./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI --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 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:49:50,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:49:50,942 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:49:50,948 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:49:50,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:49:50,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:49:50,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:49:50,977 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:49:50,978 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:49:50,981 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:49:50,981 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:49:50,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:49:50,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:49:50,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:49:50,988 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:49:50,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:49:50,989 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:49:50,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:49:50,989 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:49:50,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:49:50,990 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:49:50,991 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:49:50,991 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:49:50,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:49:50,992 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:49:50,993 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:49:50,993 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:49:50,993 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:49:50,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:49:50,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:49:50,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:49:50,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:49:50,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:49:50,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:49:50,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:49:50,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:49:50,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:49:50,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:49:50,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:49:50,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:49:50,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:49:50,999 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_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 [2023-11-24 21:49:51,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:49:51,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:49:51,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:49:51,406 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:49:51,406 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:49:51,407 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe030_tso.i [2023-11-24 21:49:54,604 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:49:54,887 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:49:54,896 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/sv-benchmarks/c/pthread-wmm/safe030_tso.i [2023-11-24 21:49:54,919 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/data/c416cc5f9/186a7cbdb2ef409dbfa51546b59c3d33/FLAG76c754214 [2023-11-24 21:49:54,939 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/data/c416cc5f9/186a7cbdb2ef409dbfa51546b59c3d33 [2023-11-24 21:49:54,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:49:54,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:49:54,950 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:49:54,950 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:49:54,984 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:49:54,985 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:49:54" (1/1) ... [2023-11-24 21:49:54,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46bf7a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:54, skipping insertion in model container [2023-11-24 21:49:54,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:49:54" (1/1) ... [2023-11-24 21:49:55,070 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:49:55,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:49:55,581 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:49:55,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:49:55,705 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:49:55,706 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:49:55,715 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:49:55,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55 WrapperNode [2023-11-24 21:49:55,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:49:55,718 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:49:55,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:49:55,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:49:55,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (1/1) ... [2023-11-24 21:49:55,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (1/1) ... [2023-11-24 21:49:55,798 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2023-11-24 21:49:55,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:49:55,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:49:55,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:49:55,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:49:55,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (1/1) ... [2023-11-24 21:49:55,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (1/1) ... [2023-11-24 21:49:55,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (1/1) ... [2023-11-24 21:49:55,861 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 21:49:55,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (1/1) ... [2023-11-24 21:49:55,861 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (1/1) ... [2023-11-24 21:49:55,874 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (1/1) ... [2023-11-24 21:49:55,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (1/1) ... [2023-11-24 21:49:55,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (1/1) ... [2023-11-24 21:49:55,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (1/1) ... [2023-11-24 21:49:55,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:49:55,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:49:55,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:49:55,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:49:55,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (1/1) ... [2023-11-24 21:49:55,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:49:55,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:49:55,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:49:55,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:49:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:49:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:49:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:49:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:49:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:49:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:49:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:49:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:49:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:49:55,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:49:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:49:55,982 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:49:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:49:55,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:49:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:49:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:49:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:49:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:49:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:49:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:49:55,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:49:55,988 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:49:56,177 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:49:56,180 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:49:56,388 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:49:56,513 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:49:56,513 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:49:56,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:56 BoogieIcfgContainer [2023-11-24 21:49:56,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:49:56,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:49:56,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:49:56,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:49:56,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:49:54" (1/3) ... [2023-11-24 21:49:56,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b0f293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:49:56, skipping insertion in model container [2023-11-24 21:49:56,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:55" (2/3) ... [2023-11-24 21:49:56,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b0f293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:49:56, skipping insertion in model container [2023-11-24 21:49:56,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:56" (3/3) ... [2023-11-24 21:49:56,524 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_tso.i [2023-11-24 21:49:56,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:49:56,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-24 21:49:56,545 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:49:56,592 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:49:56,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 52 transitions, 116 flow [2023-11-24 21:49:56,677 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2023-11-24 21:49:56,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:49:56,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 49 events. 2/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-11-24 21:49:56,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 52 transitions, 116 flow [2023-11-24 21:49:56,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 48 transitions, 105 flow [2023-11-24 21:49:56,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:49:56,716 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;@2cae04d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:49:56,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-24 21:49:56,724 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:49:56,724 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:49:56,724 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:49:56,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:56,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:49:56,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:49:56,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:56,734 INFO L85 PathProgramCache]: Analyzing trace with hash 7240, now seen corresponding path program 1 times [2023-11-24 21:49:56,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:56,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49216683] [2023-11-24 21:49:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:56,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:57,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49216683] [2023-11-24 21:49:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49216683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:57,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:57,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:49:57,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511288641] [2023-11-24 21:49:57,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:57,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:57,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:57,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:57,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:49:57,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-24 21:49:57,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:57,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-24 21:49:57,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:57,293 INFO L124 PetriNetUnfolderBase]: 75/247 cut-off events. [2023-11-24 21:49:57,294 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-24 21:49:57,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 247 events. 75/247 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1347 event pairs, 63 based on Foata normal form. 16/234 useless extension candidates. Maximal degree in co-relation 389. Up to 117 conditions per place. [2023-11-24 21:49:57,304 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-24 21:49:57,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 139 flow [2023-11-24 21:49:57,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:57,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-24 21:49:57,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-24 21:49:57,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-24 21:49:57,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-24 21:49:57,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:57,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-24 21:49:57,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,343 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 105 flow. Second operand 3 states and 117 transitions. [2023-11-24 21:49:57,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 139 flow [2023-11-24 21:49:57,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:49:57,357 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-24 21:49:57,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-24 21:49:57,363 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-11-24 21:49:57,363 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-24 21:49:57,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:57,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:49:57,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:49:57,365 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:49:57,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash 7241, now seen corresponding path program 1 times [2023-11-24 21:49:57,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:57,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650281065] [2023-11-24 21:49:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:57,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:57,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:57,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650281065] [2023-11-24 21:49:57,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650281065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:57,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:57,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:49:57,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120686517] [2023-11-24 21:49:57,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:57,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:57,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:57,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:57,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:49:57,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-24 21:49:57,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:57,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-24 21:49:57,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:57,715 INFO L124 PetriNetUnfolderBase]: 75/246 cut-off events. [2023-11-24 21:49:57,716 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-24 21:49:57,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 246 events. 75/246 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1347 event pairs, 63 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 397. Up to 116 conditions per place. [2023-11-24 21:49:57,722 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-24 21:49:57,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 136 flow [2023-11-24 21:49:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-24 21:49:57,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-24 21:49:57,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-24 21:49:57,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-24 21:49:57,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:57,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-24 21:49:57,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,740 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 117 transitions. [2023-11-24 21:49:57,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 136 flow [2023-11-24 21:49:57,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:49:57,746 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-24 21:49:57,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-24 21:49:57,747 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-11-24 21:49:57,749 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-24 21:49:57,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:57,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:49:57,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:49:57,756 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:49:57,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash 215894358, now seen corresponding path program 1 times [2023-11-24 21:49:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:57,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610937416] [2023-11-24 21:49:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:57,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:57,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:57,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610937416] [2023-11-24 21:49:57,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610937416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:57,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:57,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:49:57,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313635665] [2023-11-24 21:49:57,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:57,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:57,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:57,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:49:57,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-24 21:49:57,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:57,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-24 21:49:57,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:57,922 INFO L124 PetriNetUnfolderBase]: 76/244 cut-off events. [2023-11-24 21:49:57,922 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-24 21:49:57,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 244 events. 76/244 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1327 event pairs, 63 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 398. Up to 116 conditions per place. [2023-11-24 21:49:57,926 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-24 21:49:57,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 136 flow [2023-11-24 21:49:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-24 21:49:57,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2023-11-24 21:49:57,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-24 21:49:57,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-24 21:49:57,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:57,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-24 21:49:57,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,932 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 3 states and 115 transitions. [2023-11-24 21:49:57,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 136 flow [2023-11-24 21:49:57,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:49:57,934 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 94 flow [2023-11-24 21:49:57,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-24 21:49:57,936 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-11-24 21:49:57,936 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 94 flow [2023-11-24 21:49:57,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:57,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:57,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:49:57,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:49:57,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:49:57,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:57,938 INFO L85 PathProgramCache]: Analyzing trace with hash 215894359, now seen corresponding path program 1 times [2023-11-24 21:49:57,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:57,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493589305] [2023-11-24 21:49:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:57,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:58,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:58,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493589305] [2023-11-24 21:49:58,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493589305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:58,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:58,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:49:58,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235940604] [2023-11-24 21:49:58,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:58,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:58,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:58,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:58,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:49:58,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-24 21:49:58,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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) [2023-11-24 21:49:58,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:58,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-24 21:49:58,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:58,141 INFO L124 PetriNetUnfolderBase]: 75/242 cut-off events. [2023-11-24 21:49:58,142 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:49:58,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 242 events. 75/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1330 event pairs, 42 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 395. Up to 113 conditions per place. [2023-11-24 21:49:58,146 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-24 21:49:58,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 132 flow [2023-11-24 21:49:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-24 21:49:58,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-24 21:49:58,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-24 21:49:58,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-24 21:49:58,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:58,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-24 21:49:58,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,151 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 94 flow. Second operand 3 states and 117 transitions. [2023-11-24 21:49:58,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 132 flow [2023-11-24 21:49:58,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:49:58,153 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 92 flow [2023-11-24 21:49:58,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-24 21:49:58,154 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-11-24 21:49:58,155 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 92 flow [2023-11-24 21:49:58,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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) [2023-11-24 21:49:58,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:58,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:49:58,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:49:58,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:49:58,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:58,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2142982709, now seen corresponding path program 1 times [2023-11-24 21:49:58,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:58,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205277810] [2023-11-24 21:49:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:58,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:58,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:58,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205277810] [2023-11-24 21:49:58,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205277810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:58,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:58,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:49:58,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646357012] [2023-11-24 21:49:58,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:58,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:58,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:58,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:58,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:49:58,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-24 21:49:58,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:58,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-24 21:49:58,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:58,327 INFO L124 PetriNetUnfolderBase]: 79/242 cut-off events. [2023-11-24 21:49:58,327 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:49:58,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 242 events. 79/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1336 event pairs, 27 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 403. Up to 112 conditions per place. [2023-11-24 21:49:58,330 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-24 21:49:58,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 132 flow [2023-11-24 21:49:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-24 21:49:58,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2023-11-24 21:49:58,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-24 21:49:58,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-24 21:49:58,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:58,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-24 21:49:58,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,336 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 92 flow. Second operand 3 states and 115 transitions. [2023-11-24 21:49:58,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 132 flow [2023-11-24 21:49:58,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:49:58,340 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 90 flow [2023-11-24 21:49:58,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-24 21:49:58,344 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-11-24 21:49:58,344 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 90 flow [2023-11-24 21:49:58,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:58,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:49:58,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:49:58,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:49:58,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:58,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2142982710, now seen corresponding path program 1 times [2023-11-24 21:49:58,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:58,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361119002] [2023-11-24 21:49:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:58,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:58,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:58,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361119002] [2023-11-24 21:49:58,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361119002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:58,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:58,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:49:58,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751934555] [2023-11-24 21:49:58,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:58,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:58,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:58,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:58,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:49:58,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-24 21:49:58,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:58,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-24 21:49:58,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:58,628 INFO L124 PetriNetUnfolderBase]: 75/234 cut-off events. [2023-11-24 21:49:58,628 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-24 21:49:58,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 234 events. 75/234 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1254 event pairs, 27 based on Foata normal form. 4/224 useless extension candidates. Maximal degree in co-relation 389. Up to 104 conditions per place. [2023-11-24 21:49:58,632 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-24 21:49:58,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 128 flow [2023-11-24 21:49:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:58,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-24 21:49:58,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-24 21:49:58,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-24 21:49:58,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-24 21:49:58,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:58,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-24 21:49:58,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,641 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 90 flow. Second operand 3 states and 117 transitions. [2023-11-24 21:49:58,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 128 flow [2023-11-24 21:49:58,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:49:58,645 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 88 flow [2023-11-24 21:49:58,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-11-24 21:49:58,648 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-11-24 21:49:58,649 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 88 flow [2023-11-24 21:49:58,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:58,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:58,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:49:58,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:49:58,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:49:58,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:58,652 INFO L85 PathProgramCache]: Analyzing trace with hash 597027779, now seen corresponding path program 1 times [2023-11-24 21:49:58,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:58,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42107401] [2023-11-24 21:49:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:58,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:59,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:49:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42107401] [2023-11-24 21:49:59,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42107401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:59,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:59,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:49:59,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9896013] [2023-11-24 21:49:59,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:59,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:49:59,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:49:59,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:49:59,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:49:59,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 52 [2023-11-24 21:49:59,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 88 flow. Second operand has 8 states, 8 states have (on average 30.625) internal successors, (245), 8 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:59,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:59,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 52 [2023-11-24 21:49:59,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:59,720 INFO L124 PetriNetUnfolderBase]: 76/225 cut-off events. [2023-11-24 21:49:59,720 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-24 21:49:59,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 225 events. 76/225 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1176 event pairs, 36 based on Foata normal form. 8/219 useless extension candidates. Maximal degree in co-relation 383. Up to 104 conditions per place. [2023-11-24 21:49:59,723 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 15 selfloop transitions, 3 changer transitions 4/44 dead transitions. [2023-11-24 21:49:59,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 142 flow [2023-11-24 21:49:59,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:49:59,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:49:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2023-11-24 21:49:59,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6314102564102564 [2023-11-24 21:49:59,726 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 197 transitions. [2023-11-24 21:49:59,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 197 transitions. [2023-11-24 21:49:59,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:59,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 197 transitions. [2023-11-24 21:49:59,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:59,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:59,736 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:59,736 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 88 flow. Second operand 6 states and 197 transitions. [2023-11-24 21:49:59,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 142 flow [2023-11-24 21:49:59,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:49:59,741 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 86 flow [2023-11-24 21:49:59,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=86, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-11-24 21:49:59,744 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-11-24 21:49:59,744 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 86 flow [2023-11-24 21:49:59,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.625) internal successors, (245), 8 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:49:59,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:59,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:49:59,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:49:59,747 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:49:59,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:59,748 INFO L85 PathProgramCache]: Analyzing trace with hash 597029128, now seen corresponding path program 1 times [2023-11-24 21:49:59,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:59,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568590570] [2023-11-24 21:49:59,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:59,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:00,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:00,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568590570] [2023-11-24 21:50:00,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568590570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:00,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:00,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:50:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487342020] [2023-11-24 21:50:00,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:00,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:50:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:00,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:50:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:50:00,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2023-11-24 21:50:00,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:00,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:00,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2023-11-24 21:50:00,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:00,755 INFO L124 PetriNetUnfolderBase]: 1998/3501 cut-off events. [2023-11-24 21:50:00,756 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-24 21:50:00,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6562 conditions, 3501 events. 1998/3501 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 23776 event pairs, 433 based on Foata normal form. 0/3366 useless extension candidates. Maximal degree in co-relation 6551. Up to 1096 conditions per place. [2023-11-24 21:50:00,778 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 30 selfloop transitions, 7 changer transitions 61/114 dead transitions. [2023-11-24 21:50:00,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 114 transitions, 444 flow [2023-11-24 21:50:00,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:50:00,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:50:00,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 334 transitions. [2023-11-24 21:50:00,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7136752136752137 [2023-11-24 21:50:00,786 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 334 transitions. [2023-11-24 21:50:00,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 334 transitions. [2023-11-24 21:50:00,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:00,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 334 transitions. [2023-11-24 21:50:00,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.111111111111114) internal successors, (334), 9 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:00,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:00,790 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:00,790 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 86 flow. Second operand 9 states and 334 transitions. [2023-11-24 21:50:00,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 114 transitions, 444 flow [2023-11-24 21:50:00,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 114 transitions, 436 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:50:00,795 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 177 flow [2023-11-24 21:50:00,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=177, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2023-11-24 21:50:00,798 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-11-24 21:50:00,798 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 177 flow [2023-11-24 21:50:00,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:00,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:00,799 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] [2023-11-24 21:50:00,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:50:00,800 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:50:00,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:00,800 INFO L85 PathProgramCache]: Analyzing trace with hash -626788151, now seen corresponding path program 1 times [2023-11-24 21:50:00,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:00,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669945992] [2023-11-24 21:50:00,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:00,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:01,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669945992] [2023-11-24 21:50:01,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669945992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:01,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:01,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:50:01,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372848696] [2023-11-24 21:50:01,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:01,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:50:01,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:01,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:50:01,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:50:01,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2023-11-24 21:50:01,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:01,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:01,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2023-11-24 21:50:01,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:01,665 INFO L124 PetriNetUnfolderBase]: 1395/2630 cut-off events. [2023-11-24 21:50:01,665 INFO L125 PetriNetUnfolderBase]: For 5077/5087 co-relation queries the response was YES. [2023-11-24 21:50:01,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8353 conditions, 2630 events. 1395/2630 cut-off events. For 5077/5087 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17962 event pairs, 128 based on Foata normal form. 94/2712 useless extension candidates. Maximal degree in co-relation 8334. Up to 986 conditions per place. [2023-11-24 21:50:01,692 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 38 selfloop transitions, 11 changer transitions 58/123 dead transitions. [2023-11-24 21:50:01,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 123 transitions, 873 flow [2023-11-24 21:50:01,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:50:01,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:50:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 360 transitions. [2023-11-24 21:50:01,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2023-11-24 21:50:01,695 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 360 transitions. [2023-11-24 21:50:01,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 360 transitions. [2023-11-24 21:50:01,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:01,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 360 transitions. [2023-11-24 21:50:01,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:01,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:01,699 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:01,699 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 177 flow. Second operand 10 states and 360 transitions. [2023-11-24 21:50:01,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 123 transitions, 873 flow [2023-11-24 21:50:01,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 123 transitions, 749 flow, removed 30 selfloop flow, removed 4 redundant places. [2023-11-24 21:50:01,746 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 275 flow [2023-11-24 21:50:01,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=275, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2023-11-24 21:50:01,748 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2023-11-24 21:50:01,748 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 275 flow [2023-11-24 21:50:01,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:01,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:01,748 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] [2023-11-24 21:50:01,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:50:01,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:50:01,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash 872208969, now seen corresponding path program 1 times [2023-11-24 21:50:01,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:01,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081104927] [2023-11-24 21:50:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:01,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:01,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:01,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081104927] [2023-11-24 21:50:01,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081104927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:01,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:01,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:50:01,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109051968] [2023-11-24 21:50:01,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:01,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:50:01,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:01,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:50:01,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:50:01,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-24 21:50:01,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 275 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:01,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:01,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-24 21:50:01,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:02,387 INFO L124 PetriNetUnfolderBase]: 874/1879 cut-off events. [2023-11-24 21:50:02,387 INFO L125 PetriNetUnfolderBase]: For 6045/6243 co-relation queries the response was YES. [2023-11-24 21:50:02,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6275 conditions, 1879 events. 874/1879 cut-off events. For 6045/6243 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13367 event pairs, 243 based on Foata normal form. 164/1925 useless extension candidates. Maximal degree in co-relation 6249. Up to 854 conditions per place. [2023-11-24 21:50:02,415 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 26 selfloop transitions, 7 changer transitions 25/87 dead transitions. [2023-11-24 21:50:02,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 87 transitions, 620 flow [2023-11-24 21:50:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:50:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:50:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 256 transitions. [2023-11-24 21:50:02,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7032967032967034 [2023-11-24 21:50:02,418 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 256 transitions. [2023-11-24 21:50:02,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 256 transitions. [2023-11-24 21:50:02,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:02,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 256 transitions. [2023-11-24 21:50:02,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:02,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:02,422 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:02,423 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 275 flow. Second operand 7 states and 256 transitions. [2023-11-24 21:50:02,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 87 transitions, 620 flow [2023-11-24 21:50:02,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 600 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-24 21:50:02,456 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 374 flow [2023-11-24 21:50:02,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=374, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-11-24 21:50:02,458 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2023-11-24 21:50:02,459 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 374 flow [2023-11-24 21:50:02,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:02,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:02,461 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] [2023-11-24 21:50:02,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:50:02,461 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:50:02,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:02,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1816990244, now seen corresponding path program 1 times [2023-11-24 21:50:02,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:02,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963863334] [2023-11-24 21:50:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:02,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:02,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:02,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963863334] [2023-11-24 21:50:02,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963863334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:02,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:02,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:50:02,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992884204] [2023-11-24 21:50:02,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:02,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:50:02,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:50:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:50:02,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-24 21:50:02,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 374 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:02,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:02,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-24 21:50:02,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:03,058 INFO L124 PetriNetUnfolderBase]: 834/1747 cut-off events. [2023-11-24 21:50:03,058 INFO L125 PetriNetUnfolderBase]: For 6922/7017 co-relation queries the response was YES. [2023-11-24 21:50:03,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6413 conditions, 1747 events. 834/1747 cut-off events. For 6922/7017 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11929 event pairs, 277 based on Foata normal form. 80/1743 useless extension candidates. Maximal degree in co-relation 6380. Up to 843 conditions per place. [2023-11-24 21:50:03,082 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 24 selfloop transitions, 6 changer transitions 25/91 dead transitions. [2023-11-24 21:50:03,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 695 flow [2023-11-24 21:50:03,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:50:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:50:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 256 transitions. [2023-11-24 21:50:03,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7032967032967034 [2023-11-24 21:50:03,084 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 256 transitions. [2023-11-24 21:50:03,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 256 transitions. [2023-11-24 21:50:03,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:03,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 256 transitions. [2023-11-24 21:50:03,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:03,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:03,087 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:03,087 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 374 flow. Second operand 7 states and 256 transitions. [2023-11-24 21:50:03,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 695 flow [2023-11-24 21:50:03,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 656 flow, removed 16 selfloop flow, removed 7 redundant places. [2023-11-24 21:50:03,110 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 423 flow [2023-11-24 21:50:03,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=423, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2023-11-24 21:50:03,111 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2023-11-24 21:50:03,111 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 423 flow [2023-11-24 21:50:03,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:03,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:03,112 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] [2023-11-24 21:50:03,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:50:03,112 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:50:03,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:03,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1071874294, now seen corresponding path program 1 times [2023-11-24 21:50:03,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:03,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398940741] [2023-11-24 21:50:03,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:03,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:03,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:03,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398940741] [2023-11-24 21:50:03,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398940741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:03,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:03,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:50:03,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842449908] [2023-11-24 21:50:03,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:03,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:50:03,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:03,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:50:03,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:50:03,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-24 21:50:03,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 423 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:03,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:03,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-24 21:50:03,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:03,658 INFO L124 PetriNetUnfolderBase]: 887/2025 cut-off events. [2023-11-24 21:50:03,658 INFO L125 PetriNetUnfolderBase]: For 10710/10903 co-relation queries the response was YES. [2023-11-24 21:50:03,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 2025 events. 887/2025 cut-off events. For 10710/10903 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 15817 event pairs, 243 based on Foata normal form. 116/2012 useless extension candidates. Maximal degree in co-relation 7489. Up to 581 conditions per place. [2023-11-24 21:50:03,684 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 28 selfloop transitions, 8 changer transitions 21/89 dead transitions. [2023-11-24 21:50:03,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 704 flow [2023-11-24 21:50:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:50:03,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:50:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 257 transitions. [2023-11-24 21:50:03,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7060439560439561 [2023-11-24 21:50:03,687 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 257 transitions. [2023-11-24 21:50:03,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 257 transitions. [2023-11-24 21:50:03,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:03,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 257 transitions. [2023-11-24 21:50:03,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:03,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:03,690 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:03,690 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 423 flow. Second operand 7 states and 257 transitions. [2023-11-24 21:50:03,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 704 flow [2023-11-24 21:50:03,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 89 transitions, 670 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-24 21:50:03,710 INFO L231 Difference]: Finished difference. Result has 77 places, 57 transitions, 423 flow [2023-11-24 21:50:03,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=423, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2023-11-24 21:50:03,711 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2023-11-24 21:50:03,712 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 423 flow [2023-11-24 21:50:03,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:03,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:03,712 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] [2023-11-24 21:50:03,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:50:03,713 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:50:03,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:03,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1642816426, now seen corresponding path program 1 times [2023-11-24 21:50:03,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:03,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443136757] [2023-11-24 21:50:03,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:03,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:03,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:03,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443136757] [2023-11-24 21:50:03,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443136757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:03,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:03,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:50:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424150121] [2023-11-24 21:50:03,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:03,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:50:03,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:03,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:50:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:50:03,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-24 21:50:03,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 423 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:03,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:03,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-24 21:50:03,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:04,357 INFO L124 PetriNetUnfolderBase]: 1040/2411 cut-off events. [2023-11-24 21:50:04,357 INFO L125 PetriNetUnfolderBase]: For 14979/15196 co-relation queries the response was YES. [2023-11-24 21:50:04,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8913 conditions, 2411 events. 1040/2411 cut-off events. For 14979/15196 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20055 event pairs, 323 based on Foata normal form. 67/2339 useless extension candidates. Maximal degree in co-relation 8877. Up to 653 conditions per place. [2023-11-24 21:50:04,387 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 25 selfloop transitions, 5 changer transitions 20/85 dead transitions. [2023-11-24 21:50:04,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 85 transitions, 682 flow [2023-11-24 21:50:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:50:04,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:50:04,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2023-11-24 21:50:04,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-24 21:50:04,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 255 transitions. [2023-11-24 21:50:04,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 255 transitions. [2023-11-24 21:50:04,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:04,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 255 transitions. [2023-11-24 21:50:04,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.42857142857143) internal successors, (255), 7 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:04,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:04,392 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:04,392 INFO L175 Difference]: Start difference. First operand has 77 places, 57 transitions, 423 flow. Second operand 7 states and 255 transitions. [2023-11-24 21:50:04,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 85 transitions, 682 flow [2023-11-24 21:50:04,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 85 transitions, 634 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-24 21:50:04,414 INFO L231 Difference]: Finished difference. Result has 79 places, 56 transitions, 414 flow [2023-11-24 21:50:04,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=414, PETRI_PLACES=79, PETRI_TRANSITIONS=56} [2023-11-24 21:50:04,415 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2023-11-24 21:50:04,415 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 56 transitions, 414 flow [2023-11-24 21:50:04,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:04,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:04,416 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] [2023-11-24 21:50:04,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:50:04,416 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:50:04,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash -692997220, now seen corresponding path program 1 times [2023-11-24 21:50:04,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:04,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957613263] [2023-11-24 21:50:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:04,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:04,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957613263] [2023-11-24 21:50:04,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957613263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:04,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:04,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:50:04,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552445831] [2023-11-24 21:50:04,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:04,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:50:04,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:04,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:50:04,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:50:04,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2023-11-24 21:50:04,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 56 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:04,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:04,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2023-11-24 21:50:04,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:05,308 INFO L124 PetriNetUnfolderBase]: 1729/3691 cut-off events. [2023-11-24 21:50:05,308 INFO L125 PetriNetUnfolderBase]: For 21208/21208 co-relation queries the response was YES. [2023-11-24 21:50:05,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14063 conditions, 3691 events. 1729/3691 cut-off events. For 21208/21208 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 31491 event pairs, 347 based on Foata normal form. 58/3676 useless extension candidates. Maximal degree in co-relation 14026. Up to 1086 conditions per place. [2023-11-24 21:50:05,353 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 41 selfloop transitions, 18 changer transitions 44/119 dead transitions. [2023-11-24 21:50:05,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 1177 flow [2023-11-24 21:50:05,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:50:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:50:05,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 345 transitions. [2023-11-24 21:50:05,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6634615384615384 [2023-11-24 21:50:05,355 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 345 transitions. [2023-11-24 21:50:05,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 345 transitions. [2023-11-24 21:50:05,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:05,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 345 transitions. [2023-11-24 21:50:05,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:05,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:05,359 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:05,359 INFO L175 Difference]: Start difference. First operand has 79 places, 56 transitions, 414 flow. Second operand 10 states and 345 transitions. [2023-11-24 21:50:05,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 1177 flow [2023-11-24 21:50:05,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 119 transitions, 1092 flow, removed 35 selfloop flow, removed 6 redundant places. [2023-11-24 21:50:05,408 INFO L231 Difference]: Finished difference. Result has 85 places, 55 transitions, 436 flow [2023-11-24 21:50:05,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=436, PETRI_PLACES=85, PETRI_TRANSITIONS=55} [2023-11-24 21:50:05,409 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2023-11-24 21:50:05,409 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 55 transitions, 436 flow [2023-11-24 21:50:05,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:05,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:05,409 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] [2023-11-24 21:50:05,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:50:05,410 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:50:05,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:05,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2142407221, now seen corresponding path program 1 times [2023-11-24 21:50:05,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:05,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57206346] [2023-11-24 21:50:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:05,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:05,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:05,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57206346] [2023-11-24 21:50:05,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57206346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:05,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:05,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:50:05,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820653042] [2023-11-24 21:50:05,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:05,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:50:05,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:05,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:50:05,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:50:05,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-24 21:50:05,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 55 transitions, 436 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:05,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:05,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-24 21:50:05,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:06,334 INFO L124 PetriNetUnfolderBase]: 2696/5154 cut-off events. [2023-11-24 21:50:06,334 INFO L125 PetriNetUnfolderBase]: For 15330/15523 co-relation queries the response was YES. [2023-11-24 21:50:06,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13994 conditions, 5154 events. 2696/5154 cut-off events. For 15330/15523 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 40655 event pairs, 927 based on Foata normal form. 263/5187 useless extension candidates. Maximal degree in co-relation 13954. Up to 2513 conditions per place. [2023-11-24 21:50:06,397 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 27 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2023-11-24 21:50:06,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 535 flow [2023-11-24 21:50:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:50:06,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:50:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2023-11-24 21:50:06,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7403846153846154 [2023-11-24 21:50:06,399 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 154 transitions. [2023-11-24 21:50:06,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 154 transitions. [2023-11-24 21:50:06,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:06,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 154 transitions. [2023-11-24 21:50:06,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:06,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:06,402 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:06,402 INFO L175 Difference]: Start difference. First operand has 85 places, 55 transitions, 436 flow. Second operand 4 states and 154 transitions. [2023-11-24 21:50:06,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 535 flow [2023-11-24 21:50:06,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 507 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-11-24 21:50:06,579 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 446 flow [2023-11-24 21:50:06,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2023-11-24 21:50:06,580 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2023-11-24 21:50:06,580 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 446 flow [2023-11-24 21:50:06,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:06,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:06,581 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, 1, 1, 1] [2023-11-24 21:50:06,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:50:06,581 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:50:06,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1636843708, now seen corresponding path program 1 times [2023-11-24 21:50:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:06,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414123971] [2023-11-24 21:50:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:06,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:06,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:06,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414123971] [2023-11-24 21:50:06,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414123971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:06,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:06,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:50:06,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386933353] [2023-11-24 21:50:06,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:06,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:50:06,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:06,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:50:06,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:50:06,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-24 21:50:06,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 446 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:06,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:06,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-24 21:50:06,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:07,542 INFO L124 PetriNetUnfolderBase]: 2008/3855 cut-off events. [2023-11-24 21:50:07,542 INFO L125 PetriNetUnfolderBase]: For 3511/4291 co-relation queries the response was YES. [2023-11-24 21:50:07,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 3855 events. 2008/3855 cut-off events. For 3511/4291 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 29265 event pairs, 213 based on Foata normal form. 283/3947 useless extension candidates. Maximal degree in co-relation 10398. Up to 1820 conditions per place. [2023-11-24 21:50:07,567 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 31 selfloop transitions, 8 changer transitions 4/80 dead transitions. [2023-11-24 21:50:07,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 595 flow [2023-11-24 21:50:07,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:50:07,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:50:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2023-11-24 21:50:07,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7461538461538462 [2023-11-24 21:50:07,569 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2023-11-24 21:50:07,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2023-11-24 21:50:07,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:07,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2023-11-24 21:50:07,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:07,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:07,572 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:07,572 INFO L175 Difference]: Start difference. First operand has 77 places, 59 transitions, 446 flow. Second operand 5 states and 194 transitions. [2023-11-24 21:50:07,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 595 flow [2023-11-24 21:50:07,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 564 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-24 21:50:07,587 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 454 flow [2023-11-24 21:50:07,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=454, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2023-11-24 21:50:07,588 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2023-11-24 21:50:07,588 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 454 flow [2023-11-24 21:50:07,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:07,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:07,589 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, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:07,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 21:50:07,589 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:50:07,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:07,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1389467513, now seen corresponding path program 1 times [2023-11-24 21:50:07,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:07,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094178071] [2023-11-24 21:50:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:07,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:07,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:07,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094178071] [2023-11-24 21:50:07,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094178071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:07,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:07,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:50:07,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261102534] [2023-11-24 21:50:07,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:07,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:50:07,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:07,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:50:07,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:50:07,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-24 21:50:07,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:07,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:07,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-24 21:50:07,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:08,332 INFO L124 PetriNetUnfolderBase]: 1654/3089 cut-off events. [2023-11-24 21:50:08,333 INFO L125 PetriNetUnfolderBase]: For 5439/7096 co-relation queries the response was YES. [2023-11-24 21:50:08,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9969 conditions, 3089 events. 1654/3089 cut-off events. For 5439/7096 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 22573 event pairs, 95 based on Foata normal form. 256/3160 useless extension candidates. Maximal degree in co-relation 9931. Up to 1324 conditions per place. [2023-11-24 21:50:08,352 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 0 selfloop transitions, 0 changer transitions 76/76 dead transitions. [2023-11-24 21:50:08,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 557 flow [2023-11-24 21:50:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:50:08,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:50:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2023-11-24 21:50:08,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2023-11-24 21:50:08,355 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 224 transitions. [2023-11-24 21:50:08,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 224 transitions. [2023-11-24 21:50:08,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:08,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 224 transitions. [2023-11-24 21:50:08,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:08,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:08,358 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:08,358 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 454 flow. Second operand 6 states and 224 transitions. [2023-11-24 21:50:08,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 557 flow [2023-11-24 21:50:08,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 76 transitions, 508 flow, removed 13 selfloop flow, removed 11 redundant places. [2023-11-24 21:50:08,368 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2023-11-24 21:50:08,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2023-11-24 21:50:08,369 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2023-11-24 21:50:08,369 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2023-11-24 21:50:08,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:08,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-24 21:50:08,373 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-24 21:50:08,373 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-24 21:50:08,373 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-24 21:50:08,373 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-24 21:50:08,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-24 21:50:08,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-24 21:50:08,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-24 21:50:08,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-24 21:50:08,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-24 21:50:08,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-24 21:50:08,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 21:50:08,375 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:08,379 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:50:08,379 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:50:08,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:50:08 BasicIcfg [2023-11-24 21:50:08,385 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:50:08,386 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:50:08,386 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:50:08,386 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:50:08,386 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:56" (3/4) ... [2023-11-24 21:50:08,389 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:50:08,393 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-24 21:50:08,393 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-24 21:50:08,393 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-24 21:50:08,400 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2023-11-24 21:50:08,400 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-24 21:50:08,400 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 21:50:08,401 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:50:08,509 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:50:08,509 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:50:08,509 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:50:08,510 INFO L158 Benchmark]: Toolchain (without parser) took 13563.89ms. Allocated memory was 167.8MB in the beginning and 369.1MB in the end (delta: 201.3MB). Free memory was 128.8MB in the beginning and 163.9MB in the end (delta: -35.1MB). Peak memory consumption was 164.8MB. Max. memory is 16.1GB. [2023-11-24 21:50:08,510 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 119.5MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:50:08,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 766.90ms. Allocated memory is still 167.8MB. Free memory was 128.8MB in the beginning and 120.7MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-24 21:50:08,511 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.71ms. Allocated memory is still 167.8MB. Free memory was 120.7MB in the beginning and 118.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:50:08,512 INFO L158 Benchmark]: Boogie Preprocessor took 90.93ms. Allocated memory is still 167.8MB. Free memory was 118.6MB in the beginning and 115.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:50:08,512 INFO L158 Benchmark]: RCFGBuilder took 622.52ms. Allocated memory is still 167.8MB. Free memory was 115.8MB in the beginning and 93.4MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:50:08,512 INFO L158 Benchmark]: TraceAbstraction took 11868.33ms. Allocated memory was 167.8MB in the beginning and 369.1MB in the end (delta: 201.3MB). Free memory was 92.7MB in the beginning and 169.1MB in the end (delta: -76.4MB). Peak memory consumption was 151.8MB. Max. memory is 16.1GB. [2023-11-24 21:50:08,513 INFO L158 Benchmark]: Witness Printer took 123.78ms. Allocated memory is still 369.1MB. Free memory was 169.1MB in the beginning and 163.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:50:08,515 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 119.5MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 766.90ms. Allocated memory is still 167.8MB. Free memory was 128.8MB in the beginning and 120.7MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.71ms. Allocated memory is still 167.8MB. Free memory was 120.7MB in the beginning and 118.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.93ms. Allocated memory is still 167.8MB. Free memory was 118.6MB in the beginning and 115.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 622.52ms. Allocated memory is still 167.8MB. Free memory was 115.8MB in the beginning and 93.4MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11868.33ms. Allocated memory was 167.8MB in the beginning and 369.1MB in the end (delta: 201.3MB). Free memory was 92.7MB in the beginning and 169.1MB in the end (delta: -76.4MB). Peak memory consumption was 151.8MB. Max. memory is 16.1GB. * Witness Printer took 123.78ms. Allocated memory is still 369.1MB. Free memory was 169.1MB in the beginning and 163.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 772]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 75 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.7s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 623 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 506 mSDsluCounter, 268 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 185 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1328 IncrementalHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 83 mSDtfsCounter, 1328 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=454occurred in iteration=16, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 278 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 1200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:50:08,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3772d84-0e42-4924-aebe-54b0510e05f3/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE