 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 114 selfloop transitions, 125 changer transitions 20/260 dead transitions. [2024-10-31 21:56:32,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 260 transitions, 3259 flow [2024-10-31 21:56:32,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 21:56:32,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-31 21:56:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 162 transitions. [2024-10-31 21:56:32,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-31 21:56:32,809 INFO L175 Difference]: Start difference. First operand has 113 places, 126 transitions, 1447 flow. Second operand 15 states and 162 transitions. [2024-10-31 21:56:32,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 260 transitions, 3259 flow [2024-10-31 21:56:32,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 260 transitions, 3062 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-10-31 21:56:32,900 INFO L231 Difference]: Finished difference. Result has 129 places, 177 transitions, 2340 flow [2024-10-31 21:56:32,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2340, PETRI_PLACES=129, PETRI_TRANSITIONS=177} [2024-10-31 21:56:32,903 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 103 predicate places. [2024-10-31 21:56:32,903 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 177 transitions, 2340 flow [2024-10-31 21:56:32,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 21:56:32,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:32,904 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:32,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 21:56:33,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 21:56:33,113 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 21:56:33,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:33,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2030137314, now seen corresponding path program 4 times [2024-10-31 21:56:33,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:33,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339299066] [2024-10-31 21:56:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:33,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:33,270 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 21:56:33,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:33,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339299066] [2024-10-31 21:56:33,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339299066] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:33,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417760827] [2024-10-31 21:56:33,272 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 21:56:33,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:33,274 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:33,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 21:56:33,373 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 21:56:33,374 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:56:33,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:56:33,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:33,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:33,518 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 21:56:33,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417760827] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:33,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:33,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-31 21:56:33,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040714564] [2024-10-31 21:56:33,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:33,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 21:56:33,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:33,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 21:56:33,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:56:33,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-31 21:56:33,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 177 transitions, 2340 flow. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 21:56:33,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:33,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-31 21:56:33,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:34,672 INFO L124 PetriNetUnfolderBase]: 1813/2993 cut-off events. [2024-10-31 21:56:34,673 INFO L125 PetriNetUnfolderBase]: For 44656/44656 co-relation queries the response was YES. [2024-10-31 21:56:34,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19712 conditions, 2993 events. 1813/2993 cut-off events. For 44656/44656 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15431 event pairs, 155 based on Foata normal form. 18/3011 useless extension candidates. Maximal degree in co-relation 17594. Up to 628 conditions per place. [2024-10-31 21:56:34,729 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 182 selfloop transitions, 116 changer transitions 3/302 dead transitions. [2024-10-31 21:56:34,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 302 transitions, 4411 flow [2024-10-31 21:56:34,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 21:56:34,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-31 21:56:34,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 186 transitions. [2024-10-31 21:56:34,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2024-10-31 21:56:34,731 INFO L175 Difference]: Start difference. First operand has 129 places, 177 transitions, 2340 flow. Second operand 17 states and 186 transitions. [2024-10-31 21:56:34,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 302 transitions, 4411 flow [2024-10-31 21:56:34,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 302 transitions, 4219 flow, removed 55 selfloop flow, removed 1 redundant places. [2024-10-31 21:56:34,939 INFO L231 Difference]: Finished difference. Result has 148 places, 215 transitions, 3150 flow [2024-10-31 21:56:34,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3150, PETRI_PLACES=148, PETRI_TRANSITIONS=215} [2024-10-31 21:56:34,941 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 122 predicate places. [2024-10-31 21:56:34,941 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 215 transitions, 3150 flow [2024-10-31 21:56:34,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 21:56:34,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:34,941 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:34,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-31 21:56:35,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:35,146 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 21:56:35,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:35,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1385965072, now seen corresponding path program 5 times [2024-10-31 21:56:35,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:35,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434251522] [2024-10-31 21:56:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:35,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,255 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 21:56:35,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:35,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434251522] [2024-10-31 21:56:35,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434251522] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:35,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038714789] [2024-10-31 21:56:35,256 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 21:56:35,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:35,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:35,259 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:35,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 21:56:35,322 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-31 21:56:35,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:56:35,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:56:35,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:35,415 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 21:56:35,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:35,478 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 21:56:35,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038714789] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:35,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:35,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-31 21:56:35,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184194272] [2024-10-31 21:56:35,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:35,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 21:56:35,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:35,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 21:56:35,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-31 21:56:35,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-31 21:56:35,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 215 transitions, 3150 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:35,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:35,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-31 21:56:35,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:36,894 INFO L124 PetriNetUnfolderBase]: 2311/3823 cut-off events. [2024-10-31 21:56:36,894 INFO L125 PetriNetUnfolderBase]: For 73765/73765 co-relation queries the response was YES. [2024-10-31 21:56:36,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26696 conditions, 3823 events. 2311/3823 cut-off events. For 73765/73765 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20725 event pairs, 86 based on Foata normal form. 71/3894 useless extension candidates. Maximal degree in co-relation 23762. Up to 1204 conditions per place. [2024-10-31 21:56:37,037 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 170 selfloop transitions, 197 changer transitions 2/370 dead transitions. [2024-10-31 21:56:37,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 370 transitions, 5641 flow [2024-10-31 21:56:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 21:56:37,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-31 21:56:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 180 transitions. [2024-10-31 21:56:37,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-10-31 21:56:37,040 INFO L175 Difference]: Start difference. First operand has 148 places, 215 transitions, 3150 flow. Second operand 16 states and 180 transitions. [2024-10-31 21:56:37,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 370 transitions, 5641 flow [2024-10-31 21:56:37,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 370 transitions, 5226 flow, removed 193 selfloop flow, removed 3 redundant places. [2024-10-31 21:56:37,459 INFO L231 Difference]: Finished difference. Result has 169 places, 276 transitions, 4477 flow [2024-10-31 21:56:37,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4477, PETRI_PLACES=169, PETRI_TRANSITIONS=276} [2024-10-31 21:56:37,462 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 143 predicate places. [2024-10-31 21:56:37,462 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 276 transitions, 4477 flow [2024-10-31 21:56:37,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:37,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:37,463 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:37,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-31 21:56:37,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:37,665 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 21:56:37,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:37,665 INFO L85 PathProgramCache]: Analyzing trace with hash -511635788, now seen corresponding path program 6 times [2024-10-31 21:56:37,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:37,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536578423] [2024-10-31 21:56:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:37,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:37,765 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 21:56:37,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:37,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536578423] [2024-10-31 21:56:37,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536578423] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:37,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677531666] [2024-10-31 21:56:37,766 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-31 21:56:37,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:37,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:37,768 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:37,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 21:56:37,836 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-31 21:56:37,836 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:56:37,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:56:37,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:37,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:37,972 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 21:56:37,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677531666] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:37,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:37,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-31 21:56:37,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524750619] [2024-10-31 21:56:37,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:37,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 21:56:37,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:37,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 21:56:37,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:56:37,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-31 21:56:37,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 276 transitions, 4477 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 21:56:37,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:37,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-31 21:56:37,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:39,660 INFO L124 PetriNetUnfolderBase]: 2658/4390 cut-off events. [2024-10-31 21:56:39,661 INFO L125 PetriNetUnfolderBase]: For 90766/90766 co-relation queries the response was YES. [2024-10-31 21:56:39,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31819 conditions, 4390 events. 2658/4390 cut-off events. For 90766/90766 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 24453 event pairs, 102 based on Foata normal form. 46/4436 useless extension candidates. Maximal degree in co-relation 31007. Up to 871 conditions per place. [2024-10-31 21:56:39,709 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 195 selfloop transitions, 252 changer transitions 2/450 dead transitions. [2024-10-31 21:56:39,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 450 transitions, 7383 flow [2024-10-31 21:56:39,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-31 21:56:39,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-31 21:56:39,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 281 transitions. [2024-10-31 21:56:39,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45032051282051283 [2024-10-31 21:56:39,714 INFO L175 Difference]: Start difference. First operand has 169 places, 276 transitions, 4477 flow. Second operand 26 states and 281 transitions. [2024-10-31 21:56:39,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 450 transitions, 7383 flow [2024-10-31 21:56:40,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 450 transitions, 7288 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-10-31 21:56:40,334 INFO L231 Difference]: Finished difference. Result has 204 places, 322 transitions, 6175 flow [2024-10-31 21:56:40,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6175, PETRI_PLACES=204, PETRI_TRANSITIONS=322} [2024-10-31 21:56:40,336 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 178 predicate places. [2024-10-31 21:56:40,336 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 322 transitions, 6175 flow [2024-10-31 21:56:40,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 21:56:40,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:40,337 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:40,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-31 21:56:40,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:40,538 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 21:56:40,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:40,538 INFO L85 PathProgramCache]: Analyzing trace with hash 564075368, now seen corresponding path program 7 times [2024-10-31 21:56:40,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:40,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255582500] [2024-10-31 21:56:40,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:40,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:40,640 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 21:56:40,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:40,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255582500] [2024-10-31 21:56:40,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255582500] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:40,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861384603] [2024-10-31 21:56:40,641 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-31 21:56:40,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:40,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:40,643 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:40,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 21:56:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:40,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:56:40,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:40,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:40,844 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 21:56:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861384603] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:40,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:40,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-31 21:56:40,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661983536] [2024-10-31 21:56:40,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:40,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 21:56:40,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:40,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 21:56:40,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:56:40,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-31 21:56:40,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 322 transitions, 6175 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 21:56:40,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:40,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-31 21:56:40,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:42,355 INFO L124 PetriNetUnfolderBase]: 2664/4412 cut-off events. [2024-10-31 21:56:42,355 INFO L125 PetriNetUnfolderBase]: For 130009/130009 co-relation queries the response was YES. [2024-10-31 21:56:42,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35788 conditions, 4412 events. 2664/4412 cut-off events. For 130009/130009 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 24958 event pairs, 334 based on Foata normal form. 8/4420 useless extension candidates. Maximal degree in co-relation 34854. Up to 1052 conditions per place. [2024-10-31 21:56:42,421 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 234 selfloop transitions, 163 changer transitions 4/402 dead transitions. [2024-10-31 21:56:42,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 402 transitions, 7922 flow [2024-10-31 21:56:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 21:56:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-31 21:56:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-10-31 21:56:42,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-10-31 21:56:42,426 INFO L175 Difference]: Start difference. First operand has 204 places, 322 transitions, 6175 flow. Second operand 13 states and 154 transitions. [2024-10-31 21:56:42,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 402 transitions, 7922 flow [2024-10-31 21:56:43,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 402 transitions, 7475 flow, removed 116 selfloop flow, removed 14 redundant places. [2024-10-31 21:56:43,211 INFO L231 Difference]: Finished difference. Result has 202 places, 320 transitions, 6069 flow [2024-10-31 21:56:43,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5714, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6069, PETRI_PLACES=202, PETRI_TRANSITIONS=320} [2024-10-31 21:56:43,212 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 176 predicate places. [2024-10-31 21:56:43,212 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 320 transitions, 6069 flow [2024-10-31 21:56:43,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 21:56:43,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:43,213 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:43,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-31 21:56:43,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-31 21:56:43,413 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 21:56:43,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:43,414 INFO L85 PathProgramCache]: Analyzing trace with hash -822306354, now seen corresponding path program 8 times [2024-10-31 21:56:43,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:43,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880967462] [2024-10-31 21:56:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:43,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:43,490 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 21:56:43,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:43,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880967462] [2024-10-31 21:56:43,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880967462] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:43,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104964673] [2024-10-31 21:56:43,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:56:43,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:43,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:43,493 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:43,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-31 21:56:43,552 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:56:43,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:56:43,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:56:43,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:43,639 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 21:56:43,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:43,692 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 21:56:43,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104964673] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:43,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:43,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-31 21:56:43,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761765173] [2024-10-31 21:56:43,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:43,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 21:56:43,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:43,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 21:56:43,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-31 21:56:43,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-31 21:56:43,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 320 transitions, 6069 flow. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 21:56:43,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:43,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-31 21:56:43,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:45,200 INFO L124 PetriNetUnfolderBase]: 2908/4796 cut-off events. [2024-10-31 21:56:45,200 INFO L125 PetriNetUnfolderBase]: For 152503/152503 co-relation queries the response was YES. [2024-10-31 21:56:45,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39790 conditions, 4796 events. 2908/4796 cut-off events. For 152503/152503 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 26979 event pairs, 169 based on Foata normal form. 54/4850 useless extension candidates. Maximal degree in co-relation 37853. Up to 931 conditions per place. [2024-10-31 21:56:45,261 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 172 selfloop transitions, 310 changer transitions 6/489 dead transitions. [2024-10-31 21:56:45,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 489 transitions, 9318 flow [2024-10-31 21:56:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-31 21:56:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-31 21:56:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 270 transitions. [2024-10-31 21:56:45,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-10-31 21:56:45,266 INFO L175 Difference]: Start difference. First operand has 202 places, 320 transitions, 6069 flow. Second operand 26 states and 270 transitions. [2024-10-31 21:56:45,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 489 transitions, 9318 flow [2024-10-31 21:56:46,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 489 transitions, 8939 flow, removed 26 selfloop flow, removed 12 redundant places. [2024-10-31 21:56:46,237 INFO L231 Difference]: Finished difference. Result has 220 places, 380 transitions, 8019 flow [2024-10-31 21:56:46,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5705, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8019, PETRI_PLACES=220, PETRI_TRANSITIONS=380} [2024-10-31 21:56:46,239 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 194 predicate places. [2024-10-31 21:56:46,239 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 380 transitions, 8019 flow [2024-10-31 21:56:46,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 21:56:46,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:46,239 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:46,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-31 21:56:46,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-31 21:56:46,444 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 21:56:46,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash -281848868, now seen corresponding path program 9 times [2024-10-31 21:56:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:46,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409775124] [2024-10-31 21:56:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:46,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:46,522 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 21:56:46,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:46,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409775124] [2024-10-31 21:56:46,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409775124] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:46,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341737702] [2024-10-31 21:56:46,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 21:56:46,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:46,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:46,525 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:46,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-31 21:56:46,583 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-31 21:56:46,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:56:46,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:56:46,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:46,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:46,746 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 21:56:46,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341737702] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:46,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:46,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-31 21:56:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673905154] [2024-10-31 21:56:46,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:46,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 21:56:46,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 21:56:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:56:46,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-31 21:56:46,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 380 transitions, 8019 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 21:56:46,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:46,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-31 21:56:46,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:49,130 INFO L124 PetriNetUnfolderBase]: 3264/5430 cut-off events. [2024-10-31 21:56:49,130 INFO L125 PetriNetUnfolderBase]: For 195777/195777 co-relation queries the response was YES. [2024-10-31 21:56:49,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47741 conditions, 5430 events. 3264/5430 cut-off events. For 195777/195777 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 31826 event pairs, 157 based on Foata normal form. 30/5460 useless extension candidates. Maximal degree in co-relation 45020. Up to 1116 conditions per place. [2024-10-31 21:56:49,196 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 240 selfloop transitions, 330 changer transitions 6/577 dead transitions. [2024-10-31 21:56:49,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 577 transitions, 12021 flow [2024-10-31 21:56:49,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-31 21:56:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-10-31 21:56:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 304 transitions. [2024-10-31 21:56:49,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2024-10-31 21:56:49,198 INFO L175 Difference]: Start difference. First operand has 220 places, 380 transitions, 8019 flow. Second operand 29 states and 304 transitions. [2024-10-31 21:56:49,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 577 transitions, 12021 flow [2024-10-31 21:56:50,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 577 transitions, 11533 flow, removed 114 selfloop flow, removed 14 redundant places. [2024-10-31 21:56:50,701 INFO L231 Difference]: Finished difference. Result has 239 places, 429 transitions, 9703 flow [2024-10-31 21:56:50,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7588, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9703, PETRI_PLACES=239, PETRI_TRANSITIONS=429} [2024-10-31 21:56:50,701 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 213 predicate places. [2024-10-31 21:56:50,702 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 429 transitions, 9703 flow [2024-10-31 21:56:50,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 21:56:50,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:56:50,702 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:50,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-31 21:56:50,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-31 21:56:50,903 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 21:56:50,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:50,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1052008316, now seen corresponding path program 10 times [2024-10-31 21:56:50,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:50,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774744657] [2024-10-31 21:56:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:50,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,977 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 21:56:50,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774744657] [2024-10-31 21:56:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774744657] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287165392] [2024-10-31 21:56:50,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 21:56:50,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:50,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:50,980 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:50,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c7917c-dfa6-4212-8c52-5a334a051a23/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-31 21:56:51,038 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 21:56:51,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:56:51,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:56:51,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:51,118 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 21:56:51,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:51,180 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 21:56:51,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287165392] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:51,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:51,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-31 21:56:51,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521847508] [2024-10-31 21:56:51,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:51,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 21:56:51,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:51,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 21:56:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:56:51,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-31 21:56:51,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 429 transitions, 9703 flow. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 21:56:51,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:56:51,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-31 21:56:51,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:56:53,976 INFO L124 PetriNetUnfolderBase]: 3694/6123 cut-off events. [2024-10-31 21:56:53,976 INFO L125 PetriNetUnfolderBase]: For 262108/262108 co-relation queries the response was YES. [2024-10-31 21:56:54,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55729 conditions, 6123 events. 3694/6123 cut-off events. For 262108/262108 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 36600 event pairs, 1307 based on Foata normal form. 18/6141 useless extension candidates. Maximal degree in co-relation 53471. Up to 4660 conditions per place. [2024-10-31 21:56:54,050 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 471 selfloop transitions, 72 changer transitions 2/546 dead transitions. [2024-10-31 21:56:54,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 546 transitions, 12514 flow [2024-10-31 21:56:54,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 21:56:54,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-31 21:56:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 173 transitions. [2024-10-31 21:56:54,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-10-31 21:56:54,052 INFO L175 Difference]: Start difference. First operand has 239 places, 429 transitions, 9703 flow. Second operand 16 states and 173 transitions. [2024-10-31 21:56:54,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 546 transitions, 12514 flow