./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya --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 6b30bad195dde021066febd52c7985271e0448c265b66e6efcbd9c3306420e73 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:32:04,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:32:04,434 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 03:32:04,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:32:04,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:32:04,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:32:04,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:32:04,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:32:04,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:32:04,462 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:32:04,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:32:04,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:32:04,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:32:04,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:32:04,465 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:32:04,465 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:32:04,466 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:32:04,466 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:32:04,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:32:04,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:32:04,468 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 03:32:04,469 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 03:32:04,469 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 03:32:04,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:32:04,470 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 03:32:04,470 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:32:04,471 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:32:04,471 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:32:04,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:32:04,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:32:04,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:32:04,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:32:04,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:32:04,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:32:04,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:32:04,474 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:32:04,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:32:04,474 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:32:04,474 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:32:04,474 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:32:04,475 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:32:04,475 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_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b30bad195dde021066febd52c7985271e0448c265b66e6efcbd9c3306420e73 [2023-11-29 03:32:04,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:32:04,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:32:04,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:32:04,704 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:32:04,704 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:32:04,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-11-29 03:32:07,494 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:32:07,661 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:32:07,662 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-11-29 03:32:07,669 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/data/31df5b433/81836730b31c41fab535fa4bea2e844b/FLAGa008343a7 [2023-11-29 03:32:07,682 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/data/31df5b433/81836730b31c41fab535fa4bea2e844b [2023-11-29 03:32:07,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:32:07,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:32:07,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:32:07,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:32:07,692 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:32:07,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6626052b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07, skipping insertion in model container [2023-11-29 03:32:07,694 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:32:07,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:32:07,874 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:32:07,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:32:07,904 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:32:07,904 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:32:07,911 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:32:07,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07 WrapperNode [2023-11-29 03:32:07,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:32:07,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:32:07,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:32:07,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:32:07,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,947 INFO L138 Inliner]: procedures = 21, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2023-11-29 03:32:07,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:32:07,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:32:07,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:32:07,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:32:07,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,975 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 03:32:07,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:07,993 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:32:07,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:32:07,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:32:07,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:32:07,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (1/1) ... [2023-11-29 03:32:08,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:32:08,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:32:08,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:32:08,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:32:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:32:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 03:32:08,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 03:32:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 03:32:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 03:32:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:32:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:32:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:32:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:32:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:32:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:32:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:32:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 03:32:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 03:32:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:32:08,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:32:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:32:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:32:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:32:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:32:08,067 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:32:08,171 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:32:08,173 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:32:08,368 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:32:08,516 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:32:08,516 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 03:32:08,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:32:08 BoogieIcfgContainer [2023-11-29 03:32:08,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:32:08,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:32:08,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:32:08,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:32:08,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:32:07" (1/3) ... [2023-11-29 03:32:08,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298f2b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:32:08, skipping insertion in model container [2023-11-29 03:32:08,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:32:07" (2/3) ... [2023-11-29 03:32:08,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298f2b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:32:08, skipping insertion in model container [2023-11-29 03:32:08,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:32:08" (3/3) ... [2023-11-29 03:32:08,526 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2023-11-29 03:32:08,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:32:08,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-29 03:32:08,542 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:32:08,583 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 03:32:08,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 40 transitions, 94 flow [2023-11-29 03:32:08,646 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2023-11-29 03:32:08,647 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 03:32:08,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 2/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-11-29 03:32:08,650 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 40 transitions, 94 flow [2023-11-29 03:32:08,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 37 transitions, 86 flow [2023-11-29 03:32:08,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:32:08,672 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6b6553d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:32:08,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-29 03:32:08,675 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:32:08,675 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 03:32:08,676 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:32:08,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:32:08,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 03:32:08,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:32:08,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:32:08,682 INFO L85 PathProgramCache]: Analyzing trace with hash 9107, now seen corresponding path program 1 times [2023-11-29 03:32:08,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:32:08,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189838800] [2023-11-29 03:32:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:08,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:32:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:32:08,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:32:08,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189838800] [2023-11-29 03:32:08,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189838800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:32:08,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:32:08,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:32:08,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323077274] [2023-11-29 03:32:08,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:32:08,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:32:08,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:32:08,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:32:08,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:32:09,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 40 [2023-11-29 03:32:09,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:32:09,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 40 [2023-11-29 03:32:09,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:32:09,099 INFO L124 PetriNetUnfolderBase]: 65/175 cut-off events. [2023-11-29 03:32:09,099 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-29 03:32:09,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 175 events. 65/175 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 807 event pairs, 47 based on Foata normal form. 1/148 useless extension candidates. Maximal degree in co-relation 246. Up to 111 conditions per place. [2023-11-29 03:32:09,104 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 14 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-29 03:32:09,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 108 flow [2023-11-29 03:32:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:32:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:32:09,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2023-11-29 03:32:09,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2023-11-29 03:32:09,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2023-11-29 03:32:09,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2023-11-29 03:32:09,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:32:09,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2023-11-29 03:32:09,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,133 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 86 flow. Second operand 3 states and 81 transitions. [2023-11-29 03:32:09,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 108 flow [2023-11-29 03:32:09,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 100 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:32:09,138 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 72 flow [2023-11-29 03:32:09,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-11-29 03:32:09,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2023-11-29 03:32:09,142 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 72 flow [2023-11-29 03:32:09,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:32:09,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 03:32:09,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:32:09,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:32:09,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:32:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash 9108, now seen corresponding path program 1 times [2023-11-29 03:32:09,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:32:09,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282769337] [2023-11-29 03:32:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:09,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:32:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:32:09,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:32:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282769337] [2023-11-29 03:32:09,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282769337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:32:09,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:32:09,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:32:09,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325510665] [2023-11-29 03:32:09,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:32:09,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:32:09,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:32:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:32:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:32:09,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 40 [2023-11-29 03:32:09,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:32:09,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 40 [2023-11-29 03:32:09,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:32:09,387 INFO L124 PetriNetUnfolderBase]: 42/131 cut-off events. [2023-11-29 03:32:09,388 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 03:32:09,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 131 events. 42/131 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 554 event pairs, 30 based on Foata normal form. 13/123 useless extension candidates. Maximal degree in co-relation 208. Up to 75 conditions per place. [2023-11-29 03:32:09,390 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 12 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-29 03:32:09,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 94 flow [2023-11-29 03:32:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:32:09,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:32:09,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2023-11-29 03:32:09,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-29 03:32:09,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2023-11-29 03:32:09,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2023-11-29 03:32:09,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:32:09,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2023-11-29 03:32:09,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,396 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 72 flow. Second operand 3 states and 84 transitions. [2023-11-29 03:32:09,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 94 flow [2023-11-29 03:32:09,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:32:09,398 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 69 flow [2023-11-29 03:32:09,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-11-29 03:32:09,399 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2023-11-29 03:32:09,399 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 69 flow [2023-11-29 03:32:09,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:32:09,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 03:32:09,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:32:09,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:32:09,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:32:09,401 INFO L85 PathProgramCache]: Analyzing trace with hash 271548632, now seen corresponding path program 1 times [2023-11-29 03:32:09,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:32:09,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991263166] [2023-11-29 03:32:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:09,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:32:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:32:09,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:32:09,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991263166] [2023-11-29 03:32:09,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991263166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:32:09,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:32:09,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:32:09,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828195410] [2023-11-29 03:32:09,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:32:09,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:32:09,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:32:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:32:09,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:32:09,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 40 [2023-11-29 03:32:09,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:32:09,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 40 [2023-11-29 03:32:09,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:32:09,532 INFO L124 PetriNetUnfolderBase]: 49/135 cut-off events. [2023-11-29 03:32:09,532 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 03:32:09,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 135 events. 49/135 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 563 event pairs, 35 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 226. Up to 89 conditions per place. [2023-11-29 03:32:09,534 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 14 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-29 03:32:09,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 95 flow [2023-11-29 03:32:09,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:32:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:32:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2023-11-29 03:32:09,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 03:32:09,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2023-11-29 03:32:09,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2023-11-29 03:32:09,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:32:09,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2023-11-29 03:32:09,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,539 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,540 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 69 flow. Second operand 3 states and 80 transitions. [2023-11-29 03:32:09,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 95 flow [2023-11-29 03:32:09,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:32:09,541 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 66 flow [2023-11-29 03:32:09,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-11-29 03:32:09,543 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-11-29 03:32:09,543 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 66 flow [2023-11-29 03:32:09,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:32:09,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 03:32:09,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:32:09,544 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:32:09,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:32:09,545 INFO L85 PathProgramCache]: Analyzing trace with hash 271548633, now seen corresponding path program 1 times [2023-11-29 03:32:09,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:32:09,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40548396] [2023-11-29 03:32:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:09,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:32:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:32:09,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:32:09,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40548396] [2023-11-29 03:32:09,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40548396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:32:09,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:32:09,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:32:09,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612311053] [2023-11-29 03:32:09,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:32:09,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:32:09,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:32:09,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:32:09,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:32:09,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 40 [2023-11-29 03:32:09,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:32:09,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 40 [2023-11-29 03:32:09,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:32:09,694 INFO L124 PetriNetUnfolderBase]: 42/119 cut-off events. [2023-11-29 03:32:09,694 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 03:32:09,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 119 events. 42/119 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 467 event pairs, 30 based on Foata normal form. 6/116 useless extension candidates. Maximal degree in co-relation 196. Up to 75 conditions per place. [2023-11-29 03:32:09,695 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 12 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-11-29 03:32:09,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 88 flow [2023-11-29 03:32:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:32:09,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:32:09,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2023-11-29 03:32:09,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-29 03:32:09,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2023-11-29 03:32:09,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2023-11-29 03:32:09,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:32:09,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2023-11-29 03:32:09,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,700 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 66 flow. Second operand 3 states and 84 transitions. [2023-11-29 03:32:09,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 88 flow [2023-11-29 03:32:09,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 27 transitions, 87 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:32:09,702 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 63 flow [2023-11-29 03:32:09,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-11-29 03:32:09,703 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-11-29 03:32:09,703 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 63 flow [2023-11-29 03:32:09,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:32:09,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:32:09,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:32:09,704 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:32:09,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:32:09,705 INFO L85 PathProgramCache]: Analyzing trace with hash -411175024, now seen corresponding path program 1 times [2023-11-29 03:32:09,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:32:09,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002536615] [2023-11-29 03:32:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:09,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:32:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:32:09,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:32:09,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002536615] [2023-11-29 03:32:09,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002536615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:32:09,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:32:09,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:32:09,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997690128] [2023-11-29 03:32:09,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:32:09,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:32:09,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:32:09,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:32:09,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:32:09,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 40 [2023-11-29 03:32:09,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:09,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:32:09,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 40 [2023-11-29 03:32:09,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:32:10,049 INFO L124 PetriNetUnfolderBase]: 91/195 cut-off events. [2023-11-29 03:32:10,049 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 03:32:10,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 195 events. 91/195 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 702 event pairs, 20 based on Foata normal form. 14/203 useless extension candidates. Maximal degree in co-relation 354. Up to 77 conditions per place. [2023-11-29 03:32:10,052 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 5 changer transitions 2/46 dead transitions. [2023-11-29 03:32:10,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 170 flow [2023-11-29 03:32:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:32:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:32:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2023-11-29 03:32:10,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.755 [2023-11-29 03:32:10,054 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 151 transitions. [2023-11-29 03:32:10,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 151 transitions. [2023-11-29 03:32:10,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:32:10,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 151 transitions. [2023-11-29 03:32:10,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:10,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:10,058 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:10,058 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 63 flow. Second operand 5 states and 151 transitions. [2023-11-29 03:32:10,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 170 flow [2023-11-29 03:32:10,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:32:10,060 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 99 flow [2023-11-29 03:32:10,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-11-29 03:32:10,062 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-11-29 03:32:10,062 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 99 flow [2023-11-29 03:32:10,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:10,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:32:10,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:32:10,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:32:10,063 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:32:10,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:32:10,064 INFO L85 PathProgramCache]: Analyzing trace with hash 473600355, now seen corresponding path program 1 times [2023-11-29 03:32:10,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:32:10,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701392203] [2023-11-29 03:32:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:10,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:32:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:11,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:32:11,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:32:11,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701392203] [2023-11-29 03:32:11,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701392203] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:32:11,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870114797] [2023-11-29 03:32:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:11,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:32:11,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:32:11,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:32:11,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:32:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:11,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 03:32:11,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:32:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:32:12,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:32:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:32:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870114797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:32:12,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:32:12,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2023-11-29 03:32:12,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80972188] [2023-11-29 03:32:12,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:32:12,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:32:12,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:32:12,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:32:12,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:32:12,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 40 [2023-11-29 03:32:12,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 99 flow. Second operand has 20 states, 20 states have (on average 21.2) internal successors, (424), 20 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:12,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:32:12,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 40 [2023-11-29 03:32:12,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:32:21,886 INFO L124 PetriNetUnfolderBase]: 891/1549 cut-off events. [2023-11-29 03:32:21,886 INFO L125 PetriNetUnfolderBase]: For 451/456 co-relation queries the response was YES. [2023-11-29 03:32:21,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 1549 events. 891/1549 cut-off events. For 451/456 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7679 event pairs, 23 based on Foata normal form. 6/1442 useless extension candidates. Maximal degree in co-relation 3656. Up to 276 conditions per place. [2023-11-29 03:32:21,896 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 158 selfloop transitions, 96 changer transitions 46/308 dead transitions. [2023-11-29 03:32:21,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 308 transitions, 1497 flow [2023-11-29 03:32:21,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 03:32:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-29 03:32:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1188 transitions. [2023-11-29 03:32:21,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6319148936170212 [2023-11-29 03:32:21,902 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 1188 transitions. [2023-11-29 03:32:21,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 1188 transitions. [2023-11-29 03:32:21,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:32:21,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 1188 transitions. [2023-11-29 03:32:21,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 25.27659574468085) internal successors, (1188), 47 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:21,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 40.0) internal successors, (1920), 48 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:21,914 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 40.0) internal successors, (1920), 48 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:21,914 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 99 flow. Second operand 47 states and 1188 transitions. [2023-11-29 03:32:21,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 308 transitions, 1497 flow [2023-11-29 03:32:21,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 308 transitions, 1487 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:32:21,922 INFO L231 Difference]: Finished difference. Result has 116 places, 133 transitions, 861 flow [2023-11-29 03:32:21,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=861, PETRI_PLACES=116, PETRI_TRANSITIONS=133} [2023-11-29 03:32:21,923 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places. [2023-11-29 03:32:21,924 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 133 transitions, 861 flow [2023-11-29 03:32:21,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 21.2) internal successors, (424), 20 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:21,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:32:21,924 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:32:21,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:32:22,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:32:22,127 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:32:22,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:32:22,128 INFO L85 PathProgramCache]: Analyzing trace with hash 689884956, now seen corresponding path program 2 times [2023-11-29 03:32:22,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:32:22,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996371390] [2023-11-29 03:32:22,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:22,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:32:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:32:22,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:32:22,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996371390] [2023-11-29 03:32:22,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996371390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:32:22,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:32:22,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:32:22,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587677296] [2023-11-29 03:32:22,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:32:22,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:32:22,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:32:22,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:32:22,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:32:22,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 40 [2023-11-29 03:32:22,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 133 transitions, 861 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:22,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:32:22,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 40 [2023-11-29 03:32:22,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:32:22,736 INFO L124 PetriNetUnfolderBase]: 791/1420 cut-off events. [2023-11-29 03:32:22,736 INFO L125 PetriNetUnfolderBase]: For 13060/13189 co-relation queries the response was YES. [2023-11-29 03:32:22,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6416 conditions, 1420 events. 791/1420 cut-off events. For 13060/13189 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7083 event pairs, 0 based on Foata normal form. 44/1463 useless extension candidates. Maximal degree in co-relation 6370. Up to 367 conditions per place. [2023-11-29 03:32:22,751 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 169 selfloop transitions, 63 changer transitions 0/247 dead transitions. [2023-11-29 03:32:22,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 247 transitions, 2157 flow [2023-11-29 03:32:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:32:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 03:32:22,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2023-11-29 03:32:22,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6611111111111111 [2023-11-29 03:32:22,754 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 238 transitions. [2023-11-29 03:32:22,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 238 transitions. [2023-11-29 03:32:22,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:32:22,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 238 transitions. [2023-11-29 03:32:22,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:22,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:22,757 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:22,757 INFO L175 Difference]: Start difference. First operand has 116 places, 133 transitions, 861 flow. Second operand 9 states and 238 transitions. [2023-11-29 03:32:22,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 247 transitions, 2157 flow [2023-11-29 03:32:22,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 247 transitions, 2043 flow, removed 52 selfloop flow, removed 7 redundant places. [2023-11-29 03:32:22,804 INFO L231 Difference]: Finished difference. Result has 117 places, 164 transitions, 1322 flow [2023-11-29 03:32:22,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1322, PETRI_PLACES=117, PETRI_TRANSITIONS=164} [2023-11-29 03:32:22,805 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2023-11-29 03:32:22,805 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 164 transitions, 1322 flow [2023-11-29 03:32:22,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:22,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:32:22,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:32:22,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:32:22,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:32:22,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:32:22,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1485081947, now seen corresponding path program 1 times [2023-11-29 03:32:22,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:32:22,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358136536] [2023-11-29 03:32:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:22,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:32:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:32:24,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:32:24,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358136536] [2023-11-29 03:32:24,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358136536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:32:24,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052227760] [2023-11-29 03:32:24,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:24,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:32:24,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:32:24,177 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:32:24,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:32:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:24,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:32:24,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:32:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:32:29,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:32:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:32:31,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052227760] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:32:31,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:32:31,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-11-29 03:32:31,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430580472] [2023-11-29 03:32:31,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:32:31,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:32:31,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:32:31,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:32:31,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=409, Unknown=1, NotChecked=0, Total=506 [2023-11-29 03:32:31,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 40 [2023-11-29 03:32:31,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 164 transitions, 1322 flow. Second operand has 23 states, 23 states have (on average 21.52173913043478) internal successors, (495), 23 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:32:31,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:32:31,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 40 [2023-11-29 03:32:31,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:32:41,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:33:00,379 INFO L124 PetriNetUnfolderBase]: 2445/4291 cut-off events. [2023-11-29 03:33:00,379 INFO L125 PetriNetUnfolderBase]: For 44860/44860 co-relation queries the response was YES. [2023-11-29 03:33:00,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21623 conditions, 4291 events. 2445/4291 cut-off events. For 44860/44860 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 25875 event pairs, 19 based on Foata normal form. 10/4300 useless extension candidates. Maximal degree in co-relation 21577. Up to 1115 conditions per place. [2023-11-29 03:33:00,420 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 353 selfloop transitions, 284 changer transitions 87/732 dead transitions. [2023-11-29 03:33:00,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 732 transitions, 7963 flow [2023-11-29 03:33:00,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-11-29 03:33:00,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-11-29 03:33:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 1860 transitions. [2023-11-29 03:33:00,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2023-11-29 03:33:00,429 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 1860 transitions. [2023-11-29 03:33:00,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 1860 transitions. [2023-11-29 03:33:00,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:33:00,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 1860 transitions. [2023-11-29 03:33:00,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 24.473684210526315) internal successors, (1860), 76 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:33:00,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 40.0) internal successors, (3080), 77 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:33:00,446 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 40.0) internal successors, (3080), 77 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:33:00,447 INFO L175 Difference]: Start difference. First operand has 117 places, 164 transitions, 1322 flow. Second operand 76 states and 1860 transitions. [2023-11-29 03:33:00,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 732 transitions, 7963 flow [2023-11-29 03:33:00,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 732 transitions, 7775 flow, removed 91 selfloop flow, removed 2 redundant places. [2023-11-29 03:33:00,600 INFO L231 Difference]: Finished difference. Result has 230 places, 427 transitions, 5170 flow [2023-11-29 03:33:00,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=5170, PETRI_PLACES=230, PETRI_TRANSITIONS=427} [2023-11-29 03:33:00,601 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 188 predicate places. [2023-11-29 03:33:00,601 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 427 transitions, 5170 flow [2023-11-29 03:33:00,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 21.52173913043478) internal successors, (495), 23 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:33:00,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:33:00,601 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:33:00,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:33:00,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:33:00,802 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:33:00,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:33:00,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1098671535, now seen corresponding path program 2 times [2023-11-29 03:33:00,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:33:00,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101432560] [2023-11-29 03:33:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:33:00,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:33:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:33:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:33:02,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:33:02,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101432560] [2023-11-29 03:33:02,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101432560] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:33:02,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212492105] [2023-11-29 03:33:02,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:33:02,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:33:02,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:33:02,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:33:02,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:33:02,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:33:02,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:33:02,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:33:02,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:33:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:33:02,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:33:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:33:05,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212492105] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:33:05,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:33:05,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2023-11-29 03:33:05,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001480103] [2023-11-29 03:33:05,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:33:05,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 03:33:05,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:33:05,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 03:33:05,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:33:06,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 40 [2023-11-29 03:33:06,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 427 transitions, 5170 flow. Second operand has 24 states, 24 states have (on average 22.291666666666668) internal successors, (535), 24 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:33:06,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:33:06,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 40 [2023-11-29 03:33:06,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:33:28,867 INFO L124 PetriNetUnfolderBase]: 2983/5535 cut-off events. [2023-11-29 03:33:28,867 INFO L125 PetriNetUnfolderBase]: For 110974/111002 co-relation queries the response was YES. [2023-11-29 03:33:28,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36753 conditions, 5535 events. 2983/5535 cut-off events. For 110974/111002 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 37334 event pairs, 44 based on Foata normal form. 43/5577 useless extension candidates. Maximal degree in co-relation 36667. Up to 1485 conditions per place. [2023-11-29 03:33:28,954 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 480 selfloop transitions, 350 changer transitions 97/938 dead transitions. [2023-11-29 03:33:28,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 938 transitions, 13336 flow [2023-11-29 03:33:28,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 03:33:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-29 03:33:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1256 transitions. [2023-11-29 03:33:28,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6541666666666667 [2023-11-29 03:33:28,957 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 1256 transitions. [2023-11-29 03:33:28,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 1256 transitions. [2023-11-29 03:33:28,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:33:28,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 1256 transitions. [2023-11-29 03:33:28,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 26.166666666666668) internal successors, (1256), 48 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:33:28,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 40.0) internal successors, (1960), 49 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:33:28,964 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 40.0) internal successors, (1960), 49 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:33:28,964 INFO L175 Difference]: Start difference. First operand has 230 places, 427 transitions, 5170 flow. Second operand 48 states and 1256 transitions. [2023-11-29 03:33:28,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 938 transitions, 13336 flow [2023-11-29 03:33:29,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 938 transitions, 12010 flow, removed 644 selfloop flow, removed 22 redundant places. [2023-11-29 03:33:29,543 INFO L231 Difference]: Finished difference. Result has 261 places, 611 transitions, 8202 flow [2023-11-29 03:33:29,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4498, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=8202, PETRI_PLACES=261, PETRI_TRANSITIONS=611} [2023-11-29 03:33:29,544 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2023-11-29 03:33:29,545 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 611 transitions, 8202 flow [2023-11-29 03:33:29,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 22.291666666666668) internal successors, (535), 24 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:33:29,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:33:29,545 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:33:29,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 03:33:29,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 03:33:29,746 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:33:29,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:33:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash -13419531, now seen corresponding path program 3 times [2023-11-29 03:33:29,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:33:29,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818428675] [2023-11-29 03:33:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:33:29,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:33:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:33:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:33:30,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:33:30,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818428675] [2023-11-29 03:33:30,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818428675] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:33:30,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693732560] [2023-11-29 03:33:30,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:33:30,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:33:30,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:33:30,795 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:33:30,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:33:30,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 03:33:30,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:33:30,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 03:33:30,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:33:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:33:32,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:33:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:33:34,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693732560] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:33:34,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:33:34,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2023-11-29 03:33:34,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868190082] [2023-11-29 03:33:34,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:33:34,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 03:33:34,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:33:34,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 03:33:34,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2023-11-29 03:33:35,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2023-11-29 03:33:35,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 611 transitions, 8202 flow. Second operand has 30 states, 30 states have (on average 23.8) internal successors, (714), 30 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:33:35,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:33:35,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2023-11-29 03:33:35,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:33:39,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:33:41,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:33:43,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:33:47,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:34:13,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:34:18,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:34:31,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:34:44,203 INFO L124 PetriNetUnfolderBase]: 3561/6861 cut-off events. [2023-11-29 03:34:44,203 INFO L125 PetriNetUnfolderBase]: For 118435/118651 co-relation queries the response was YES. [2023-11-29 03:34:44,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46116 conditions, 6861 events. 3561/6861 cut-off events. For 118435/118651 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 50892 event pairs, 54 based on Foata normal form. 142/6986 useless extension candidates. Maximal degree in co-relation 46027. Up to 2186 conditions per place. [2023-11-29 03:34:44,294 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 540 selfloop transitions, 462 changer transitions 102/1146 dead transitions. [2023-11-29 03:34:44,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1146 transitions, 16865 flow [2023-11-29 03:34:44,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-29 03:34:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-11-29 03:34:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 1801 transitions. [2023-11-29 03:34:44,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6821969696969697 [2023-11-29 03:34:44,299 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 1801 transitions. [2023-11-29 03:34:44,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 1801 transitions. [2023-11-29 03:34:44,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:34:44,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 1801 transitions. [2023-11-29 03:34:44,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 27.28787878787879) internal successors, (1801), 66 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:34:44,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 40.0) internal successors, (2680), 67 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:34:44,312 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 40.0) internal successors, (2680), 67 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:34:44,312 INFO L175 Difference]: Start difference. First operand has 261 places, 611 transitions, 8202 flow. Second operand 66 states and 1801 transitions. [2023-11-29 03:34:44,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1146 transitions, 16865 flow [2023-11-29 03:34:44,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1146 transitions, 16036 flow, removed 350 selfloop flow, removed 24 redundant places. [2023-11-29 03:34:44,986 INFO L231 Difference]: Finished difference. Result has 312 places, 844 transitions, 12927 flow [2023-11-29 03:34:44,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7621, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=12927, PETRI_PLACES=312, PETRI_TRANSITIONS=844} [2023-11-29 03:34:44,987 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 270 predicate places. [2023-11-29 03:34:44,988 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 844 transitions, 12927 flow [2023-11-29 03:34:44,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 23.8) internal successors, (714), 30 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:34:44,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:34:44,988 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:34:44,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 03:34:45,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 03:34:45,189 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:34:45,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:34:45,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1617217227, now seen corresponding path program 4 times [2023-11-29 03:34:45,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:34:45,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477129527] [2023-11-29 03:34:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:34:45,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:34:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:34:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:34:46,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:34:46,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477129527] [2023-11-29 03:34:46,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477129527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:34:46,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814889183] [2023-11-29 03:34:46,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:34:46,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:34:46,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:34:46,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:34:46,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:34:46,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:34:46,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:34:46,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:34:46,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:34:47,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:34:47,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:34:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:34:50,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814889183] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:34:50,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:34:50,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2023-11-29 03:34:50,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38090267] [2023-11-29 03:34:50,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:34:50,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 03:34:50,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:34:50,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 03:34:50,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:34:50,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2023-11-29 03:34:50,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 844 transitions, 12927 flow. Second operand has 25 states, 25 states have (on average 24.28) internal successors, (607), 25 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:34:50,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:34:50,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2023-11-29 03:34:50,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:35:03,546 INFO L124 PetriNetUnfolderBase]: 4351/8234 cut-off events. [2023-11-29 03:35:03,546 INFO L125 PetriNetUnfolderBase]: For 137109/137347 co-relation queries the response was YES. [2023-11-29 03:35:03,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58400 conditions, 8234 events. 4351/8234 cut-off events. For 137109/137347 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 62699 event pairs, 56 based on Foata normal form. 126/8340 useless extension candidates. Maximal degree in co-relation 58301. Up to 3162 conditions per place. [2023-11-29 03:35:03,683 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 594 selfloop transitions, 569 changer transitions 55/1260 dead transitions. [2023-11-29 03:35:03,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 1260 transitions, 20993 flow [2023-11-29 03:35:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 03:35:03,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-29 03:35:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 1219 transitions. [2023-11-29 03:35:03,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6772222222222222 [2023-11-29 03:35:03,686 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 1219 transitions. [2023-11-29 03:35:03,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 1219 transitions. [2023-11-29 03:35:03,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:35:03,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 1219 transitions. [2023-11-29 03:35:03,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 27.08888888888889) internal successors, (1219), 45 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:35:03,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 40.0) internal successors, (1840), 46 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:35:03,692 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 40.0) internal successors, (1840), 46 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:35:03,692 INFO L175 Difference]: Start difference. First operand has 312 places, 844 transitions, 12927 flow. Second operand 45 states and 1219 transitions. [2023-11-29 03:35:03,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 1260 transitions, 20993 flow [2023-11-29 03:35:04,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 1260 transitions, 19853 flow, removed 542 selfloop flow, removed 21 redundant places. [2023-11-29 03:35:04,674 INFO L231 Difference]: Finished difference. Result has 340 places, 1048 transitions, 17365 flow [2023-11-29 03:35:04,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11997, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=17365, PETRI_PLACES=340, PETRI_TRANSITIONS=1048} [2023-11-29 03:35:04,675 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 298 predicate places. [2023-11-29 03:35:04,675 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 1048 transitions, 17365 flow [2023-11-29 03:35:04,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 24.28) internal successors, (607), 25 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:35:04,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:35:04,676 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:35:04,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:35:04,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 03:35:04,877 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:35:04,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:35:04,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1181186313, now seen corresponding path program 5 times [2023-11-29 03:35:04,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:35:04,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886631595] [2023-11-29 03:35:04,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:35:04,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:35:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:35:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:35:05,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:35:05,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886631595] [2023-11-29 03:35:05,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886631595] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:35:05,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407529782] [2023-11-29 03:35:05,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:35:05,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:35:05,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:35:05,682 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:35:05,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:35:05,857 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 03:35:05,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:35:05,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:35:05,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:35:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:35:06,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:35:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:35:08,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407529782] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:35:08,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:35:08,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2023-11-29 03:35:08,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721941230] [2023-11-29 03:35:08,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:35:08,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 03:35:08,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:35:08,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 03:35:08,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:35:09,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2023-11-29 03:35:09,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 1048 transitions, 17365 flow. Second operand has 24 states, 24 states have (on average 24.25) internal successors, (582), 24 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:35:09,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:35:09,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2023-11-29 03:35:09,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:35:30,250 INFO L124 PetriNetUnfolderBase]: 5990/11332 cut-off events. [2023-11-29 03:35:30,250 INFO L125 PetriNetUnfolderBase]: For 194941/195257 co-relation queries the response was YES. [2023-11-29 03:35:30,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84980 conditions, 11332 events. 5990/11332 cut-off events. For 194941/195257 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 90124 event pairs, 70 based on Foata normal form. 197/11505 useless extension candidates. Maximal degree in co-relation 84871. Up to 2961 conditions per place. [2023-11-29 03:35:30,382 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 601 selfloop transitions, 910 changer transitions 146/1699 dead transitions. [2023-11-29 03:35:30,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1699 transitions, 30733 flow [2023-11-29 03:35:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 03:35:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-11-29 03:35:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 1433 transitions. [2023-11-29 03:35:30,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6759433962264151 [2023-11-29 03:35:30,386 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 1433 transitions. [2023-11-29 03:35:30,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 1433 transitions. [2023-11-29 03:35:30,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:35:30,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 1433 transitions. [2023-11-29 03:35:30,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 27.037735849056602) internal successors, (1433), 53 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:35:30,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 40.0) internal successors, (2160), 54 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:35:30,391 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 40.0) internal successors, (2160), 54 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:35:30,391 INFO L175 Difference]: Start difference. First operand has 340 places, 1048 transitions, 17365 flow. Second operand 53 states and 1433 transitions. [2023-11-29 03:35:30,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1699 transitions, 30733 flow [2023-11-29 03:35:32,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 1699 transitions, 29996 flow, removed 331 selfloop flow, removed 14 redundant places. [2023-11-29 03:35:32,198 INFO L231 Difference]: Finished difference. Result has 395 places, 1379 transitions, 26500 flow [2023-11-29 03:35:32,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16786, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=605, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=26500, PETRI_PLACES=395, PETRI_TRANSITIONS=1379} [2023-11-29 03:35:32,199 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 353 predicate places. [2023-11-29 03:35:32,200 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 1379 transitions, 26500 flow [2023-11-29 03:35:32,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 24.25) internal successors, (582), 24 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:35:32,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:35:32,200 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:35:32,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:35:32,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:35:32,401 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:35:32,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:35:32,402 INFO L85 PathProgramCache]: Analyzing trace with hash -347813149, now seen corresponding path program 3 times [2023-11-29 03:35:32,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:35:32,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58361664] [2023-11-29 03:35:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:35:32,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:35:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:35:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:35:33,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:35:33,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58361664] [2023-11-29 03:35:33,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58361664] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:35:33,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386081516] [2023-11-29 03:35:33,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:35:33,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:35:33,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:35:33,606 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:35:33,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:35:33,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 03:35:33,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:35:33,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 03:35:33,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:35:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:35:34,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:35:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:35:35,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386081516] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:35:35,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:35:35,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 34 [2023-11-29 03:35:35,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023580304] [2023-11-29 03:35:35,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:35:35,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 03:35:35,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:35:35,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 03:35:35,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=989, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 03:35:35,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 40 [2023-11-29 03:35:35,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 1379 transitions, 26500 flow. Second operand has 35 states, 35 states have (on average 21.057142857142857) internal successors, (737), 35 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:35:35,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:35:35,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 40 [2023-11-29 03:35:35,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:36:11,902 INFO L124 PetriNetUnfolderBase]: 10896/18538 cut-off events. [2023-11-29 03:36:11,902 INFO L125 PetriNetUnfolderBase]: For 408033/408040 co-relation queries the response was YES. [2023-11-29 03:36:12,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153265 conditions, 18538 events. 10896/18538 cut-off events. For 408033/408040 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 138717 event pairs, 154 based on Foata normal form. 21/18558 useless extension candidates. Maximal degree in co-relation 153135. Up to 4750 conditions per place. [2023-11-29 03:36:12,203 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 801 selfloop transitions, 1688 changer transitions 119/2616 dead transitions. [2023-11-29 03:36:12,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 2616 transitions, 54503 flow [2023-11-29 03:36:12,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-11-29 03:36:12,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2023-11-29 03:36:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 2634 transitions. [2023-11-29 03:36:12,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5932432432432433 [2023-11-29 03:36:12,208 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 2634 transitions. [2023-11-29 03:36:12,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 2634 transitions. [2023-11-29 03:36:12,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:36:12,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 2634 transitions. [2023-11-29 03:36:12,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 112 states, 111 states have (on average 23.72972972972973) internal successors, (2634), 111 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:36:12,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 112 states, 112 states have (on average 40.0) internal successors, (4480), 112 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:36:12,224 INFO L81 ComplementDD]: Finished complementDD. Result has 112 states, 112 states have (on average 40.0) internal successors, (4480), 112 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:36:12,224 INFO L175 Difference]: Start difference. First operand has 395 places, 1379 transitions, 26500 flow. Second operand 111 states and 2634 transitions. [2023-11-29 03:36:12,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 2616 transitions, 54503 flow [2023-11-29 03:36:17,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 2616 transitions, 53020 flow, removed 645 selfloop flow, removed 23 redundant places. [2023-11-29 03:36:18,049 INFO L231 Difference]: Finished difference. Result has 530 places, 2056 transitions, 45808 flow [2023-11-29 03:36:18,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=25671, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=45808, PETRI_PLACES=530, PETRI_TRANSITIONS=2056} [2023-11-29 03:36:18,052 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 488 predicate places. [2023-11-29 03:36:18,052 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 2056 transitions, 45808 flow [2023-11-29 03:36:18,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 21.057142857142857) internal successors, (737), 35 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:36:18,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:36:18,052 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:18,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:36:18,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 03:36:18,253 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:36:18,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:18,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2063241154, now seen corresponding path program 6 times [2023-11-29 03:36:18,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:18,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744214987] [2023-11-29 03:36:18,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:18,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:36:18,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:18,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744214987] [2023-11-29 03:36:18,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744214987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:18,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856585356] [2023-11-29 03:36:18,500 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:36:18,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:18,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:18,501 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:36:18,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:36:18,727 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-29 03:36:18,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:36:18,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:36:18,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:36:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:36:18,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:36:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:36:19,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856585356] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:36:19,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:36:19,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 13 [2023-11-29 03:36:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312985906] [2023-11-29 03:36:19,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:36:19,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:36:19,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:36:19,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:36:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:36:19,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2023-11-29 03:36:19,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 2056 transitions, 45808 flow. Second operand has 13 states, 13 states have (on average 25.615384615384617) internal successors, (333), 13 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:36:19,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:36:19,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2023-11-29 03:36:19,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:36:36,173 INFO L124 PetriNetUnfolderBase]: 12659/23782 cut-off events. [2023-11-29 03:36:36,173 INFO L125 PetriNetUnfolderBase]: For 972946/973644 co-relation queries the response was YES. [2023-11-29 03:36:36,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250416 conditions, 23782 events. 12659/23782 cut-off events. For 972946/973644 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 209232 event pairs, 77 based on Foata normal form. 424/24181 useless extension candidates. Maximal degree in co-relation 250230. Up to 7219 conditions per place. [2023-11-29 03:36:36,843 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 1313 selfloop transitions, 2179 changer transitions 0/3568 dead transitions. [2023-11-29 03:36:36,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 3568 transitions, 87371 flow [2023-11-29 03:36:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:36:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 03:36:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 617 transitions. [2023-11-29 03:36:36,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7345238095238096 [2023-11-29 03:36:36,845 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 617 transitions. [2023-11-29 03:36:36,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 617 transitions. [2023-11-29 03:36:36,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:36:36,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 617 transitions. [2023-11-29 03:36:36,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 29.38095238095238) internal successors, (617), 21 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:36:36,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 40.0) internal successors, (880), 22 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:36:36,849 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 40.0) internal successors, (880), 22 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:36:36,849 INFO L175 Difference]: Start difference. First operand has 530 places, 2056 transitions, 45808 flow. Second operand 21 states and 617 transitions. [2023-11-29 03:36:36,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 3568 transitions, 87371 flow [2023-11-29 03:36:54,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 3568 transitions, 82493 flow, removed 2412 selfloop flow, removed 21 redundant places. [2023-11-29 03:36:54,621 INFO L231 Difference]: Finished difference. Result has 529 places, 3062 transitions, 74398 flow [2023-11-29 03:36:54,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=43063, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=74398, PETRI_PLACES=529, PETRI_TRANSITIONS=3062} [2023-11-29 03:36:54,624 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 487 predicate places. [2023-11-29 03:36:54,624 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 3062 transitions, 74398 flow [2023-11-29 03:36:54,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.615384615384617) internal successors, (333), 13 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:36:54,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:36:54,624 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:54,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:36:54,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 03:36:54,825 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:36:54,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:54,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1700934537, now seen corresponding path program 7 times [2023-11-29 03:36:54,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:54,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751436865] [2023-11-29 03:36:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:54,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:36:59,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:59,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751436865] [2023-11-29 03:36:59,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751436865] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:59,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432509581] [2023-11-29 03:36:59,711 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:36:59,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:59,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:59,712 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:36:59,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:37:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:00,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 03:37:00,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:02,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:37:18,900 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:18,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432509581] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:37:18,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:37:18,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2023-11-29 03:37:18,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558413774] [2023-11-29 03:37:18,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:37:18,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 03:37:18,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:18,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 03:37:18,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2023-11-29 03:37:19,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 40 [2023-11-29 03:37:19,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 3062 transitions, 74398 flow. Second operand has 31 states, 31 states have (on average 22.258064516129032) internal successors, (690), 31 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:19,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:37:19,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 40 [2023-11-29 03:37:19,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:37:24,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:37:46,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:37:50,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:38:13,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:38:23,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:38:38,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:38:53,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:39:38,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:39:41,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:39:56,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:40:18,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:40:20,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:40:39,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:41:20,282 INFO L124 PetriNetUnfolderBase]: 17291/31165 cut-off events. [2023-11-29 03:41:20,282 INFO L125 PetriNetUnfolderBase]: For 1249716/1249770 co-relation queries the response was YES. [2023-11-29 03:41:20,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333777 conditions, 31165 events. 17291/31165 cut-off events. For 1249716/1249770 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 267648 event pairs, 137 based on Foata normal form. 68/31226 useless extension candidates. Maximal degree in co-relation 333589. Up to 14039 conditions per place. [2023-11-29 03:41:21,119 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 2266 selfloop transitions, 1950 changer transitions 115/4357 dead transitions. [2023-11-29 03:41:21,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 4357 transitions, 112163 flow [2023-11-29 03:41:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-11-29 03:41:21,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2023-11-29 03:41:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 3016 transitions. [2023-11-29 03:41:21,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6180327868852459 [2023-11-29 03:41:21,124 INFO L72 ComplementDD]: Start complementDD. Operand 122 states and 3016 transitions. [2023-11-29 03:41:21,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 3016 transitions. [2023-11-29 03:41:21,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:41:21,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 122 states and 3016 transitions. [2023-11-29 03:41:21,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 123 states, 122 states have (on average 24.721311475409838) internal successors, (3016), 122 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:41:21,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 123 states, 123 states have (on average 40.0) internal successors, (4920), 123 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:41:21,135 INFO L81 ComplementDD]: Finished complementDD. Result has 123 states, 123 states have (on average 40.0) internal successors, (4920), 123 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:41:21,136 INFO L175 Difference]: Start difference. First operand has 529 places, 3062 transitions, 74398 flow. Second operand 122 states and 3016 transitions. [2023-11-29 03:41:21,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 4357 transitions, 112163 flow [2023-11-29 03:41:49,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 4357 transitions, 109335 flow, removed 1408 selfloop flow, removed 2 redundant places. [2023-11-29 03:41:49,627 INFO L231 Difference]: Finished difference. Result has 703 places, 3818 transitions, 98182 flow [2023-11-29 03:41:49,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72480, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=122, PETRI_FLOW=98182, PETRI_PLACES=703, PETRI_TRANSITIONS=3818} [2023-11-29 03:41:49,630 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 661 predicate places. [2023-11-29 03:41:49,630 INFO L495 AbstractCegarLoop]: Abstraction has has 703 places, 3818 transitions, 98182 flow [2023-11-29 03:41:49,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 22.258064516129032) internal successors, (690), 31 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:41:49,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:41:49,631 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:41:49,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:41:49,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:41:49,831 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:41:49,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:49,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1557973167, now seen corresponding path program 8 times [2023-11-29 03:41:49,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:49,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988633859] [2023-11-29 03:41:49,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:49,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:07,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:07,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988633859] [2023-11-29 03:42:07,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988633859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:42:07,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547363614] [2023-11-29 03:42:07,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:42:07,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:07,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:07,107 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:07,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1997c7b-9e39-40f9-a924-a7813603f6c7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:42:07,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:42:07,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:42:07,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 03:42:07,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:19,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:51,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547363614] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:51,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:43:51,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 36 [2023-11-29 03:43:51,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452669335] [2023-11-29 03:43:51,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:51,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 03:43:51,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 03:43:51,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1096, Unknown=21, NotChecked=0, Total=1332 [2023-11-29 03:43:55,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:43:55,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 40 [2023-11-29 03:43:55,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 3818 transitions, 98182 flow. Second operand has 37 states, 37 states have (on average 21.054054054054053) internal successors, (779), 37 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:55,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:43:55,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 40 [2023-11-29 03:43:55,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:44:21,567 WARN L293 SmtUtils]: Spent 24.64s on a formula simplification. DAG size of input: 125 DAG size of output: 114 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:44:23,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:44:26,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:44:30,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:44:33,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:44:35,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:44:39,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:44:43,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:44:47,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:45:01,236 WARN L293 SmtUtils]: Spent 12.26s on a formula simplification. DAG size of input: 132 DAG size of output: 125 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:45:04,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:45:31,212 WARN L293 SmtUtils]: Spent 18.43s on a formula simplification. DAG size of input: 130 DAG size of output: 128 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:46:26,039 WARN L293 SmtUtils]: Spent 19.74s on a formula simplification. DAG size of input: 127 DAG size of output: 120 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:46:30,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:46:34,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []